From 30fa23f627fb1299a6fae9a91242a519a8f845cc Mon Sep 17 00:00:00 2001
From: Fernando Martin Garcia Del Angel <martingarciadelangel@me.com>
Date: Mon, 17 Feb 2020 16:35:49 -0600
Subject: [PATCH 1/6] Created and populated Unit Tests for the eight queens
 algorithm

Developed multiple tests for the eight queens algorithm.
---
 .idea/codeStyles/Project.xml        | 116 ++++++++++++
 .idea/eightQueens.iml               |  15 ++
 .idea/libraries/Dart_Packages.xml   | 284 ++++++++++++++++++++++++++++
 .idea/libraries/Dart_SDK.xml        |  29 +++
 .idea/libraries/Flutter_Plugins.xml |   7 -
 .idea/modules.xml                   |   8 +
 .idea/vcs.xml                       |   6 +
 .idea/workspace.xml                 | 208 ++++++++++++++------
 eight_queens/lib/queens.dart        |  14 +-
 eight_queens/test/eight_test.dart   |  66 +++++++
 eight_queens/test/widget_test.dart  |  32 ++--
 11 files changed, 702 insertions(+), 83 deletions(-)
 create mode 100644 .idea/codeStyles/Project.xml
 create mode 100644 .idea/eightQueens.iml
 create mode 100644 .idea/libraries/Dart_Packages.xml
 create mode 100644 .idea/libraries/Dart_SDK.xml
 delete mode 100644 .idea/libraries/Flutter_Plugins.xml
 create mode 100644 .idea/modules.xml
 create mode 100644 .idea/vcs.xml
 create mode 100644 eight_queens/test/eight_test.dart

diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
new file mode 100644
index 0000000..681f41a
--- /dev/null
+++ b/.idea/codeStyles/Project.xml
@@ -0,0 +1,116 @@
+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <codeStyleSettings language="XML">
+      <indentOptions>
+        <option name="CONTINUATION_INDENT_SIZE" value="4" />
+      </indentOptions>
+      <arrangement>
+        <rules>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>xmlns:android</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>xmlns:.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*:id</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*:name</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>name</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>style</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>ANDROID_ATTRIBUTE_ORDER</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>.*</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+        </rules>
+      </arrangement>
+    </codeStyleSettings>
+  </code_scheme>
+</component>
\ No newline at end of file
diff --git a/.idea/eightQueens.iml b/.idea/eightQueens.iml
new file mode 100644
index 0000000..de9fce8
--- /dev/null
+++ b/.idea/eightQueens.iml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <excludeFolder url="file://$MODULE_DIR$/eight_queens/.dart_tool" />
+      <excludeFolder url="file://$MODULE_DIR$/eight_queens/.pub" />
+      <excludeFolder url="file://$MODULE_DIR$/eight_queens/build" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="Dart SDK" level="project" />
+    <orderEntry type="library" name="Dart Packages" level="project" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/libraries/Dart_Packages.xml b/.idea/libraries/Dart_Packages.xml
new file mode 100644
index 0000000..dde9ac4
--- /dev/null
+++ b/.idea/libraries/Dart_Packages.xml
@@ -0,0 +1,284 @@
+<component name="libraryTable">
+  <library name="Dart Packages" type="DartPackagesLibraryType">
+    <properties>
+      <option name="packageNameToDirsMap">
+        <entry key="archive">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/archive-2.0.11/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="args">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/args-1.5.2/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="async">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/async-2.4.0/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="boolean_selector">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/boolean_selector-1.0.5/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="charcode">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/charcode-1.1.2/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="collection">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/collection-1.14.11/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="convert">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/convert-2.1.1/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="crypto">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/crypto-2.1.3/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="cupertino_icons">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/cupertino_icons-0.1.3/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="flutter">
+          <value>
+            <list>
+              <option value="$USER_HOME$/flutter/packages/flutter/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="flutter_test">
+          <value>
+            <list>
+              <option value="$USER_HOME$/flutter/packages/flutter_test/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="flutter_web_plugins">
+          <value>
+            <list>
+              <option value="$USER_HOME$/flutter/packages/flutter_web_plugins/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="image">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/image-2.1.4/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="matcher">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/matcher-0.12.6/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="meta">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/meta-1.1.8/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="path">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/path-1.6.4/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="pedantic">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/pedantic-1.8.0+1/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="petitparser">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/petitparser-2.4.0/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="progress_dialog">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/progress_dialog-1.2.1/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="quiver">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/quiver-2.0.5/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="shared_preferences">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/shared_preferences-0.5.6+1/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="shared_preferences_macos">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/shared_preferences_macos-0.0.1+5/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="shared_preferences_platform_interface">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/shared_preferences_platform_interface-1.0.1/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="shared_preferences_web">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/shared_preferences_web-0.1.2+3/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="sky_engine">
+          <value>
+            <list>
+              <option value="$USER_HOME$/flutter/bin/cache/pkg/sky_engine/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="source_span">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/source_span-1.5.5/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="stack_trace">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/stack_trace-1.9.3/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="stream_channel">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/stream_channel-2.0.0/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="string_scanner">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/string_scanner-1.0.5/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="term_glyph">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/term_glyph-1.1.0/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="test_api">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/test_api-0.2.11/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="typed_data">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/typed_data-1.1.6/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="vector_math">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/vector_math-2.0.8/lib" />
+            </list>
+          </value>
+        </entry>
+        <entry key="xml">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/xml-3.5.0/lib" />
+            </list>
+          </value>
+        </entry>
+      </option>
+    </properties>
+    <CLASSES>
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/archive-2.0.11/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/args-1.5.2/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/async-2.4.0/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/boolean_selector-1.0.5/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/charcode-1.1.2/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/collection-1.14.11/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/convert-2.1.1/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/crypto-2.1.3/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/cupertino_icons-0.1.3/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/image-2.1.4/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/matcher-0.12.6/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/meta-1.1.8/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/path-1.6.4/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/pedantic-1.8.0+1/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/petitparser-2.4.0/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/progress_dialog-1.2.1/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/quiver-2.0.5/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/shared_preferences-0.5.6+1/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/shared_preferences_macos-0.0.1+5/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/shared_preferences_platform_interface-1.0.1/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/shared_preferences_web-0.1.2+3/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/source_span-1.5.5/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/stack_trace-1.9.3/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/stream_channel-2.0.0/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/string_scanner-1.0.5/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/term_glyph-1.1.0/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/test_api-0.2.11/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/typed_data-1.1.6/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/vector_math-2.0.8/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/xml-3.5.0/lib" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/pkg/sky_engine/lib" />
+      <root url="file://$USER_HOME$/flutter/packages/flutter/lib" />
+      <root url="file://$USER_HOME$/flutter/packages/flutter_test/lib" />
+      <root url="file://$USER_HOME$/flutter/packages/flutter_web_plugins/lib" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES />
+  </library>
+</component>
\ No newline at end of file
diff --git a/.idea/libraries/Dart_SDK.xml b/.idea/libraries/Dart_SDK.xml
new file mode 100644
index 0000000..d802ea4
--- /dev/null
+++ b/.idea/libraries/Dart_SDK.xml
@@ -0,0 +1,29 @@
+<component name="libraryTable">
+  <library name="Dart SDK">
+    <CLASSES>
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/async" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/cli" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/collection" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/convert" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/core" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/developer" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/ffi" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/html" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/indexed_db" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/io" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/isolate" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/js" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/js_util" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/math" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/mirrors" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/svg" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/typed_data" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/wasm" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/web_audio" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/web_gl" />
+      <root url="file://$USER_HOME$/flutter/bin/cache/dart-sdk/lib/web_sql" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES />
+  </library>
+</component>
\ No newline at end of file
diff --git a/.idea/libraries/Flutter_Plugins.xml b/.idea/libraries/Flutter_Plugins.xml
deleted file mode 100644
index b0f6971..0000000
--- a/.idea/libraries/Flutter_Plugins.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<component name="libraryTable">
-  <library name="Flutter Plugins" type="FlutterPluginsLibraryType">
-    <CLASSES />
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..925731d
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/eightQueens.iml" filepath="$PROJECT_DIR$/.idea/eightQueens.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 22ffca4..cadd1a8 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -2,9 +2,11 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="a23023fe-943e-49fb-aaac-72229e9d9f43" name="Default Changelist" comment="">
+      <change afterPath="$PROJECT_DIR$/eight_queens/test/eight_test.dart" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/libraries/Flutter_Plugins.xml" beforeDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/eight_queens/lib/main.dart" beforeDir="false" afterPath="$PROJECT_DIR$/eight_queens/lib/main.dart" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/eight_queens/lib/results.dart" beforeDir="false" afterPath="$PROJECT_DIR$/eight_queens/lib/results.dart" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/eight_queens/lib/queens.dart" beforeDir="false" afterPath="$PROJECT_DIR$/eight_queens/lib/queens.dart" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/eight_queens/test/widget_test.dart" beforeDir="false" afterPath="$PROJECT_DIR$/eight_queens/test/widget_test.dart" afterDir="false" />
     </list>
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
@@ -13,8 +15,7 @@
     <option name="LAST_RESOLUTION" value="IGNORE" />
   </component>
   <component name="DefaultGradleProjectSettings">
-    <option name="testRunner" value="GRADLE" />
-    <option name="delegatedBuild" value="true" />
+    <option name="isMigrated" value="true" />
   </component>
   <component name="ExecutionTargetManager" SELECTED_TARGET="Nexus_5X_API_29_x86" />
   <component name="FileEditorManager">
@@ -22,7 +23,7 @@
       <file pinned="false" current-in-tab="false">
         <entry file="file://$USER_HOME$/flutter/packages/flutter/lib/src/widgets/framework.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="880">
+            <state relative-caret-position="572">
               <caret line="1047" column="11" selection-start-line="1047" selection-start-column="11" selection-end-line="1047" selection-end-column="11" />
             </state>
           </provider>
@@ -31,10 +32,23 @@
       <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/eight_queens/test/widget_test.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="150">
-              <caret line="10" column="17" selection-start-line="10" selection-start-column="17" selection-end-line="10" selection-end-column="17" />
+            <state relative-caret-position="90">
+              <caret line="6" lean-forward="true" selection-start-line="6" selection-end-line="9" />
               <folding>
                 <element signature="e#0#1051#0" expanded="true" />
+                <element signature="e#357#396#0" expanded="true" />
+              </folding>
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file pinned="false" current-in-tab="true">
+        <entry file="file://$PROJECT_DIR$/eight_queens/test/eight_test.dart">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="467">
+              <caret line="62" column="7" selection-start-line="62" selection-start-column="7" selection-end-line="62" selection-end-column="7" />
+              <folding>
+                <element signature="e#1#43#0" expanded="true" />
               </folding>
             </state>
           </provider>
@@ -43,29 +57,26 @@
       <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/eight_queens/lib/main.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="276">
-              <caret line="68" column="17" lean-forward="true" selection-start-line="68" selection-start-column="17" selection-end-line="68" selection-end-column="17" />
+            <state relative-caret-position="-20">
+              <caret line="68" column="17" selection-start-line="68" selection-start-column="17" selection-end-line="68" selection-end-column="17" />
             </state>
           </provider>
         </entry>
       </file>
-      <file pinned="false" current-in-tab="true">
-        <entry file="file://$PROJECT_DIR$/eight_queens/lib/results.dart">
+      <file pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/eight_queens/lib/queens.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="-44">
-              <caret line="23" column="25" lean-forward="true" selection-start-line="23" selection-start-column="25" selection-end-line="23" selection-end-column="25" />
+            <state relative-caret-position="122">
+              <caret line="58" column="5" lean-forward="true" selection-start-line="58" selection-start-column="5" selection-end-line="58" selection-end-column="5" />
             </state>
           </provider>
         </entry>
       </file>
       <file pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/eight_queens/lib/queens.dart">
+        <entry file="file://$PROJECT_DIR$/eight_queens/lib/results.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="350">
-              <caret line="75" column="22" selection-start-line="75" selection-start-column="22" selection-end-line="75" selection-end-column="22" />
-              <folding>
-                <element signature="e#0#2031#0" expanded="true" />
-              </folding>
+            <state relative-caret-position="370">
+              <caret line="37" column="3" selection-start-line="37" selection-start-column="3" selection-end-line="37" selection-end-column="3" />
             </state>
           </provider>
         </entry>
@@ -84,22 +95,29 @@
     <option name="CHANGED_PATHS">
       <list>
         <option value="$PROJECT_DIR$/.github/workflows/main.yml" />
-        <option value="$PROJECT_DIR$/eight_queens/lib/queens.dart" />
         <option value="$PROJECT_DIR$/eight_queens/lib/main.dart" />
         <option value="$PROJECT_DIR$/eight_queens/lib/results.dart" />
+        <option value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
+        <option value="$PROJECT_DIR$/eight_queens/lib/queens.dart" />
+        <option value="$PROJECT_DIR$/eight_queens/test/eight_test.dart" />
       </list>
     </option>
   </component>
   <component name="ProjectConfigurationFiles">
     <option name="files">
       <list>
-        <option value="$PROJECT_DIR$/.idea/libraries/Flutter_Plugins.xml" />
+        <option value="$PROJECT_DIR$/.idea/eightQueens.iml" />
+        <option value="$PROJECT_DIR$/.idea/vcs.xml" />
+        <option value="$PROJECT_DIR$/.idea/modules.xml" />
+        <option value="$PROJECT_DIR$/.idea/codeStyles/Project.xml" />
+        <option value="$PROJECT_DIR$/.idea/libraries/Dart_SDK.xml" />
+        <option value="$PROJECT_DIR$/.idea/libraries/Dart_Packages.xml" />
       </list>
     </option>
   </component>
   <component name="ProjectFrameBounds" extendedState="6">
     <option name="y" value="23" />
-    <option name="width" value="840" />
+    <option name="width" value="925" />
     <option name="height" value="1027" />
   </component>
   <component name="ProjectView">
@@ -107,7 +125,6 @@
       <foldersAlwaysOnTop value="true" />
     </navigator>
     <panes>
-      <pane id="PackagesPane" />
       <pane id="Scope" />
       <pane id="ProjectPane">
         <subPane>
@@ -137,6 +154,7 @@
           <select />
         </subPane>
       </pane>
+      <pane id="PackagesPane" />
     </panes>
   </component>
   <component name="PropertiesComponent">
@@ -158,14 +176,39 @@
       </list>
     </option>
   </component>
-  <component name="RunManager">
-    <configuration name="main.dart" type="FlutterRunConfigurationType" factoryName="Flutter" temporary="true" nameIsGenerated="true">
-      <option name="filePath" value="$PROJECT_DIR$/eight_queens/lib/main.dart" />
+  <component name="RunManager" selected="Flutter Test.passing a complete board to the solver method returns false">
+    <configuration name="passing a complete board to the solver method returns false" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
+      <option name="testName" value="passing a complete board to the solver method returns false" />
+      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/eight_test.dart" />
+      <method v="2" />
+    </configuration>
+    <configuration name="passing a complete board to the solver method returns true" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
+      <option name="testName" value="passing a complete board to the solver method returns true" />
+      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/eight_test.dart" />
+      <method v="2" />
+    </configuration>
+    <configuration name="placing a queen in direct diagonal to another is not a safe move" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
+      <option name="testName" value="placing a queen in direct diagonal to another is not a safe move" />
+      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/eight_test.dart" />
+      <method v="2" />
+    </configuration>
+    <configuration name="placing a queen on an empty place is a safe move" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
+      <option name="testName" value="placing a queen on an empty place is a safe move" />
+      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/eight_test.dart" />
+      <method v="2" />
+    </configuration>
+    <configuration name="placing a queen right next to another is not a safe move" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
+      <option name="testName" value="placing a queen right next to another is not a safe move" />
+      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/eight_test.dart" />
       <method v="2" />
     </configuration>
     <recent_temporary>
       <list>
-        <item itemvalue="Flutter.main.dart" />
+        <item itemvalue="Flutter Test.passing a complete board to the solver method returns false" />
+        <item itemvalue="Flutter Test.passing a complete board to the solver method returns true" />
+        <item itemvalue="Flutter Test.placing a queen in direct diagonal to another is not a safe move" />
+        <item itemvalue="Flutter Test.placing a queen right next to another is not a safe move" />
+        <item itemvalue="Flutter Test.placing a queen on an empty place is a safe move" />
       </list>
     </recent_temporary>
   </component>
@@ -182,6 +225,38 @@
     </task>
     <servers />
   </component>
+  <component name="TestHistory">
+    <history-entry file="placing_a_queen_right_next_to_another_is_not_a_safe_move - 2020.02.17 at 16h 24m 58s.xml">
+      <configuration name="placing a queen right next to another is not a safe move" configurationId="FlutterTestConfigType" />
+    </history-entry>
+    <history-entry file="placing_a_queen_right_next_to_another_is_not_a_safe_move - 2020.02.17 at 16h 25m 23s.xml">
+      <configuration name="placing a queen right next to another is not a safe move" configurationId="FlutterTestConfigType" />
+    </history-entry>
+    <history-entry file="placing_a_queen_right_next_to_another_is_not_a_safe_move - 2020.02.17 at 16h 25m 46s.xml">
+      <configuration name="placing a queen right next to another is not a safe move" configurationId="FlutterTestConfigType" />
+    </history-entry>
+    <history-entry file="placing_a_queen_right_next_to_another_is_not_a_safe_move - 2020.02.17 at 16h 25m 57s.xml">
+      <configuration name="placing a queen right next to another is not a safe move" configurationId="FlutterTestConfigType" />
+    </history-entry>
+    <history-entry file="placing_a_queen_right_next_to_another_is_not_a_safe_move - 2020.02.17 at 16h 26m 26s.xml">
+      <configuration name="placing a queen right next to another is not a safe move" configurationId="FlutterTestConfigType" />
+    </history-entry>
+    <history-entry file="placing_a_queen_right_next_to_another_is_not_a_safe_move - 2020.02.17 at 16h 26m 34s.xml">
+      <configuration name="placing a queen right next to another is not a safe move" configurationId="FlutterTestConfigType" />
+    </history-entry>
+    <history-entry file="placing_a_queen_in_direct_diagonal_to_another_is_not_a_safe_move - 2020.02.17 at 16h 27m 17s.xml">
+      <configuration name="placing a queen in direct diagonal to another is not a safe move" configurationId="FlutterTestConfigType" />
+    </history-entry>
+    <history-entry file="passing_a_complete_board_to_the_solver_method_returns_true - 2020.02.17 at 16h 31m 22s.xml">
+      <configuration name="passing a complete board to the solver method returns true" configurationId="FlutterTestConfigType" />
+    </history-entry>
+    <history-entry file="passing_a_complete_board_to_the_solver_method_returns_true - 2020.02.17 at 16h 31m 32s.xml">
+      <configuration name="passing a complete board to the solver method returns true" configurationId="FlutterTestConfigType" />
+    </history-entry>
+    <history-entry file="passing_a_complete_board_to_the_solver_method_returns_false - 2020.02.17 at 16h 32m 08s.xml">
+      <configuration name="passing a complete board to the solver method returns false" configurationId="FlutterTestConfigType" />
+    </history-entry>
+  </component>
   <component name="TodoView">
     <todo-panel id="selected-file">
       <is-autoscroll-to-source value="true" />
@@ -197,21 +272,21 @@
     <layout>
       <window_info id="Captures" order="0" weight="0.25" />
       <window_info id="Capture Tool" order="1" />
-      <window_info active="true" content_ui="combo" id="Project" order="2" visible="true" weight="0.2875458" />
+      <window_info content_ui="combo" id="Project" order="2" weight="0.18681319" />
       <window_info id="Structure" order="3" side_tool="true" />
       <window_info id="Image Layers" order="4" />
       <window_info id="Designer" order="5" />
       <window_info id="Resources Explorer" order="6" />
       <window_info id="Favorites" order="7" side_tool="true" />
-      <window_info anchor="bottom" id="Find" />
       <window_info anchor="bottom" id="Dart Analysis" order="0" weight="0.32941177" />
       <window_info anchor="bottom" id="TODO" order="1" weight="0.32941177" />
-      <window_info anchor="bottom" id="Run" order="2" weight="0.32941177" />
+      <window_info active="true" anchor="bottom" id="Run" order="2" visible="true" weight="0.32941177" />
       <window_info anchor="bottom" id="Debug" order="3" />
       <window_info anchor="bottom" id="Terminal" order="4" weight="0.32941177" />
       <window_info anchor="bottom" id="Event Log" order="5" side_tool="true" />
       <window_info anchor="bottom" id="Version Control" order="6" weight="0.32941177" />
       <window_info anchor="bottom" id="Messages" order="7" visible="true" weight="0.32941177" />
+      <window_info anchor="bottom" id="Find" order="8" />
       <window_info anchor="right" id="Capture Analysis" order="0" />
       <window_info anchor="right" id="Theme Preview" order="1" />
       <window_info anchor="right" id="Flutter Inspector" order="2" />
@@ -219,56 +294,83 @@
       <window_info anchor="right" id="Palette&#9;" order="4" />
       <window_info anchor="right" id="Flutter Performance" order="5" />
     </layout>
+    <layout-to-restore>
+      <window_info id="Captures" order="0" weight="0.25" />
+      <window_info id="Capture Tool" order="1" />
+      <window_info content_ui="combo" id="Project" order="2" visible="true" weight="0.18681319" />
+      <window_info id="Structure" order="3" side_tool="true" />
+      <window_info id="Image Layers" order="4" />
+      <window_info id="Designer" order="5" />
+      <window_info id="Resources Explorer" order="6" />
+      <window_info id="Favorites" order="7" side_tool="true" />
+      <window_info anchor="bottom" id="Dart Analysis" order="0" weight="0.32941177" />
+      <window_info anchor="bottom" id="TODO" order="1" weight="0.32941177" />
+      <window_info active="true" anchor="bottom" id="Run" order="2" visible="true" weight="0.32941177" />
+      <window_info anchor="bottom" id="Debug" order="3" />
+      <window_info anchor="bottom" id="Terminal" order="4" weight="0.32941177" />
+      <window_info anchor="bottom" id="Event Log" order="5" side_tool="true" />
+      <window_info anchor="bottom" id="Version Control" order="6" weight="0.32941177" />
+      <window_info anchor="bottom" id="Messages" order="7" visible="true" weight="0.32941177" />
+      <window_info anchor="bottom" id="Find" order="8" />
+      <window_info anchor="right" id="Capture Analysis" order="0" />
+      <window_info anchor="right" id="Theme Preview" order="1" />
+      <window_info anchor="right" id="Flutter Inspector" order="2" />
+      <window_info anchor="right" id="Flutter Outline" order="3" />
+      <window_info anchor="right" id="Palette&#9;" order="4" />
+      <window_info anchor="right" id="Flutter Performance" order="5" />
+    </layout-to-restore>
   </component>
   <component name="editorHistoryManager">
-    <entry file="file://$PROJECT_DIR$/.github/workflows/main.yml">
+    <entry file="file://$PROJECT_DIR$/.github/workflows/main.yml" />
+    <entry file="file://$PROJECT_DIR$/eight_queens/pubspec.yaml">
+      <provider selected="true" editor-type-id="text-editor" />
+    </entry>
+    <entry file="file://$PROJECT_DIR$/eight_queens/lib/results.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="345">
-          <caret line="23" selection-start-line="23" selection-end-line="23" />
+        <state relative-caret-position="370">
+          <caret line="37" column="3" selection-start-line="37" selection-start-column="3" selection-end-line="37" selection-end-column="3" />
         </state>
       </provider>
     </entry>
     <entry file="file://$USER_HOME$/flutter/packages/flutter/lib/src/widgets/framework.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="880">
+        <state relative-caret-position="572">
           <caret line="1047" column="11" selection-start-line="1047" selection-start-column="11" selection-end-line="1047" selection-end-column="11" />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/eight_queens/pubspec.yaml">
-      <provider selected="true" editor-type-id="text-editor" />
-    </entry>
-    <entry file="file://$PROJECT_DIR$/eight_queens/test/widget_test.dart">
+    <entry file="file://$PROJECT_DIR$/eight_queens/lib/main.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="150">
-          <caret line="10" column="17" selection-start-line="10" selection-start-column="17" selection-end-line="10" selection-end-column="17" />
-          <folding>
-            <element signature="e#0#1051#0" expanded="true" />
-          </folding>
+        <state relative-caret-position="-20">
+          <caret line="68" column="17" selection-start-line="68" selection-start-column="17" selection-end-line="68" selection-end-column="17" />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/eight_queens/lib/queens.dart">
+    <entry file="file://$PROJECT_DIR$/eight_queens/test/widget_test.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="350">
-          <caret line="75" column="22" selection-start-line="75" selection-start-column="22" selection-end-line="75" selection-end-column="22" />
+        <state relative-caret-position="90">
+          <caret line="6" lean-forward="true" selection-start-line="6" selection-end-line="9" />
           <folding>
-            <element signature="e#0#2031#0" expanded="true" />
+            <element signature="e#0#1051#0" expanded="true" />
+            <element signature="e#357#396#0" expanded="true" />
           </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/eight_queens/lib/main.dart">
+    <entry file="file://$PROJECT_DIR$/eight_queens/lib/queens.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="276">
-          <caret line="68" column="17" lean-forward="true" selection-start-line="68" selection-start-column="17" selection-end-line="68" selection-end-column="17" />
+        <state relative-caret-position="122">
+          <caret line="58" column="5" lean-forward="true" selection-start-line="58" selection-start-column="5" selection-end-line="58" selection-end-column="5" />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/eight_queens/lib/results.dart">
+    <entry file="file://$PROJECT_DIR$/eight_queens/test/eight_test.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="-44">
-          <caret line="23" column="25" lean-forward="true" selection-start-line="23" selection-start-column="25" selection-end-line="23" selection-end-column="25" />
+        <state relative-caret-position="467">
+          <caret line="62" column="7" selection-start-line="62" selection-start-column="7" selection-end-line="62" selection-end-column="7" />
+          <folding>
+            <element signature="e#1#43#0" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
diff --git a/eight_queens/lib/queens.dart b/eight_queens/lib/queens.dart
index c4ecb15..8eac5a1 100644
--- a/eight_queens/lib/queens.dart
+++ b/eight_queens/lib/queens.dart
@@ -9,7 +9,7 @@ class QueenResolver {
 
