Bug fixes and test Updates.

[AraHaan]

Checklist

• I have read the Code of Conduct and the Contributing files before opening this issue.
• I have verified the issue this pull request fixes or feature this pull request implements is to the current release.
• I am using the latest stable release with the above code fix or the current main branch if code changes are present (prerelease code changes).
• I have debugged and tested my changes before submitting this issue and that everything should just work.

Describe the issue this fixes / feature this adds

The test updates are due to dotnet/roslyn-sdk#1231, dotnet/roslyn-sdk#1162, and dotnet/roslyn-sdk#1144.

Fixes #42
Fixes #43
Fixes #44

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