mediacapture-image/MediaStreamTrack-getSettings.html

<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/mediacapture-image/resources/imagecapture-helpers.js"></script>
<body>
<canvas id='canvas' width=10 height=10/>
</body>
<script>

const meteringModeNames = ['none', 'manual', 'single-shot', 'continuous'];

// This test verifies that the settings defined in the mock Mojo service
// implementation are the same as those returned by the corresponding
// MediaStreamTrack.getSettings().

image_capture_test(async (t, imageCaptureTest) => {
  let canvas = document.getElementById('canvas');
  let context = canvas.getContext('2d');
  context.fillStyle = 'red';
  context.fillRect(0, 0, 10, 10);

  let mockSettings = imageCaptureTest.mockImageCapture().state();

  // |stream| must be created _after_ |mock| is constructed to give the
  // latter time to override the bindings.
  let stream = canvas.captureStream();
  let videoTrack = stream.getVideoTracks()[0];

  // |videoTrack|s settings retrieval, just like the actual capture, is a
  // process kicked right after creation, we introduce a small delay to
  // allow for those to be collected.
  await new Promise(resolve => step_timeout(resolve, 100));

  let settings = videoTrack.getSettings();
  assert_equals(typeof settings, 'object');

  assert_equals(settings.whiteBalanceMode,
                meteringModeNames[mockSettings.currentWhiteBalanceMode],
                'whiteBalanceMode');
  assert_equals(settings.exposureMode,
                meteringModeNames[mockSettings.currentExposureMode],
                'exposureMode;');
  assert_equals(settings.focusMode,
                meteringModeNames[mockSettings.currentFocusMode],
                'focusMode');

  assert_point2d_array_approx_equals(
      settings.pointsOfInterest, mockSettings.pointsOfInterest, 0.01);

  assert_equals(settings.exposureCompensation,
                mockSettings.exposureCompensation.current);
  assert_equals(settings.exposureTime,
                mockSettings.exposureTime.current);
  assert_equals(settings.colorTemperature,
                mockSettings.colorTemperature.current);
  assert_equals(settings.iso, mockSettings.iso.current);

  assert_equals(settings.brightness, mockSettings.brightness.current);
  assert_equals(settings.contrast, mockSettings.contrast.current);
  assert_equals(settings.saturation, mockSettings.saturation.current);
  assert_equals(settings.sharpness, mockSettings.sharpness.current);

  assert_equals(settings.focusDistance, mockSettings.focusDistance.current);
  assert_equals(settings.zoom, mockSettings.zoom.current);

  assert_equals(settings.torch, mockSettings.torch, 'torch');

}, 'exercises MediaStreamTrack.getSettings()');

</script>