   int count = 0;
 
-  Future<bool> _isSafe(board, int row, int col, int n) async {
+  Future<bool> isSafe(board, int row, int col, int n) async {
       // Check row on the left side
       for (var i = 0; i < col; i++) {
         if(board[row][i] == 1 && board[row][i] != null) {
@@ -40,27 +40,27 @@ class QueenResolver {
       return true;
   }
 
-  Future<bool> _solveQueens(board, int col, int n) async {
+  Future<bool> solveQueens(board, int col, int n) async {
 
     if (col >= n) {
       count++;
-      _storeSolution(board).then((value) {
+      storeSolution(board).then((value) {
         return true;
       });
     }
 
     var res = false;
     for(int i = 0; i < n; i++) {
-      if(await _isSafe(board, i, col, n)){
+      if(await isSafe(board, i, col, n)){
         board[i][col] = 1;
-        res = await _solveQueens(board, col + 1, n);
+        res = await solveQueens(board, col + 1, n);
         board[i][col] = 0;
       }
     }
     return res;
   }
   
-  Future _storeSolution(List<List<int>> board) async {
+  Future storeSolution(List<List<int>> board) async {
     for(int i = 0; i < board.length; i++) {
       for(int x = 0; x < board[i].length ; x++) {
         if(board[i][x] == null) {
@@ -77,7 +77,7 @@ class QueenResolver {
     // Create the initial queens board
      List<List<int>> board = new List.generate(n, (_) => new List(n));
 
-    if(await _solveQueens(board,0,n) == false) {
+    if(await solveQueens(board,0,n) == false) {
       return count;
     }
     return count;
diff --git a/eight_queens/test/eight_test.dart b/eight_queens/test/eight_test.dart
new file mode 100644
index 0000000..c95f830
--- /dev/null
+++ b/eight_queens/test/eight_test.dart
@@ -0,0 +1,66 @@
+import 'package:eight_queens/queens.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  group('Eight Queens algorithm', () {
+
+    test('count should be 2 on a 4 piece chessboard', () {
+      Future<int> future = QueenResolver().solve(4);
+      expect(future,completion(equals(2)));
+    });
+
+    test('count should be 92 on a 8 piece chessboard', () {
+      Future<int> future = QueenResolver().solve(8);
+      expect(future,completion(equals(92)));
+    });
+
+    test('placing a queen on the same place as another is not a safe move', () {
+      List<List<int>> board = [[1,0,0,0],
+                               [0,0,0,0],
+                               [0,0,0,0],
+                               [0,0,0,0]];
+      Future<bool> future = QueenResolver().isSafe(board, 0, 0, 4);
+      expect(future,completion(equals(false)));
+    });
+
+    test('placing a queen on an empty place is a safe move', () {
+      List<List<int>> board = [[0,0,0,0],
+                               [0,0,0,0],
+                               [0,0,0,0],
+                               [0,0,0,0]];
+      Future<bool> future = QueenResolver().isSafe(board, 0, 0, 4);
+      expect(future,completion(equals(true)));
+    });
+
+    test('placing a queen right next to another is not a safe move', () {
+      List<List<int>> board = [[1,0,0,0],
+                               [0,0,0,0],
+                               [0,0,0,0],
+                               [0,0,0,0]];
+      Future<bool> future = QueenResolver().isSafe(board, 0, 1, 4);
+      expect(future,completion(equals(false)));
+    });
+
+    test('placing a queen in direct diagonal to another is not a safe move', () {
+      List<List<int>> board = [[1,0,0,0],
+                               [0,0,0,0],
+                               [0,0,0,0],
+                               [0,0,0,0]];
+      Future<bool> future = QueenResolver().isSafe(board, 1, 1, 4);
+      expect(future,completion(equals(false)));
+    });
+
+    test('passing a complete board to the solver method returns false', () {
+      List<List<int>> board = [[0,0,1,0],
+                               [1,0,0,0],
+                               [0,0,0,1],
+                               [0,1,0,0]];
+      Future<bool> future = QueenResolver().solveQueens(board, 4, 4);
+      expect(future,completion(equals(false)));
+    });
+
+  });
+}
\ No newline at end of file
diff --git a/eight_queens/test/widget_test.dart b/eight_queens/test/widget_test.dart
index b58f346..f1b9d21 100644
--- a/eight_queens/test/widget_test.dart
+++ b/eight_queens/test/widget_test.dart
@@ -11,20 +11,20 @@ import 'package:flutter_test/flutter_test.dart';
 import 'package:eight_queens/main.dart';
 
