Adjust help text, LICENSE and NOTICE, move to nuget packages and clea…

…nup old stuff.

.gitignore

@@ -18,3 +18,4 @@ MigrationBackup/
 
 # MacOS
 .DS_Store
+packed/

CompatibilityChecker.Libary.Tests/CompatibilityChecker.Libary.Tests.csproj

@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="2.1.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="2.1.2" />
+    <PackageReference Include="coverlet.collector" Version="1.3.0">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="System.Reflection.Emit" Version="4.7.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\CompatibilityChecker.Library\CompatibilityChecker.Library.csproj" />
+  </ItemGroup>
+
+</Project>

CompatibilityChecker.Libary.Tests/TestAssemblyAnalysis.cs

@@ -0,0 +1,109 @@
+namespace CompatibilityCheckerTests
+{
+    using System.Collections.ObjectModel;
+    using System.Reflection;
+    using System.Reflection.Emit;
+    using CompatibilityChecker.Library;
+    using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+    [TestClass]
+    public class TestAssemblyAnalysis
+    {
+        [TestMethod]
+        public void TestAssemblyNameMustNotBeChanged_Pass()
+        {
+            AssemblyName referenceName = new AssemblyName("Test.Assembly");
+            AssemblyBuilder referenceAssemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(referenceName, AssemblyBuilderAccess.ReflectionOnly);
+            referenceAssemblyBuilder.Save("Test.Assembly.dll", PortableExecutableKinds.ILOnly, ImageFileMachine.AMD64);
+
+            AssemblyName newAssemblyName = new AssemblyName("Test.Assembly");
+            AssemblyBuilder newAssemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(newAssemblyName, AssemblyBuilderAccess.ReflectionOnly);
+            newAssemblyBuilder.Save("Test.Assembly.V2.dll", PortableExecutableKinds.ILOnly, ImageFileMachine.AMD64);
+
+            ReadOnlyCollection<Message> messages = TestUtility.AnalyzeAssemblies("Test.Assembly.dll", "Test.Assembly.V2.dll");
+            Assert.AreEqual(0, messages.Count);
+        }
+
+        [TestMethod]
+        public void TestAssemblyNameMustNotBeChanged_Fail()
+        {
+            AssemblyName referenceName = new AssemblyName("Test.Assembly");
+            AssemblyBuilder referenceAssemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(referenceName, AssemblyBuilderAccess.ReflectionOnly);
+            referenceAssemblyBuilder.Save("Test.Assembly.dll", PortableExecutableKinds.ILOnly, ImageFileMachine.AMD64);
+
+            AssemblyName newAssemblyName = new AssemblyName("Test.Assembly.V2");
+            AssemblyBuilder newAssemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(newAssemblyName, AssemblyBuilderAccess.ReflectionOnly);
+            newAssemblyBuilder.Save("Test.Assembly.V2.dll", PortableExecutableKinds.ILOnly, ImageFileMachine.AMD64);
+
+            ReadOnlyCollection<Message> messages = TestUtility.AnalyzeAssemblies("Test.Assembly.dll", "Test.Assembly.V2.dll");
+            Assert.AreEqual(1, messages.Count);
+            Assert.AreEqual("Error AssemblyNameMustNotBeChanged: The simple name of an assembly cannot change for 'Test.Assembly'.", messages[0].ToString());
+        }
+
+        [TestMethod]
+        public void TestPublicKeyMustNotBeChanged_PassMissing()
+        {
+            AssemblyName referenceName = new AssemblyName("Test.Assembly");
+            AssemblyBuilder referenceAssemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(referenceName, AssemblyBuilderAccess.ReflectionOnly);
+            referenceAssemblyBuilder.Save("Test.Assembly.dll", PortableExecutableKinds.ILOnly, ImageFileMachine.AMD64);
+
+            AssemblyName newAssemblyName = new AssemblyName("Test.Assembly");
+            AssemblyBuilder newAssemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(newAssemblyName, AssemblyBuilderAccess.ReflectionOnly);
