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Add tests for mediacapture-image
Cover following checkpoints: - throw TypeError when ImageCapture parameter is not mediaStramTrack - ImageCapture track attribute is readonly - getPhotoCapabilities() of an ended Track should throw InvalidStateError - getPhotoSettings() of an ended Track should throw InvalidStateError - takePhoto() of an ended Track should throw InvalidStateError - the parameter of takePhoto() is nullable
1 parent a0fb7d2 commit afd909b

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‎mediacapture-image/ImageCapture-creation.https.html

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this.unreached_func('Error creating MediaStream.'));
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}, 'verifies that an ImageCapture cannot be created out of an Audio Track');
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var testParameter = test(function() {
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const invalidParameters = [
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"invalid",
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null,
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123,
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{},
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"",
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true
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];
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assert_throws(new TypeError(),
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function() { var capturer = new ImageCapture(); },
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'an ImageCapturer can not be created with no parameter');
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invalidParameters.map(parameter => {
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assert_throws(new TypeError(),
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function() { var capturer = new ImageCapture(parameter); },
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`an ImageCapturer can not be created with a ${parameter} parameter`);
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});
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}, 'throw "TypeError" if parameter is not MediaStreamTrack.');
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</script>

‎mediacapture-image/ImageCapture-track.html

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<!DOCTYPE html>
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<meta charset="utf-8">
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<title>ImageCapture track</title>
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<link rel="author" title="Intel" href="http://www.intel.com">
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<link rel="help" href="https://w3c.github.io/mediacapture-image/#dom-imagecapture-track">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<canvas id='canvas' width=10 height=10></canvas>
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<script>
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test(t => {
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let canvas = document.getElementById('canvas');
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let context = canvas.getContext('2d');
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context.fillStyle = 'red';
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context.fillRect(0, 0, 10, 10);
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let stream = canvas.captureStream();
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let videoTrack = stream.getVideoTracks()[0];
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assert_equals(videoTrack.readyState, "live");
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assert_true(videoTrack.enabled);
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let capturer = new ImageCapture(videoTrack);
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assert_true(capturer.track instanceof MediaStreamTrack);
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assert_equals(capturer.track, videoTrack);
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capturer.track.enabled = false;
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assert_true(videoTrack.enabled, "track enabled");
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capturer.track.stop();
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assert_equals(videoTrack.readyState, "live", "track readyState");
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}, "ImageCapture track attribute is readonly")
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</script>

‎mediacapture-image/getPhotoCapabilities.html

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}, 'exercises ImageCapture.getPhotoCapabilities()');
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promise_test(t => {
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let canvas = document.getElementById('canvas');
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let context = canvas.getContext('2d');
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context.fillStyle = 'red';
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context.fillRect(0, 0, 10, 10);
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let stream = canvas.captureStream();
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let videoTrack = stream.getVideoTracks()[0];
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videoTrack.stop();
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let capturer = new ImageCapture(videoTrack);
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assert_equals(videoTrack.readyState, 'ended');
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return promise_rejects(t, 'InvalidStateError', capturer.getPhotoCapabilities())
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}, 'getPhotoCapabilities() of an ended Track should throw "InvalidStateError"');
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</script>

‎mediacapture-image/getPhotoSettings.html

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}, 'exercises ImageCapture.getPhotoSettings()');
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promise_test(t => {
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let canvas = document.getElementById('canvas');
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let context = canvas.getContext('2d');
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context.fillStyle = 'red';
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context.fillRect(0, 0, 10, 10);
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let stream = canvas.captureStream();
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let videoTrack = stream.getVideoTracks()[0];
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videoTrack.stop();
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let capturer = new ImageCapture(videoTrack);
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assert_equals(videoTrack.readyState, 'ended');
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return promise_rejects(t, 'InvalidStateError', capturer.getPhotoSettings())
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}, 'getPhotoSettings() of an ended Track should throw "InvalidStateError"');
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</script>

‎mediacapture-image/takePhoto.html

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}, 'exercises ImageCapture.takePhoto()');
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image_capture_test(async t => {
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let canvas = document.getElementById('canvas');
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let context = canvas.getContext('2d');
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context.fillStyle = 'red';
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context.fillRect(0, 0, 10, 10);
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let stream = canvas.captureStream();
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let capturer = new ImageCapture(stream.getVideoTracks()[0]);
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let blob = await capturer.takePhoto(null);
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// JS Blob is almost-opaque, can only check |type| and |size|.
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assert_equals(blob.type, 'image/cat');
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assert_equals(blob.size, 2);
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}, 'exercises ImageCapture.takePhoto(null)');
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promise_test(t => {
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let canvas = document.getElementById('canvas');
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let context = canvas.getContext('2d');
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context.fillStyle = 'red';
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context.fillRect(0, 0, 10, 10);
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let stream = canvas.captureStream();
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let videoTrack = stream.getVideoTracks()[0];
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videoTrack.stop();
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let capturer = new ImageCapture(videoTrack);
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assert_equals(videoTrack.readyState, 'ended');
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return promise_rejects(t, 'InvalidStateError', capturer.takePhoto())
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}, 'takePhoto() of an ended Track should throw "InvalidStateError"');
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</script>

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