MSTest runner as first class citizen in dotnet test

[Evangelink]

MSTest runner has an option to integrate with dotnet test (see https://learn.microsoft.com/dotnet/core/testing/unit-testing-mstest-runner-integrations#dotnet-test---mstest-runner-mode) but this support is not perfect.

For examples, to pass the arguments of MSTest runner, users have to rely on -p:TestingPlatformCommandLineArguments.

Another big limitation is the fact that the new runner doesn't provide any easy solution to provide a merged experience (e.g. produce a single merged TRX report after the executions of multiple tests).

To improve this experience, we need to update the logic inside https://github.com/dotnet/sdk.

[TheFireCookie]

Hello @Evangelink , do you know where the doc went? The link seems to be dead.
This one : https://learn.microsoft.com/en-us/docs/core/testing/unit-testing-platform-integration-dotnet-test#dotnet-test---mstest-runner-mode

[Evangelink]

Oh wow ok looks like the redirect isn't working... Sorry for the inconvenience... I refactored all docs that are generic to the new platform under a new section (link for the page you want https://learn.microsoft.com/dotnet/core/testing/unit-testing-platform-integration-dotnet-test) as we are working with xUnit and NUnit so they can benefit from the improvements and features of our new platform.

[Evangelink]

Moving to v3.5 as the task is bigger than a single sprint.