 void main() {
-  testWidgets('Counter increments smoke test', (WidgetTester tester) async {
-    // Build our app and trigger a frame.
-    await tester.pumpWidget(MyApp());
-
-    // Verify that our counter starts at 0.
-    expect(find.text('0'), findsOneWidget);
-    expect(find.text('1'), findsNothing);
-
-    // Tap the '+' icon and trigger a frame.
-    await tester.tap(find.byIcon(Icons.add));
-    await tester.pump();
-
-    // Verify that our counter has incremented.
-    expect(find.text('0'), findsNothing);
-    expect(find.text('1'), findsOneWidget);
-  });
+//  testWidgets('Counter increments smoke test', (WidgetTester tester) async {
+//    // Build our app and trigger a frame.
+//    await tester.pumpWidget(MyApp());
+//
+//    // Verify that our counter starts at 0.
+//    expect(find.text('0'), findsOneWidget);
+//    expect(find.text('1'), findsNothing);
+//
+//    // Tap the '+' icon and trigger a frame.
+//    await tester.tap(find.byIcon(Icons.add));
+//    await tester.pump();
+//
+//    // Verify that our counter has incremented.
+//    expect(find.text('0'), findsNothing);
+//    expect(find.text('1'), findsOneWidget);
+//  });
 }

From 59198620a8d26ea47329158851bff4d86eed1a71 Mon Sep 17 00:00:00 2001
From: Fernando Martin Garcia Del Angel <martingarciadelangel@me.com>
Date: Mon, 17 Feb 2020 16:52:38 -0600
Subject: [PATCH 2/6] Created widget testing with the built-in tool

Finalized Testing
---
 .idea/workspace.xml                | 152 ++++++++++++++---------------
 eight_queens/test/widget_test.dart |  81 ++++++++++++---
 2 files changed, 139 insertions(+), 94 deletions(-)

diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index cadd1a8..a7add08 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -2,10 +2,6 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="a23023fe-943e-49fb-aaac-72229e9d9f43" name="Default Changelist" comment="">
-      <change afterPath="$PROJECT_DIR$/eight_queens/test/eight_test.dart" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Flutter_Plugins.xml" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/eight_queens/lib/queens.dart" beforeDir="false" afterPath="$PROJECT_DIR$/eight_queens/lib/queens.dart" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/eight_queens/test/widget_test.dart" beforeDir="false" afterPath="$PROJECT_DIR$/eight_queens/test/widget_test.dart" afterDir="false" />
     </list>
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
@@ -29,24 +25,24 @@
           </provider>
         </entry>
       </file>
-      <file pinned="false" current-in-tab="false">
+      <file pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/eight_queens/test/widget_test.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="90">
-              <caret line="6" lean-forward="true" selection-start-line="6" selection-end-line="9" />
+            <state relative-caret-position="345">
+              <caret line="65" lean-forward="true" selection-start-line="65" selection-end-line="65" />
               <folding>
                 <element signature="e#0#1051#0" expanded="true" />
-                <element signature="e#357#396#0" expanded="true" />
+                <element signature="e#357#400#0" expanded="true" />
               </folding>
             </state>
           </provider>
         </entry>
       </file>
-      <file pinned="false" current-in-tab="true">
+      <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/eight_queens/test/eight_test.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="467">
-              <caret line="62" column="7" selection-start-line="62" selection-start-column="7" selection-end-line="62" selection-end-column="7" />
+            <state relative-caret-position="405">
+              <caret line="27" lean-forward="true" selection-start-line="27" selection-end-line="27" />
               <folding>
                 <element signature="e#1#43#0" expanded="true" />
               </folding>
@@ -57,8 +53,8 @@
       <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/eight_queens/lib/main.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="-20">
-              <caret line="68" column="17" selection-start-line="68" selection-start-column="17" selection-end-line="68" selection-end-column="17" />
+            <state relative-caret-position="-1024">
+              <caret line="48" column="55" lean-forward="true" selection-start-line="48" selection-start-column="55" selection-end-line="48" selection-end-column="55" />
             </state>
           </provider>
         </entry>
@@ -66,8 +62,8 @@
       <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/eight_queens/lib/queens.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="122">
-              <caret line="58" column="5" lean-forward="true" selection-start-line="58" selection-start-column="5" selection-end-line="58" selection-end-column="5" />
+            <state relative-caret-position="272">
+              <caret line="68" column="7" lean-forward="true" selection-start-line="68" selection-start-column="7" selection-end-line="68" selection-end-column="7" />
             </state>
           </provider>
         </entry>
@@ -97,9 +93,9 @@
         <option value="$PROJECT_DIR$/.github/workflows/main.yml" />
         <option value="$PROJECT_DIR$/eight_queens/lib/main.dart" />
         <option value="$PROJECT_DIR$/eight_queens/lib/results.dart" />
-        <option value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
         <option value="$PROJECT_DIR$/eight_queens/lib/queens.dart" />
         <option value="$PROJECT_DIR$/eight_queens/test/eight_test.dart" />
+        <option value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
       </list>
     </option>
   </component>
@@ -115,9 +111,9 @@
       </list>
     </option>
   </component>
-  <component name="ProjectFrameBounds" extendedState="6">
+  <component name="ProjectFrameBounds">
     <option name="y" value="23" />
-    <option name="width" value="925" />
+    <option name="width" value="1047" />
     <option name="height" value="1027" />
   </component>
   <component name="ProjectView">
@@ -176,39 +172,39 @@
       </list>
     </option>
   </component>
-  <component name="RunManager" selected="Flutter Test.passing a complete board to the solver method returns false">
-    <configuration name="passing a complete board to the solver method returns false" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
-      <option name="testName" value="passing a complete board to the solver method returns false" />
-      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/eight_test.dart" />
+  <component name="RunManager" selected="Flutter Test.App with invalid input wont show results widget">
+    <configuration name="App pushes a new view with results" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
+      <option name="testName" value="App pushes a new view with results" />
+      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
       <method v="2" />
     </configuration>
-    <configuration name="passing a complete board to the solver method returns true" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
-      <option name="testName" value="passing a complete board to the solver method returns true" />
-      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/eight_test.dart" />
+    <configuration name="App with invalid input wont show results widget" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
+      <option name="testName" value="App with invalid input wont show results widget" />
+      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
       <method v="2" />
     </configuration>
-    <configuration name="placing a queen in direct diagonal to another is not a safe move" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
-      <option name="testName" value="placing a queen in direct diagonal to another is not a safe move" />
-      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/eight_test.dart" />
+    <configuration name="Main Application tests" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
+      <option name="testName" value="Main Application tests" />
+      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
       <method v="2" />
     </configuration>
-    <configuration name="placing a queen on an empty place is a safe move" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
-      <option name="testName" value="placing a queen on an empty place is a safe move" />
-      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/eight_test.dart" />
+    <configuration name="My App has an usable textfield" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
+      <option name="testName" value="My App has an usable textfield" />
+      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
       <method v="2" />
     </configuration>
-    <configuration name="placing a queen right next to another is not a safe move" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
-      <option name="testName" value="placing a queen right next to another is not a safe move" />
-      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/eight_test.dart" />
+    <configuration name="My App has the desired message" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
+      <option name="testName" value="My App has the desired message" />
+      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
       <method v="2" />
     </configuration>
     <recent_temporary>
       <list>
-        <item itemvalue="Flutter Test.passing a complete board to the solver method returns false" />
-        <item itemvalue="Flutter Test.passing a complete board to the solver method returns true" />
-        <item itemvalue="Flutter Test.placing a queen in direct diagonal to another is not a safe move" />
-        <item itemvalue="Flutter Test.placing a queen right next to another is not a safe move" />
-        <item itemvalue="Flutter Test.placing a queen on an empty place is a safe move" />
+        <item itemvalue="Flutter Test.App with invalid input wont show results widget" />
+        <item itemvalue="Flutter Test.App pushes a new view with results" />
+        <item itemvalue="Flutter Test.My App has an usable textfield" />
+        <item itemvalue="Flutter Test.My App has the desired message" />
+        <item itemvalue="Flutter Test.Main Application tests" />
       </list>
     </recent_temporary>
   </component>
@@ -226,35 +222,35 @@
     <servers />
   </component>
   <component name="TestHistory">
-    <history-entry file="placing_a_queen_right_next_to_another_is_not_a_safe_move - 2020.02.17 at 16h 24m 58s.xml">
-      <configuration name="placing a queen right next to another is not a safe move" configurationId="FlutterTestConfigType" />
+    <history-entry file="passing_a_complete_board_to_the_solver_method_returns_false - 2020.02.17 at 16h 34m 46s.xml">
+      <configuration name="passing a complete board to the solver method returns false" configurationId="FlutterTestConfigType" />
     </history-entry>
-    <history-entry file="placing_a_queen_right_next_to_another_is_not_a_safe_move - 2020.02.17 at 16h 25m 23s.xml">
-      <configuration name="placing a queen right next to another is not a safe move" configurationId="FlutterTestConfigType" />
+    <history-entry file="passing_a_complete_board_to_the_solver_method_returns_false - 2020.02.17 at 16h 34m 50s.xml">
+      <configuration name="passing a complete board to the solver method returns false" configurationId="FlutterTestConfigType" />
     </history-entry>
-    <history-entry file="placing_a_queen_right_next_to_another_is_not_a_safe_move - 2020.02.17 at 16h 25m 46s.xml">
-      <configuration name="placing a queen right next to another is not a safe move" configurationId="FlutterTestConfigType" />
+    <history-entry file="My_App_has_a_title - 2020.02.17 at 16h 40m 38s.xml">
+      <configuration name="My App has a title" configurationId="FlutterTestConfigType" />
     </history-entry>
-    <history-entry file="placing_a_queen_right_next_to_another_is_not_a_safe_move - 2020.02.17 at 16h 25m 57s.xml">
-      <configuration name="placing a queen right next to another is not a safe move" configurationId="FlutterTestConfigType" />
+    <history-entry file="Main_Application_tests - 2020.02.17 at 16h 41m 31s.xml">
+      <configuration name="Main Application tests" configurationId="FlutterTestConfigType" />
     </history-entry>
-    <history-entry file="placing_a_queen_right_next_to_another_is_not_a_safe_move - 2020.02.17 at 16h 26m 26s.xml">
-      <configuration name="placing a queen right next to another is not a safe move" configurationId="FlutterTestConfigType" />
+    <history-entry file="Main_Application_tests - 2020.02.17 at 16h 41m 42s.xml">
+      <configuration name="Main Application tests" configurationId="FlutterTestConfigType" />
     </history-entry>
-    <history-entry file="placing_a_queen_right_next_to_another_is_not_a_safe_move - 2020.02.17 at 16h 26m 34s.xml">
-      <configuration name="placing a queen right next to another is not a safe move" configurationId="FlutterTestConfigType" />
+    <history-entry file="My_App_has_the_desired_message - 2020.02.17 at 16h 42m 49s.xml">
+      <configuration name="My App has the desired message" configurationId="FlutterTestConfigType" />
     </history-entry>
-    <history-entry file="placing_a_queen_in_direct_diagonal_to_another_is_not_a_safe_move - 2020.02.17 at 16h 27m 17s.xml">
-      <configuration name="placing a queen in direct diagonal to another is not a safe move" configurationId="FlutterTestConfigType" />
+    <history-entry file="My_App_has_an_usable_textfield - 2020.02.17 at 16h 45m 12s.xml">
+      <configuration name="My App has an usable textfield" configurationId="FlutterTestConfigType" />
     </history-entry>
-    <history-entry file="passing_a_complete_board_to_the_solver_method_returns_true - 2020.02.17 at 16h 31m 22s.xml">
-      <configuration name="passing a complete board to the solver method returns true" configurationId="FlutterTestConfigType" />
+    <history-entry file="My_App_has_an_usable_textfield - 2020.02.17 at 16h 46m 03s.xml">
+      <configuration name="My App has an usable textfield" configurationId="FlutterTestConfigType" />
     </history-entry>
-    <history-entry file="passing_a_complete_board_to_the_solver_method_returns_true - 2020.02.17 at 16h 31m 32s.xml">
-      <configuration name="passing a complete board to the solver method returns true" configurationId="FlutterTestConfigType" />
+    <history-entry file="App_pushes_a_new_view_with_results - 2020.02.17 at 16h 49m 36s.xml">
+      <configuration name="App pushes a new view with results" configurationId="FlutterTestConfigType" />
     </history-entry>
-    <history-entry file="passing_a_complete_board_to_the_solver_method_returns_false - 2020.02.17 at 16h 32m 08s.xml">
-      <configuration name="passing a complete board to the solver method returns false" configurationId="FlutterTestConfigType" />
+    <history-entry file="App_with_invalid_input_wont_show_results_widget - 2020.02.17 at 16h 51m 13s.xml">
+      <configuration name="App with invalid input wont show results widget" configurationId="FlutterTestConfigType" />
     </history-entry>
   </component>
   <component name="TodoView">
@@ -267,12 +263,12 @@
     </todo-panel>
   </component>
   <component name="ToolWindowManager">
-    <frame x="0" y="23" width="1680" height="1027" extended-state="6" />
+    <frame x="0" y="23" width="1047" height="1027" extended-state="0" />
     <editor active="true" />
     <layout>
       <window_info id="Captures" order="0" weight="0.25" />
       <window_info id="Capture Tool" order="1" />
-      <window_info content_ui="combo" id="Project" order="2" weight="0.18681319" />
+      <window_info content_ui="combo" id="Project" order="2" visible="true" weight="0.3044776" />
       <window_info id="Structure" order="3" side_tool="true" />
       <window_info id="Image Layers" order="4" />
       <window_info id="Designer" order="5" />
@@ -339,37 +335,37 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/eight_queens/lib/main.dart">
+    <entry file="file://$PROJECT_DIR$/eight_queens/test/eight_test.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="-20">
-          <caret line="68" column="17" selection-start-line="68" selection-start-column="17" selection-end-line="68" selection-end-column="17" />
+        <state relative-caret-position="405">
+          <caret line="27" lean-forward="true" selection-start-line="27" selection-end-line="27" />
+          <folding>
+            <element signature="e#1#43#0" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/eight_queens/test/widget_test.dart">
+    <entry file="file://$PROJECT_DIR$/eight_queens/lib/queens.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="90">
-          <caret line="6" lean-forward="true" selection-start-line="6" selection-end-line="9" />
-          <folding>
-            <element signature="e#0#1051#0" expanded="true" />
-            <element signature="e#357#396#0" expanded="true" />
-          </folding>
+        <state relative-caret-position="272">
+          <caret line="68" column="7" lean-forward="true" selection-start-line="68" selection-start-column="7" selection-end-line="68" selection-end-column="7" />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/eight_queens/lib/queens.dart">
+    <entry file="file://$PROJECT_DIR$/eight_queens/lib/main.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="122">
-          <caret line="58" column="5" lean-forward="true" selection-start-line="58" selection-start-column="5" selection-end-line="58" selection-end-column="5" />
+        <state relative-caret-position="-1024">
+          <caret line="48" column="55" lean-forward="true" selection-start-line="48" selection-start-column="55" selection-end-line="48" selection-end-column="55" />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/eight_queens/test/eight_test.dart">
+    <entry file="file://$PROJECT_DIR$/eight_queens/test/widget_test.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="467">
-          <caret line="62" column="7" selection-start-line="62" selection-start-column="7" selection-end-line="62" selection-end-column="7" />
+        <state relative-caret-position="345">
+          <caret line="65" lean-forward="true" selection-start-line="65" selection-end-line="65" />
           <folding>
-            <element signature="e#1#43#0" expanded="true" />
+            <element signature="e#0#1051#0" expanded="true" />
+            <element signature="e#357#400#0" expanded="true" />
           </folding>
         </state>
       </provider>
diff --git a/eight_queens/test/widget_test.dart b/eight_queens/test/widget_test.dart
index f1b9d21..ff352f5 100644
--- a/eight_queens/test/widget_test.dart
+++ b/eight_queens/test/widget_test.dart
@@ -5,26 +5,75 @@
 // gestures. You can also use WidgetTester to find child widgets in the widget
 // tree, read text, and verify that the values of widget properties are correct.
 
