[PATCH v3 0/4] MR7125: mfreadwrite/tests: Add some tests.

[Ziqing Hui (＠zhui)]

These tests are for implementing encoding of sink writer. The implements MR is !7160, working in progress. Submitted the tests MR first.

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  v3: mfreadwrite/tests: Test sample processing for mp4 sink writer.
      mfreadwrite/tests: Test getting transforms from mp4 sink writer.
      mfreadwrite/tests: Test AddStream and SetInputMediaType for mp4 sink writer.
      mfreadwrite/tests: Remove trivial if.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/7125