Add W3C encrypted-media tests

third_party/WebKit/LayoutTests/imported/wpt/encrypted-media/scripts/setmediakeys-multiple-times-with-different-mediakeys.js

+function runTest(config, qualifier) {
+    var testname = testnamePrefix( qualifier, config.keysystem )
+                         + ', setmediakeys multiple times with different mediakeys';
+
+    var configuration = getSimpleConfigurationForContent( config.content );
+
+    async_test (function (test) {
+        var _video = config.video,
+            _access,
+            _mediaKeys1,
+            _mediaKeys2,
+            _usingMediaKeys2 = false;;
+
+        // Test MediaKeys assignment.
+        assert_equals(_video.mediaKeys, null);
+        assert_equals(typeof _video.setMediaKeys, 'function');
+
+        function onFailure(error) {
+            forceTestFailureFromPromise(test, error);
+        }
+
+        navigator.requestMediaKeySystemAccess(config.keysystem, [configuration]).then(function(access) {
+            _access = access;
+            return _access.createMediaKeys();
+        }).then(test.step_func(function(result) {
+            _mediaKeys1 = result;
+            assert_not_equals(_mediaKeys1, null);
+            // Create a second mediaKeys.
+            return _access.createMediaKeys();
+        })).then(test.step_func(function(result) {
+            _mediaKeys2 = result;
+            assert_not_equals(_mediaKeys2, null);
+            // Set _mediaKeys1 on video.
+            return _video.setMediaKeys(_mediaKeys1);
+        })).then(test.step_func(function() {
+            assert_equals(_video.mediaKeys, _mediaKeys1);
+            // Set _mediaKeys2 on video (switching MediaKeys).
+            return _video.setMediaKeys(_mediaKeys2);
+        })).then(test.step_func(function() {
+            assert_equals(_video.mediaKeys, _mediaKeys2);
+            // Clear mediaKeys from video.
+            return _video.setMediaKeys(null);
+        })).then(test.step_func(function() {
+            assert_equals(_video.mediaKeys, null);
+            // Set _mediaKeys1 on video again.
+            return _video.setMediaKeys(_mediaKeys1);
+        })).then(test.step_func(function() {
+            assert_equals(_video.mediaKeys, _mediaKeys1);
+            return testmediasource(config);
+        })).then(function(source) {
+            // Set src attribute on Video Element
+            _video.src = URL.createObjectURL(source);
+            // According to the specification, support for changing the Media Keys object after
+            // the src attribute on the video element has been set is optional. The following operation
+            // may therefore either succeed or fail. We handle both cases.
+            return _video.setMediaKeys(_mediaKeys2);
+        }).then(test.step_func(function() {
+            // Changing the Media Keys object succeeded
+            _usingMediaKeys2 = true;
+            assert_equals(_video.mediaKeys, _mediaKeys2);
+            // Return something so the promise resolves properly.
+            return Promise.resolve();
+        }), test.step_func(function(error) {
+            // Changing the Media Keys object failed
+            _usingMediaKeys2 = false;
+            assert_equals(_video.mediaKeys, _mediaKeys1);
+            // The specification allows either NotSupportedError or InvalidStateError depending on
+            // whether the failure was because changing Media Keys object is not supported
+            // or just not allowed at this time, respectively.
+            assert_in_array(error.name, ['InvalidStateError','NotSupportedError']);
+            assert_not_equals(error.message, '');
+            // Return something so the promise resolves properly.
+            return Promise.resolve();
+        })).then(function() {
+            // According to the specification, support for clearing the Media Keys object associated
+            // with the video element is optional. The following operation
+            // may therefore either succeed or fail. We handle both cases.
+            return _video.setMediaKeys(null);
+        }).then(test.step_func(function() {
+            // Clearing the media keys succeeded
+            assert_equals(_video.mediaKeys, null);
+            test.done();
+        }), test.step_func(function(error) {
+            // Clearing the media keys failed
+            if(!_usingMediaKeys2) {
+                assert_equals(_video.mediaKeys, _mediaKeys1);
+            } else {
+                assert_equals(_video.mediaKeys, _mediaKeys2);
+            }
+            // The specification allows either NotSupportedError or InvalidStateError depending on
+            // whether the failure was because changing Media Keys object is not supported
+            // or just not allowed at this time, respectively.
+            assert_in_array(error.name, ['InvalidStateError','NotSupportedError']);
+            assert_not_equals(error.message, '');
+            test.done();
+        })).catch(onFailure);
+    }, testname);
+}