+import 'package:eight_queens/results.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 
 import 'package:eight_queens/main.dart';
 
 void main() {
-//  testWidgets('Counter increments smoke test', (WidgetTester tester) async {
-//    // Build our app and trigger a frame.
-//    await tester.pumpWidget(MyApp());
-//
-//    // Verify that our counter starts at 0.
-//    expect(find.text('0'), findsOneWidget);
-//    expect(find.text('1'), findsNothing);
-//
-//    // Tap the '+' icon and trigger a frame.
-//    await tester.tap(find.byIcon(Icons.add));
-//    await tester.pump();
-//
-//    // Verify that our counter has incremented.
-//    expect(find.text('0'), findsNothing);
-//    expect(find.text('1'), findsOneWidget);
-//  });
+  group('Main Application tests', () {
+    testWidgets('My App has a title', (WidgetTester tester) async {
+      // Build our app and trigger a frame.
+      await tester.pumpWidget(MyApp());
+
+      // Find the title
+      expect(find.text('Eight Queens App'), findsOneWidget);
+    });
+
+    testWidgets('My App has the desired message', (WidgetTester tester) async {
+      // Build our app and trigger a frame.
+      await tester.pumpWidget(MyApp());
+
+      // Find the title
+      expect(find.text('Select a board size'), findsOneWidget);
+    });
+
+    testWidgets('My App has an usable textfield', (WidgetTester tester) async {
+      // Build our app and trigger a frame.
+      await tester.pumpWidget(MyApp());
+
+      // Enter a number into the textfield
+      await tester.enterText(find.byType(TextField), '8');
+
+      //Expect it was stored correctly
+      expect(find.text('8'),findsWidgets);
+    });
+
+    testWidgets('App pushes a new view with results', (WidgetTester tester) async {
+      // Build our app and trigger a frame.
+      await tester.pumpWidget(MyApp());
+
+      // Enter a number into the textfield
+      await tester.enterText(find.byType(TextField), '8');
+
+      //Tap the button to go to the next screen
+      await tester.tap(find.byIcon(Icons.done));
+
+      // Wait for it to be shown
+      await tester.pumpAndSettle();
+
+      //Expect the new page to be shown
+      expect(find.byType(ResultsPage),findsOneWidget);
+    });
+
+    testWidgets('App with invalid input wont show results widget', (WidgetTester tester) async {
+      // Build our app and trigger a frame.
+      await tester.pumpWidget(MyApp());
+
+      // Enter a number into the textfield
+      await tester.enterText(find.byType(TextField), '0');
+
+      //Tap the button to go to the next screen
+      await tester.tap(find.byIcon(Icons.done));
+
+      // Wait for it to be shown
+      await tester.pumpAndSettle();
+
+      //Expect the new page to be shown
+      expect(find.byType(ResultsPage),findsNothing);
+    });
+
+
+  });
 }

From 490ef90b32cdea473aa7f8c4757c13daa3b17748 Mon Sep 17 00:00:00 2001
From: Fernando Martin Garcia Del Angel <martingarciadelangel@me.com>
Date: Mon, 17 Feb 2020 17:30:14 -0600
Subject: [PATCH 3/6] Added Textfield validation

