Microsoft.Extensions.Http test failure on mono

[maryamariyan]

This issue tracks Http test failing on Mono:

Microsoft.Extensions.Http.DefaultHttpClientFactoryTest.Factory_CleanupCycle_DisposesLiveHandler

https://helix.dot.net/api/2019-06-17/jobs/c6ed46b1-0512-4f5d-b721-ecaaaa01dc59/workitems/Microsoft.Extensions.Http.Tests/console

Discovering: Microsoft.Extensions.Http.Tests (method display = ClassAndMethod, method display options = None)
  Discovered:  Microsoft.Extensions.Http.Tests (found 70 test cases)
  Starting:    Microsoft.Extensions.Http.Tests (parallel test collections = on, max threads = 2)
    Microsoft.Extensions.Http.DefaultHttpClientFactoryTest.Factory_CleanupCycle_DisposesLiveHandler [FAIL]
      Cleanup entry disposable
      Expected: True
      Actual:   False
      Stack Trace:
        /_/src/libraries/Microsoft.Extensions.Http/tests/DefaultHttpClientFactoryTest.cs(449,0): at Microsoft.Extensions.Http.DefaultHttpClientFactoryTest.Factory_CleanupCycle_DisposesLiveHandler()
        --- End of stack trace from previous location ---
  Finished:    Microsoft.Extensions.Http.Tests

[safern]

Added console output to description since the file links might expire.

[danmoseley]

@maryamariyan there is a label runtime-mono that is handy for mono specific issues

[danmoseley]

Likely relates to different GC behavior on Mono. Test says "depends on the GC and timing."

[jkotas]

Failed in #39717

[danmoseley]

@maryamariyan please fix or disable

[akoeplinger]

@maryamariyan I think this is the result of different GC on Mono, we disabled some similar tests with the PlatformDetection.IsPreciseGcSupported which returns false on Mono. The same should be done with this test.

[directhex]

Closing the issue, since the test in question is now annotated with IsPreciseGcSupported. If Mono ever supports that, we can revisit related issues.