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MSTest 3.4 is here with WinUI support and new analyzers! - .NET Blog
(devblogs.microsoft.com)
When I read the previous news about MSTest I was very confused, remembering that in the past the Microsoft unit test tooling was behind a higher Visual Studio license. I've always been using xUnit as the successor to NUnit as the open source testing frameworks.
Turns out MSTest is open source since 2017.
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