Validated if Textfield was numeric or not and if it was empty
---
 .idea/libraries/Dart_Packages.xml |  8 +++
 .idea/workspace.xml               | 96 ++++++++++++++++++-------------
 eight_queens/lib/main.dart        | 41 ++++++++++++-
 eight_queens/pubspec.yaml         |  1 +
 4 files changed, 105 insertions(+), 41 deletions(-)

diff --git a/.idea/libraries/Dart_Packages.xml b/.idea/libraries/Dart_Packages.xml
index dde9ac4..8e87c9a 100644
--- a/.idea/libraries/Dart_Packages.xml
+++ b/.idea/libraries/Dart_Packages.xml
@@ -226,6 +226,13 @@
             </list>
           </value>
         </entry>
+        <entry key="validators">
+          <value>
+            <list>
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/validators-2.0.0+1/lib" />
+            </list>
+          </value>
+        </entry>
         <entry key="vector_math">
           <value>
             <list>
@@ -271,6 +278,7 @@
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/term_glyph-1.1.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/test_api-0.2.11/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/typed_data-1.1.6/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/validators-2.0.0+1/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/vector_math-2.0.8/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dartlang.org/xml-3.5.0/lib" />
       <root url="file://$USER_HOME$/flutter/bin/cache/pkg/sky_engine/lib" />
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index a7add08..e50e34e 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -2,7 +2,9 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="a23023fe-943e-49fb-aaac-72229e9d9f43" name="Default Changelist" comment="">
-      <change beforePath="$PROJECT_DIR$/eight_queens/test/widget_test.dart" beforeDir="false" afterPath="$PROJECT_DIR$/eight_queens/test/widget_test.dart" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/eight_queens/lib/main.dart" beforeDir="false" afterPath="$PROJECT_DIR$/eight_queens/lib/main.dart" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/eight_queens/pubspec.yaml" beforeDir="false" afterPath="$PROJECT_DIR$/eight_queens/pubspec.yaml" afterDir="false" />
     </list>
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
@@ -25,11 +27,11 @@
           </provider>
         </entry>
       </file>
-      <file pinned="false" current-in-tab="true">
+      <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/eight_queens/test/widget_test.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="345">
-              <caret line="65" lean-forward="true" selection-start-line="65" selection-end-line="65" />
+            <state relative-caret-position="466">
+              <caret line="73" column="41" selection-start-line="73" selection-start-column="41" selection-end-line="73" selection-end-column="41" />
               <folding>
                 <element signature="e#0#1051#0" expanded="true" />
                 <element signature="e#357#400#0" expanded="true" />
@@ -42,7 +44,7 @@
         <entry file="file://$PROJECT_DIR$/eight_queens/test/eight_test.dart">
           <provider selected="true" editor-type-id="text-editor">
             <state relative-caret-position="405">
-              <caret line="27" lean-forward="true" selection-start-line="27" selection-end-line="27" />
+              <caret line="27" selection-start-line="27" selection-end-line="27" />
               <folding>
                 <element signature="e#1#43#0" expanded="true" />
               </folding>
@@ -50,11 +52,14 @@
           </provider>
         </entry>
       </file>
-      <file pinned="false" current-in-tab="false">
+      <file pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/eight_queens/lib/main.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="-1024">
-              <caret line="48" column="55" lean-forward="true" selection-start-line="48" selection-start-column="55" selection-end-line="48" selection-end-column="55" />
+            <state relative-caret-position="388">
+              <caret line="92" column="43" selection-start-line="92" selection-start-column="43" selection-end-line="92" selection-end-column="43" />
+              <folding>
+                <element signature="e#0#42#0" expanded="true" />
+              </folding>
             </state>
           </provider>
         </entry>
@@ -63,7 +68,7 @@
         <entry file="file://$PROJECT_DIR$/eight_queens/lib/queens.dart">
           <provider selected="true" editor-type-id="text-editor">
             <state relative-caret-position="272">
-              <caret line="68" column="7" lean-forward="true" selection-start-line="68" selection-start-column="7" selection-end-line="68" selection-end-column="7" />
+              <caret line="68" column="7" selection-start-line="68" selection-start-column="7" selection-end-line="68" selection-end-column="7" />
             </state>
           </provider>
         </entry>
@@ -79,7 +84,11 @@
       </file>
       <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/eight_queens/pubspec.yaml">
-          <provider selected="true" editor-type-id="text-editor" />
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="360">
+              <caret line="24" column="19" selection-start-line="24" selection-start-column="19" selection-end-line="24" selection-end-column="19" />
+            </state>
+          </provider>
         </entry>
       </file>
     </leaf>
@@ -91,11 +100,12 @@
     <option name="CHANGED_PATHS">
       <list>
         <option value="$PROJECT_DIR$/.github/workflows/main.yml" />
-        <option value="$PROJECT_DIR$/eight_queens/lib/main.dart" />
         <option value="$PROJECT_DIR$/eight_queens/lib/results.dart" />
         <option value="$PROJECT_DIR$/eight_queens/lib/queens.dart" />
         <option value="$PROJECT_DIR$/eight_queens/test/eight_test.dart" />
         <option value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
+        <option value="$PROJECT_DIR$/eight_queens/pubspec.yaml" />
+        <option value="$PROJECT_DIR$/eight_queens/lib/main.dart" />
       </list>
     </option>
   </component>
@@ -111,9 +121,9 @@
       </list>
     </option>
   </component>
-  <component name="ProjectFrameBounds">
+  <component name="ProjectFrameBounds" extendedState="6">
     <option name="y" value="23" />
-    <option name="width" value="1047" />
+    <option name="width" value="840" />
     <option name="height" value="1027" />
   </component>
   <component name="ProjectView">
@@ -172,7 +182,11 @@
       </list>
     </option>
   </component>
-  <component name="RunManager" selected="Flutter Test.App with invalid input wont show results widget">
+  <component name="RunManager" selected="Flutter.main.dart">
+    <configuration name="main.dart" type="FlutterRunConfigurationType" factoryName="Flutter" temporary="true" nameIsGenerated="true">
+      <option name="filePath" value="$PROJECT_DIR$/eight_queens/lib/main.dart" />
+      <method v="2" />
+    </configuration>
     <configuration name="App pushes a new view with results" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
       <option name="testName" value="App pushes a new view with results" />
       <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
@@ -183,11 +197,6 @@
       <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
       <method v="2" />
     </configuration>
-    <configuration name="Main Application tests" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
-      <option name="testName" value="Main Application tests" />
-      <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
-      <method v="2" />
-    </configuration>
     <configuration name="My App has an usable textfield" type="FlutterTestConfigType" factoryName="Flutter Test" temporary="true" nameIsGenerated="true">
       <option name="testName" value="My App has an usable textfield" />
       <option name="testFile" value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
@@ -200,11 +209,11 @@
     </configuration>
     <recent_temporary>
       <list>
+        <item itemvalue="Flutter.main.dart" />
         <item itemvalue="Flutter Test.App with invalid input wont show results widget" />
         <item itemvalue="Flutter Test.App pushes a new view with results" />
         <item itemvalue="Flutter Test.My App has an usable textfield" />
         <item itemvalue="Flutter Test.My App has the desired message" />
-        <item itemvalue="Flutter Test.Main Application tests" />
       </list>
     </recent_temporary>
   </component>
@@ -222,9 +231,6 @@
     <servers />
   </component>
   <component name="TestHistory">
-    <history-entry file="passing_a_complete_board_to_the_solver_method_returns_false - 2020.02.17 at 16h 34m 46s.xml">
-      <configuration name="passing a complete board to the solver method returns false" configurationId="FlutterTestConfigType" />
-    </history-entry>
     <history-entry file="passing_a_complete_board_to_the_solver_method_returns_false - 2020.02.17 at 16h 34m 50s.xml">
       <configuration name="passing a complete board to the solver method returns false" configurationId="FlutterTestConfigType" />
     </history-entry>
@@ -252,6 +258,9 @@
     <history-entry file="App_with_invalid_input_wont_show_results_widget - 2020.02.17 at 16h 51m 13s.xml">
       <configuration name="App with invalid input wont show results widget" configurationId="FlutterTestConfigType" />
     </history-entry>
+    <history-entry file="App_with_invalid_input_wont_show_results_widget - 2020.02.17 at 17h 07m 20s.xml">
+      <configuration name="App with invalid input wont show results widget" configurationId="FlutterTestConfigType" />
+    </history-entry>
   </component>
   <component name="TodoView">
     <todo-panel id="selected-file">
@@ -263,12 +272,12 @@
     </todo-panel>
   </component>
   <component name="ToolWindowManager">
-    <frame x="0" y="23" width="1047" height="1027" extended-state="0" />
+    <frame x="0" y="23" width="1680" height="1027" extended-state="6" />
     <editor active="true" />
     <layout>
       <window_info id="Captures" order="0" weight="0.25" />
       <window_info id="Capture Tool" order="1" />
-      <window_info content_ui="combo" id="Project" order="2" visible="true" weight="0.3044776" />
+      <window_info active="true" content_ui="combo" id="Project" order="2" visible="true" weight="0.18681319" />
       <window_info id="Structure" order="3" side_tool="true" />
       <window_info id="Image Layers" order="4" />
       <window_info id="Designer" order="5" />
@@ -276,8 +285,8 @@
       <window_info id="Favorites" order="7" side_tool="true" />
       <window_info anchor="bottom" id="Dart Analysis" order="0" weight="0.32941177" />
       <window_info anchor="bottom" id="TODO" order="1" weight="0.32941177" />
-      <window_info active="true" anchor="bottom" id="Run" order="2" visible="true" weight="0.32941177" />
-      <window_info anchor="bottom" id="Debug" order="3" />
+      <window_info anchor="bottom" id="Run" order="2" weight="0.32941177" />
+      <window_info anchor="bottom" id="Debug" order="3" weight="0.32941177" />
       <window_info anchor="bottom" id="Terminal" order="4" weight="0.32941177" />
       <window_info anchor="bottom" id="Event Log" order="5" side_tool="true" />
       <window_info anchor="bottom" id="Version Control" order="6" weight="0.32941177" />
@@ -318,9 +327,6 @@
   </component>
   <component name="editorHistoryManager">
     <entry file="file://$PROJECT_DIR$/.github/workflows/main.yml" />
-    <entry file="file://$PROJECT_DIR$/eight_queens/pubspec.yaml">
-      <provider selected="true" editor-type-id="text-editor" />
-    </entry>
     <entry file="file://$PROJECT_DIR$/eight_queens/lib/results.dart">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="370">
@@ -338,7 +344,7 @@
     <entry file="file://$PROJECT_DIR$/eight_queens/test/eight_test.dart">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="405">
-          <caret line="27" lean-forward="true" selection-start-line="27" selection-end-line="27" />
+          <caret line="27" selection-start-line="27" selection-end-line="27" />
           <folding>
             <element signature="e#1#43#0" expanded="true" />
           </folding>
@@ -348,24 +354,34 @@
     <entry file="file://$PROJECT_DIR$/eight_queens/lib/queens.dart">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="272">
-          <caret line="68" column="7" lean-forward="true" selection-start-line="68" selection-start-column="7" selection-end-line="68" selection-end-column="7" />
+          <caret line="68" column="7" selection-start-line="68" selection-start-column="7" selection-end-line="68" selection-end-column="7" />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/eight_queens/lib/main.dart">
+    <entry file="file://$PROJECT_DIR$/eight_queens/test/widget_test.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="-1024">
-          <caret line="48" column="55" lean-forward="true" selection-start-line="48" selection-start-column="55" selection-end-line="48" selection-end-column="55" />
+        <state relative-caret-position="466">
+          <caret line="73" column="41" selection-start-line="73" selection-start-column="41" selection-end-line="73" selection-end-column="41" />
+          <folding>
+            <element signature="e#0#1051#0" expanded="true" />
+            <element signature="e#357#400#0" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/eight_queens/test/widget_test.dart">
+    <entry file="file://$PROJECT_DIR$/eight_queens/pubspec.yaml">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="345">
-          <caret line="65" lean-forward="true" selection-start-line="65" selection-end-line="65" />
+        <state relative-caret-position="360">
+          <caret line="24" column="19" selection-start-line="24" selection-start-column="19" selection-end-line="24" selection-end-column="19" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/eight_queens/lib/main.dart">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="388">
+          <caret line="92" column="43" selection-start-line="92" selection-start-column="43" selection-end-line="92" selection-end-column="43" />
           <folding>
-            <element signature="e#0#1051#0" expanded="true" />
-            <element signature="e#357#400#0" expanded="true" />
+            <element signature="e#0#42#0" expanded="true" />
           </folding>
         </state>
       </provider>
diff --git a/eight_queens/lib/main.dart b/eight_queens/lib/main.dart
index d23f862..83642c0 100644
--- a/eight_queens/lib/main.dart
+++ b/eight_queens/lib/main.dart
@@ -2,7 +2,7 @@ import 'package:eight_queens/queens.dart';
 import 'package:eight_queens/results.dart';
 import 'package:flutter/material.dart';
 import 'package:progress_dialog/progress_dialog.dart';
-
+import 'package:validators/validators.dart';
 