+            newAssemblyBuilder.Save("Test.Assembly.V2.dll", PortableExecutableKinds.ILOnly, ImageFileMachine.AMD64);
+
+            ReadOnlyCollection<Message> messages = TestUtility.AnalyzeAssemblies("Test.Assembly.dll", "Test.Assembly.V2.dll");
+            Assert.AreEqual(0, messages.Count);
+        }
+
+        [TestMethod]
+        public void TestPublicKeyMustNotBeChanged_PassUnchanged()
+        {
+            AssemblyName referenceName = new AssemblyName("Test.Assembly");
+            referenceName.KeyPair = TestUtility.GenerateStrongNameKeyPair();
+            AssemblyBuilder referenceAssemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(referenceName, AssemblyBuilderAccess.ReflectionOnly);
+            referenceAssemblyBuilder.Save("Test.Assembly.dll", PortableExecutableKinds.ILOnly, ImageFileMachine.AMD64);
+
+            AssemblyName newAssemblyName = new AssemblyName("Test.Assembly");
+            newAssemblyName.KeyPair = referenceName.KeyPair;
+            AssemblyBuilder newAssemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(newAssemblyName, AssemblyBuilderAccess.ReflectionOnly);
+            newAssemblyBuilder.Save("Test.Assembly.V2.dll", PortableExecutableKinds.ILOnly, ImageFileMachine.AMD64);
+
+            ReadOnlyCollection<Message> messages = TestUtility.AnalyzeAssemblies("Test.Assembly.dll", "Test.Assembly.V2.dll");
+            Assert.AreEqual(0, messages.Count);
+        }
+
+        [TestMethod]
+        public void TestPublicKeyMustNotBeChanged_PassAdded()
+        {
+            AssemblyName referenceName = new AssemblyName("Test.Assembly");
+            AssemblyBuilder referenceAssemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(referenceName, AssemblyBuilderAccess.ReflectionOnly);
+            referenceAssemblyBuilder.Save("Test.Assembly.dll", PortableExecutableKinds.ILOnly, ImageFileMachine.AMD64);
+
+            AssemblyName newAssemblyName = new AssemblyName("Test.Assembly");
+            newAssemblyName.KeyPair = TestUtility.GenerateStrongNameKeyPair();
+            AssemblyBuilder newAssemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(newAssemblyName, AssemblyBuilderAccess.ReflectionOnly);
+            newAssemblyBuilder.Save("Test.Assembly.V2.dll", PortableExecutableKinds.ILOnly, ImageFileMachine.AMD64);
+
+            ReadOnlyCollection<Message> messages = TestUtility.AnalyzeAssemblies("Test.Assembly.dll", "Test.Assembly.V2.dll");
+            Assert.AreEqual(0, messages.Count);
+        }
+
+        [TestMethod]
+        public void TestPublicKeyMustNotBeChanged_Fail()
+        {
+            AssemblyName referenceName = new AssemblyName("Test.Assembly");
+            referenceName.KeyPair = TestUtility.GenerateStrongNameKeyPair();
+            AssemblyBuilder referenceAssemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(referenceName, AssemblyBuilderAccess.ReflectionOnly);
+            referenceAssemblyBuilder.Save("Test.Assembly.dll", PortableExecutableKinds.ILOnly, ImageFileMachine.AMD64);
+
+            AssemblyName newAssemblyName = new AssemblyName("Test.Assembly");
+            newAssemblyName.KeyPair = TestUtility.GenerateStrongNameKeyPair();
+            AssemblyBuilder newAssemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(newAssemblyName, AssemblyBuilderAccess.ReflectionOnly);
+            newAssemblyBuilder.Save("Test.Assembly.V2.dll", PortableExecutableKinds.ILOnly, ImageFileMachine.AMD64);
+
+            ReadOnlyCollection<Message> messages = TestUtility.AnalyzeAssemblies("Test.Assembly.dll", "Test.Assembly.V2.dll");
+            Assert.AreEqual(1, messages.Count);
+            Assert.AreEqual("Error PublicKeyMustNotBeChanged: The public key of a strong-named assembly 'Test.Assembly' cannot change.", messages[0].ToString());
+        }
+    }
+}