Moved CanGenerateMixinCodeForSourceFile() to VisualStuioEventTestBase
Cleaned up whitespace /commented code
Fixed code refactoring bug
Decorated with TestFixture
Added new OnProjectItemOpenedTest
Fixed spelling mistake in method name
Moved Tests to seperate files
Marked TestBase class abstract (so it doesn't appear in test results)
ConcurrentDictionarys should be static
Added VisualStudioOpenDocumentManager