Failing test on API 19 emulator: StreamClosedReturnValues.GetDirectionReturnsLastKnownValue

[dturner]

When running the unit tests on an API 19 emulator I get the following test failure and crash:

01-07 16:54:21.506 8591-8605/com.google.oboe.tests.unittestrunner D/com.google.oboe.tests.unittestrunner.MainActivity: [ RUN ] StreamClosedReturnValues.GetDirectionReturnsLastKnownValue
01-07 16:54:21.516 8607-8607/? W/AudioRecord: AUDIO_INPUT_FLAG_FAST denied by client
01-07 16:54:21.516 1176-1369/? W/AudioPolicyManagerBase: getInput() could not find profile for device 80000004, samplingRate 48000, format 1,channelMask 000c
01-07 16:54:21.516 8607-8607/? E/AudioRecord: Could not get audio input for record source 6
01-07 16:54:21.516 8607-8607/? E/libOpenSLES: android_audioRecorder_realize(0xb7cf2670) error creating AudioRecord object
01-07 16:54:21.516 8607-8607/? W/libOpenSLES: Leaving Object::Realize (SL_RESULT_CONTENT_UNSUPPORTED)
01-07 16:54:21.516 8607-8607/? A/libc: Fatal signal 11 (SIGSEGV) at 0x00000000 (code=1), thread 8607 (testOboe)
01-07 16:54:21.516 8591-8605/com.google.oboe.tests.unittestrunner D/com.google.oboe.tests.unittestrunner.MainActivity: /Users/donturner/Code/workspace-android/oboe/tests/testStreamClosedMethods.cpp:41: Failure
01-07 16:54:21.516 8591-8605/com.google.oboe.tests.unittestrunner D/com.google.oboe.tests.unittestrunner.MainActivity: Expected equality of these values:
01-07 16:54:21.516 8591-8605/com.google.oboe.tests.unittestrunner D/com.google.oboe.tests.unittestrunner.MainActivity: r
01-07 16:54:21.516 8591-8605/com.google.oboe.tests.unittestrunner D/com.google.oboe.tests.unittestrunner.MainActivity: Which is: 4-byte object <80-FC FF-FF>
01-07 16:54:21.516 8591-8605/com.google.oboe.tests.unittestrunner D/com.google.oboe.tests.unittestrunner.MainActivity: Result::OK
01-07 16:54:21.516 8591-8605/com.google.oboe.tests.unittestrunner D/com.google.oboe.tests.unittestrunner.MainActivity: Which is: 4-byte object <00-00 00-00>
01-07 16:54:21.516 8591-8605/com.google.oboe.tests.unittestrunner D/com.google.oboe.tests.unittestrunner.MainActivity: Failed to open stream ErrorInternal

It looks like the API 19 emulator encounters a problem creating recording streams.

[dturner]

Still occurring with latest master branch.

[dturner]

Tests pass on API 28 emulator. Additionally the test runner app prompts for the recording permission on startup.

A possible cause for the error on API 19 is that for some reason the recording permission is not being granted.