Fix the qaudioinput test failures on macOS

There was a race condition in the code as the audio samples can be read
read the device from a separate thread.

Also the buffer to write to needs to be opened.

Change-Id: I89896a8e3258999d51e1415f75df979405306937
Reviewed-by: Doris Verria <doris.verria@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

2 files changed, 5 insertions, 4 deletions

diff --git a/tests/auto/integration/qaudioinput/BLACKLIST b/tests/auto/integration/qaudioinput/BLACKLIST
deleted file mode 100644
index 0b76f6f8a..000000000
--- a/tests/auto/integration/qaudioinput/BLACKLIST
+++ /dev/null
@@ -1,2 +0,0 @@
-[reset]
-macos
diff --git a/tests/auto/integration/qaudioinput/tst_qaudioinput.cpp b/tests/auto/integration/qaudioinput/tst_qaudioinput.cpp
index dcbc9f5b5..3b8dc6fd4 100644
--- a/tests/auto/integration/qaudioinput/tst_qaudioinput.cpp
+++ b/tests/auto/integration/qaudioinput/tst_qaudioinput.cpp
@@ -142,8 +142,10 @@ void tst_QAudioInput::initTestCase()
     QAudioFormat format;
     format.setChannelCount(1);
 
-    if (audioDevice.isFormatSupported(audioDevice.preferredFormat()))
-        testFormats.append(audioDevice.preferredFormat());
+    if (audioDevice.isFormatSupported(audioDevice.preferredFormat())) {
+        if (format.sampleFormat() == QAudioFormat::Int16)
+            testFormats.append(audioDevice.preferredFormat());
+    }
 
     // PCM 11025 mono S16LE
     format.setSampleRate(11025);
@@ -715,6 +717,7 @@ void tst_QAudioInput::reset()
     {
         QAudioInput audioInput(audioFormat, this);
         QBuffer buffer;
+        buffer.open(QIODevice::WriteOnly);
 
         QSignalSpy stateSignal(&audioInput, SIGNAL(stateChanged(QAudio::State)));