 void main() => runApp(MyApp());
 
@@ -40,6 +40,7 @@ class MyHomePage extends StatefulWidget {
 class _MyHomePageState extends State<MyHomePage> {
   int _boardSize = 0;
   ProgressDialog pr;
+  bool shouldCheck;
 
   // Create a controller to retrieve data from the TextField
   final boardController = TextEditingController();
@@ -51,11 +52,49 @@ class _MyHomePageState extends State<MyHomePage> {
     super.dispose();
   }
 
+  void _showDialogBuilder(String title, String message) {
+    showDialog(context: context,builder: (BuildContext context){
+      return AlertDialog(
+        title: new Text(title),
+        content: new Text(message),
+        actions: <Widget>[
+          new FlatButton(
+              child: new Text("close"), onPressed: () {
+            setState(() {
+              _boardSize = 0;
+            });
+            Navigator.of(context).pop();
+          })
+        ],
+      );
+    });
+  }
+
+  @override
+  void initState() {
+    // TODO: implement initState
+    setState(() {
+      shouldCheck = true;
+    });
+    super.initState();
+  }
+
   /**
    * Retrieve the board number and pass it to the eight queens controller
    * TODO: Create the Responsible class in Dart
    */
   void _startProcessing() async {
+
+    if(boardController.text.isEmpty){
+      _showDialogBuilder("Empty Textfield", "Please enter a value into the text field");
+      return;
+    }
+
+    if(boardController.text.isNotEmpty && !isNumeric(boardController.text)) {
+      _showDialogBuilder("Non numeric", "Please enter a numeric value into the text field");
+      return;
+    }
+    
     setState(() {
       // This call to setState tells the Flutter framework that something has
       // changed in this State, which causes it to rerun the build method below
diff --git a/eight_queens/pubspec.yaml b/eight_queens/pubspec.yaml
index 216c2f7..0366a86 100644
--- a/eight_queens/pubspec.yaml
+++ b/eight_queens/pubspec.yaml
@@ -20,6 +20,7 @@ dependencies:
   flutter:
     sdk: flutter
   shared_preferences : ^0.5.6
+  validators: ^2.0.0
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.

From ee9f2ae0056d0578032877257d9cabae3c65b395 Mon Sep 17 00:00:00 2001
From: Fernando Martin Garcia Del Angel <martingarciadelangel@me.com>
Date: Mon, 17 Feb 2020 18:06:25 -0600
Subject: [PATCH 4/6] Added documentation to main.dart

Added simple comments to improve internal documentation of the app
---
 .idea/workspace.xml        | 10 ++++------
 eight_queens/lib/main.dart | 13 +++++++++----
 2 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index e50e34e..d2f51d5 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -2,9 +2,7 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="a23023fe-943e-49fb-aaac-72229e9d9f43" name="Default Changelist" comment="">
-      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/eight_queens/lib/main.dart" beforeDir="false" afterPath="$PROJECT_DIR$/eight_queens/lib/main.dart" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/eight_queens/pubspec.yaml" beforeDir="false" afterPath="$PROJECT_DIR$/eight_queens/pubspec.yaml" afterDir="false" />
     </list>
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
@@ -55,8 +53,8 @@
       <file pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/eight_queens/lib/main.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="388">
-              <caret line="92" column="43" selection-start-line="92" selection-start-column="43" selection-end-line="92" selection-end-column="43" />
+            <state relative-caret-position="-1132">
+              <caret line="56" column="81" lean-forward="true" selection-start-line="56" selection-start-column="81" selection-end-line="56" selection-end-column="81" />
               <folding>
                 <element signature="e#0#42#0" expanded="true" />
               </folding>
@@ -378,8 +376,8 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/eight_queens/lib/main.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="388">
-          <caret line="92" column="43" selection-start-line="92" selection-start-column="43" selection-end-line="92" selection-end-column="43" />
+        <state relative-caret-position="-1132">
+          <caret line="56" column="81" lean-forward="true" selection-start-line="56" selection-start-column="81" selection-end-line="56" selection-end-column="81" />
           <folding>
             <element signature="e#0#42#0" expanded="true" />
           </folding>
diff --git a/eight_queens/lib/main.dart b/eight_queens/lib/main.dart
index 83642c0..0573db0 100644
--- a/eight_queens/lib/main.dart
+++ b/eight_queens/lib/main.dart
@@ -52,6 +52,10 @@ class _MyHomePageState extends State<MyHomePage> {
     super.dispose();
   }
 
+  ///
+  /// Creates a simple Dialog to show a message
+  /// Receives a [String] title and a [String] message to display a [AlertDialog]
+  ///
   void _showDialogBuilder(String title, String message) {
     showDialog(context: context,builder: (BuildContext context){
       return AlertDialog(
@@ -79,10 +83,11 @@ class _MyHomePageState extends State<MyHomePage> {
     super.initState();
   }
 
-  /**
-   * Retrieve the board number and pass it to the eight queens controller
-   * TODO: Create the Responsible class in Dart
-   */
+  ///
+  /// This method retrieves the [boardController.text] and checks if [isNumeric] and [boardController.text.isEmpty].
+  /// Then, it shows a [ProgressDialog] element while [QueenResolver] is executed.
+  /// Once a [count] is retrieved, we [Navigator.push] to [ResultsPage]
+  ///
   void _startProcessing() async {
 
     if(boardController.text.isEmpty){

From 4d6f95e32e2e3eaae5f38b431ae6fbb8a5f6bc4c Mon Sep 17 00:00:00 2001
From: Fernando Martin Garcia Del Angel <martingarciadelangel@me.com>
Date: Mon, 17 Feb 2020 18:13:52 -0600
Subject: [PATCH 5/6] Added documentation to queens.dart

Documented all methods and steps taken during the algorithms.
---
 .idea/workspace.xml          | 56 ++++++++++++++++++++----------------
 eight_queens/lib/queens.dart | 30 +++++++++++++++----
 2 files changed, 56 insertions(+), 30 deletions(-)

diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index d2f51d5..f0fbb95 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -2,7 +2,7 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="a23023fe-943e-49fb-aaac-72229e9d9f43" name="Default Changelist" comment="">
-      <change beforePath="$PROJECT_DIR$/eight_queens/lib/main.dart" beforeDir="false" afterPath="$PROJECT_DIR$/eight_queens/lib/main.dart" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/eight_queens/lib/queens.dart" beforeDir="false" afterPath="$PROJECT_DIR$/eight_queens/lib/queens.dart" afterDir="false" />
     </list>
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
@@ -50,10 +50,10 @@
           </provider>
         </entry>
       </file>
-      <file pinned="false" current-in-tab="true">
+      <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/eight_queens/lib/main.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="-1132">
+            <state relative-caret-position="-1133">
               <caret line="56" column="81" lean-forward="true" selection-start-line="56" selection-start-column="81" selection-end-line="56" selection-end-column="81" />
               <folding>
                 <element signature="e#0#42#0" expanded="true" />
@@ -62,11 +62,14 @@
           </provider>
         </entry>
       </file>
-      <file pinned="false" current-in-tab="false">
+      <file pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/eight_queens/lib/queens.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="272">
-              <caret line="68" column="7" selection-start-line="68" selection-start-column="7" selection-end-line="68" selection-end-column="7" />
+            <state relative-caret-position="443">
+              <caret line="93" column="48" selection-start-line="93" selection-start-column="48" selection-end-line="93" selection-end-column="48" />
+              <folding>
+                <element signature="e#0#2016#0" expanded="true" />
+              </folding>
             </state>
           </provider>
         </entry>
@@ -99,11 +102,11 @@
       <list>
         <option value="$PROJECT_DIR$/.github/workflows/main.yml" />
         <option value="$PROJECT_DIR$/eight_queens/lib/results.dart" />
-        <option value="$PROJECT_DIR$/eight_queens/lib/queens.dart" />
         <option value="$PROJECT_DIR$/eight_queens/test/eight_test.dart" />
         <option value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
         <option value="$PROJECT_DIR$/eight_queens/pubspec.yaml" />
         <option value="$PROJECT_DIR$/eight_queens/lib/main.dart" />
+        <option value="$PROJECT_DIR$/eight_queens/lib/queens.dart" />
       </list>
     </option>
   </component>
@@ -339,20 +342,30 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/eight_queens/test/eight_test.dart">
+    <entry file="file://$PROJECT_DIR$/eight_queens/pubspec.yaml">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="405">
-          <caret line="27" selection-start-line="27" selection-end-line="27" />
+        <state relative-caret-position="360">
+          <caret line="24" column="19" selection-start-line="24" selection-start-column="19" selection-end-line="24" selection-end-column="19" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/eight_queens/lib/main.dart">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="-1133">
+          <caret line="56" column="81" lean-forward="true" selection-start-line="56" selection-start-column="81" selection-end-line="56" selection-end-column="81" />
           <folding>
-            <element signature="e#1#43#0" expanded="true" />
+            <element signature="e#0#42#0" expanded="true" />
           </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/eight_queens/lib/queens.dart">
+    <entry file="file://$PROJECT_DIR$/eight_queens/test/eight_test.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="272">
-          <caret line="68" column="7" selection-start-line="68" selection-start-column="7" selection-end-line="68" selection-end-column="7" />
+        <state relative-caret-position="405">
+          <caret line="27" selection-start-line="27" selection-end-line="27" />
+          <folding>
+            <element signature="e#1#43#0" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
@@ -367,19 +380,12 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/eight_queens/pubspec.yaml">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="360">
-          <caret line="24" column="19" selection-start-line="24" selection-start-column="19" selection-end-line="24" selection-end-column="19" />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/eight_queens/lib/main.dart">
+    <entry file="file://$PROJECT_DIR$/eight_queens/lib/queens.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="-1132">
-          <caret line="56" column="81" lean-forward="true" selection-start-line="56" selection-start-column="81" selection-end-line="56" selection-end-column="81" />
+        <state relative-caret-position="443">
+          <caret line="93" column="48" selection-start-line="93" selection-start-column="48" selection-end-line="93" selection-end-column="48" />
           <folding>
-            <element signature="e#0#42#0" expanded="true" />
+            <element signature="e#0#2016#0" expanded="true" />
           </folding>
         </state>
       </provider>
diff --git a/eight_queens/lib/queens.dart b/eight_queens/lib/queens.dart
index 8eac5a1..682f8e8 100644
--- a/eight_queens/lib/queens.dart
+++ b/eight_queens/lib/queens.dart
@@ -1,7 +1,8 @@
-/**
- * Queen Resolver class
- * Solved using algorithm found in: https://www.geeksforgeeks.org/n-queen-problem-using-branch-and-bound/
- */
+///
+///Queen Resolver class
+///Solved using algorithm found in: https://www.geeksforgeeks.org/n-queen-problem-backtracking-3/
+///Adapted for use with Dart and Flutter
+///
 
 import 'package:shared_preferences/shared_preferences.dart';
 
@@ -9,6 +10,10 @@ class QueenResolver {
 
   int count = 0;
 
+  ///
+  /// Checks if a queen can be placed on a [board] in a [row] and [col]
+  /// Returns a [bool] if it's safe to place it [true] or not [false]
+  ///
   Future<bool> isSafe(board, int row, int col, int n) async {
       // Check row on the left side
       for (var i = 0; i < col; i++) {
@@ -40,8 +45,15 @@ class QueenResolver {
       return true;
   }
 
+  ///
+  /// Main eight queens algorithm
+  /// Receives a single [board] and [col] positions, as well as [n] queens.
+  /// Will return [true] when solved.
+  ///
   Future<bool> solveQueens(board, int col, int n) async {
 
+    /* Solve for the base case : All queens are placed
+    * Then, store it into local storage */
     if (col >= n) {
       count++;
       storeSolution(board).then((value) {
@@ -50,6 +62,7 @@ class QueenResolver {
     }
 
     var res = false;
+    /** Consider the [col] and try placing it on the [board] **/
     for(int i = 0; i < n; i++) {
       if(await isSafe(board, i, col, n)){
         board[i][col] = 1;
@@ -59,7 +72,10 @@ class QueenResolver {
     }
     return res;
   }
-  
+
+  /// Stores a complete [board] into [SharedPreferences]
+  /// Because the [board] is not completely initialized, it requires to convert all [null] values to [0].
+  /// Stores also the current [count] into [SharedPreferences]
   Future storeSolution(List<List<int>> board) async {
     for(int i = 0; i < board.length; i++) {
       for(int x = 0; x < board[i].length ; x++) {
@@ -73,6 +89,10 @@ class QueenResolver {
     await prefs.setInt('count', count);
   }
 
+  ///
+  /// Function entryway to solve for [n] queens.
+  /// Will return [count] for the app's purposes
+  ///
   Future<int> solve(int n) async {
     // Create the initial queens board
      List<List<int>> board = new List.generate(n, (_) => new List(n));

From e088b36aa42e4317b949f24f72228ca8fc85ca50 Mon Sep 17 00:00:00 2001
From: Fernando Martin Garcia Del Angel <martingarciadelangel@me.com>
Date: Mon, 17 Feb 2020 18:15:54 -0600
Subject: [PATCH 6/6] Added documentation to results.dart

Described all relevant methods
---
 .idea/workspace.xml           | 32 +++++++++++++++++++-------------
 eight_queens/lib/results.dart | 12 +++++++++++-
 2 files changed, 30 insertions(+), 14 deletions(-)

diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index f0fbb95..4da9e8b 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -2,7 +2,7 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="a23023fe-943e-49fb-aaac-72229e9d9f43" name="Default Changelist" comment="">
-      <change beforePath="$PROJECT_DIR$/eight_queens/lib/queens.dart" beforeDir="false" afterPath="$PROJECT_DIR$/eight_queens/lib/queens.dart" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/eight_queens/lib/results.dart" beforeDir="false" afterPath="$PROJECT_DIR$/eight_queens/lib/results.dart" afterDir="false" />
     </list>
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
@@ -62,7 +62,7 @@
           </provider>
         </entry>
       </file>
-      <file pinned="false" current-in-tab="true">
+      <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/eight_queens/lib/queens.dart">
           <provider selected="true" editor-type-id="text-editor">
             <state relative-caret-position="443">
@@ -74,11 +74,14 @@
           </provider>
         </entry>
       </file>
-      <file pinned="false" current-in-tab="false">
+      <file pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/eight_queens/lib/results.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="370">
-              <caret line="37" column="3" selection-start-line="37" selection-start-column="3" selection-end-line="37" selection-end-column="3" />
+            <state relative-caret-position="352">
+              <caret line="47" column="49" selection-start-line="47" selection-start-column="49" selection-end-line="47" selection-end-column="49" />
+              <folding>
+                <element signature="e#1#43#0" expanded="true" />
+              </folding>
             </state>
           </provider>
         </entry>
@@ -101,12 +104,12 @@
     <option name="CHANGED_PATHS">
       <list>
         <option value="$PROJECT_DIR$/.github/workflows/main.yml" />
-        <option value="$PROJECT_DIR$/eight_queens/lib/results.dart" />
         <option value="$PROJECT_DIR$/eight_queens/test/eight_test.dart" />
         <option value="$PROJECT_DIR$/eight_queens/test/widget_test.dart" />
         <option value="$PROJECT_DIR$/eight_queens/pubspec.yaml" />
         <option value="$PROJECT_DIR$/eight_queens/lib/main.dart" />
         <option value="$PROJECT_DIR$/eight_queens/lib/queens.dart" />
+        <option value="$PROJECT_DIR$/eight_queens/lib/results.dart" />
       </list>
     </option>
   </component>
@@ -328,13 +331,6 @@
   </component>
   <component name="editorHistoryManager">
     <entry file="file://$PROJECT_DIR$/.github/workflows/main.yml" />
-    <entry file="file://$PROJECT_DIR$/eight_queens/lib/results.dart">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="370">
-          <caret line="37" column="3" selection-start-line="37" selection-start-column="3" selection-end-line="37" selection-end-column="3" />
-        </state>
-      </provider>
-    </entry>
     <entry file="file://$USER_HOME$/flutter/packages/flutter/lib/src/widgets/framework.dart">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="572">
@@ -390,5 +386,15 @@
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/eight_queens/lib/results.dart">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="352">
+          <caret line="47" column="49" selection-start-line="47" selection-start-column="49" selection-end-line="47" selection-end-column="49" />
+          <folding>
+            <element signature="e#1#43#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
   </component>
 </project>
\ No newline at end of file
diff --git a/eight_queens/lib/results.dart b/eight_queens/lib/results.dart
index 2b606f0..23e0843 100644
--- a/eight_queens/lib/results.dart
+++ b/eight_queens/lib/results.dart
@@ -1,4 +1,5 @@
 
+import 'package:eight_queens/queens.dart';
 import 'package:flutter/material.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'dart:convert';
@@ -15,6 +16,11 @@ class ResultsPage extends StatefulWidget {
 class _ResultsPageState extends State<ResultsPage> {
   var boards = new List();
 
+  ///
+  /// Retrieves the [QueenResolver] [boards] that were calculated.
+  /// Will call [SharedPreferences] and get [String] for every posible solution.
+  /// Will then append it to [boards] and [setState()]
+  ///
   Future retrieveEightQueensResults() async {
     final prefs = await SharedPreferences.getInstance();
     var _boards = new List();
@@ -36,7 +42,11 @@ class _ResultsPageState extends State<ResultsPage> {
       super.initState();
     });
   }
-  
+
+  ///
+  /// Simple Item builder to display a [board]
+  /// Uses [String] concatenation to make it work
+  ///
   Widget ResultItem(BuildContext context, int index) {
     String todisplay = "";
     for(int x = 0; x < boards[index].length; x++ ){