set CI env var & update audio/video tests

* isDarwin() now checks CI env var. This way all tests can be run locally
* test_osn_audio: do not check for default audio device on the test runner
* test_osn_advanced_replayBuffer.ts: still flaky on macOS test runner so
disable on those
* main.yml: add CI environment variable

Author: sandboxcoder

.github/workflows/main.yml

@@ -151,6 +151,7 @@ jobs:
           OSN_ACCESS_KEY_ID: ${{secrets.AWS_RELEASE_ACCESS_KEY_ID}}
           OSN_SECRET_ACCESS_KEY: ${{secrets.AWS_RELEASE_SECRET_ACCESS_KEY}}
           RELEASE_NAME: ${{matrix.ReleaseName}}
+          CI: true
       # Run even after test failures so the PR still gets the flaky summary.
       - name: Publish flaky test check
         if: ${{ always() }}

tests/osn-tests/src/test_osn_advanced_replayBuffer.ts

@@ -131,6 +131,9 @@ describe(testName, () => {
     });
 
     it('Start advanced replay buffer - Use Recording', async function() {
+        if (obs.isDarwin()) {
+            this.skip();
+        }
         replayBuffer = osn.AdvancedReplayBufferFactory.create();
         replayBuffer.path = path.join(path.normalize(__dirname), '..', 'osnData');
         replayBuffer.format = osn.ERecordingFormat.MP4;
@@ -258,6 +261,9 @@ describe(testName, () => {
     });
 
     it('Start advanced replay buffer - Use Stream through Recording', async function() {
+        if (obs.isDarwin()) {
+            this.skip();
+        }
         replayBuffer = osn.AdvancedReplayBufferFactory.create();
         replayBuffer.path = path.join(path.normalize(__dirname), '..', 'osnData');
         replayBuffer.format = osn.ERecordingFormat.MP4;

tests/osn-tests/src/test_osn_audio.ts

@@ -70,7 +70,9 @@ describe(testName, () => {
                 foundDefaultDevice = true;
             }
         }
-        expect(foundDefaultDevice).to.equal(true, GetErrorMessage(ETestErrorMsg.DefaultDeviceNotFound));
+        if (!obs.isDarwin()) { // On virtual mac(s) the default output device is not included in the list of output devices
+            expect(foundDefaultDevice).to.equal(true, GetErrorMessage(ETestErrorMsg.DefaultDeviceNotFound));
+        }
     });
 
     it('Get input audio devices', function() {

tests/osn-tests/util/obs_handler.ts

@@ -553,8 +553,8 @@ export class OBSHandler {
 
     isDarwin()
     {
-        // Wrapped this in a function- just incase we want to add more conditions later or disable only within the build agent.
-        return this.os === 'darwin';
+        // Wrapped this in a function- just in case we want to add more conditions later or disable only within the build agent.
+        return this.os === 'darwin' && this.ci;
     }
 
     // is the build server environment