Add W3C encrypted-media tests

third_party/WebKit/LayoutTests/imported/wpt/encrypted-media/scripts/waiting-for-a-key.js

+function runTest(config)
+{
+    // For debugging timeouts, keep track of the number of the
+    // various events received.
+    var debugEncryptedEventFired = false;
+    var debugWaitingForKeyEventFired = false;
+    var debugTimeUpdateEventCount = 0;
+    var debugMessage = '';
+
+    // Set global option explicit_timeout to true and control
+    // the timeout in the promise test below.
+    setup({
+        explicit_timeout: true
+    });
+
+    promise_test(function (test) {
+        var video = config.video;
+        var keysystem = config.keysystem;
+        var configuration = {
+            initDataTypes: [config.initDataType],
+            audioCapabilities: [{
+                contentType: config.audioType
+            }],
+            videoCapabilities: [{
+                contentType: config.videoType
+            }],
+            sessionTypes: ['temporary']
+        };
+        var initData;
+        var initDataType;
+        var mediaKeySession;
+        // As this code doesn't wait for the 'message' event for clearkey to avoid
+        // race conditions with 'waitingforkey', specify the key ID and
+        // key used by the encrypted content.
+        var keyId = new Uint8Array(config.content.keys[0].kid);
+        var rawKey = new Uint8Array(config.content.keys[0].key);
+        // Use the message handler for non clearkey drm
+        var handler = config.messageHandler || null;
+
+        // Override timeout() to use custom message instead of default
+        // message "Test timed out"
+        test.timeout = function () {
+            var message = 'timeout. message = ' + debugMessage
+              + ', encrypted: ' + debugEncryptedEventFired
+              + ', waitingforkey: ' + debugWaitingForKeyEventFired
+              + ', timeupdate count: ' + debugTimeUpdateEventCount;
+
+            this.timeout_id = null;
+            this.set_status(this.TIMEOUT, message);
+            this.phase = this.phases.HAS_RESULT;
+            this.done();
+        };
+
+        return navigator.requestMediaKeySystemAccess(keysystem, [configuration]).then(function (access) {
+            debugMessage = 'createMediaKeys()';
+            return access.createMediaKeys();
+        }).then(function (mediaKeys) {
+              debugMessage = 'setMediaKeys()';
+              return video.setMediaKeys(mediaKeys);
+        }).then(function () {
+            return testmediasource(config);
+        }).then(function (source) {
+            debugMessage = 'wait_for_encrypted_event()';
+            mediaSource = source;
+            video.src = URL.createObjectURL(mediaSource);
+            video.play();
+            return wait_for_encrypted_event(video);
+        }).then(function (e) {
+            // Received the 'encrypted' event(s), so keep a copy of
+            // the initdata for use when creating the session later.
+            initDataType = config.initData ? config.initDataType : e.initDataType;
+            initData = config.initData || e.initData;
+            // Wait until the video indicates that it needs a key to
+            // continue.
+            debugMessage = 'wait_for_waitingforkey_event()';
+            return wait_for_waitingforkey_event(video);
+        }).then(function () {
+            // Make sure the video is NOT paused and not progressing
+            // before a key is provided. This requires the video
+            // to NOT have a clear lead.
+            assert_false(video.paused);
+            assert_less_than(video.currentTime, 0.2);
+            // Create a session.
+            mediaKeySession = video.mediaKeys.createSession('temporary');
+            debugMessage = 'generateRequest()';
+            return mediaKeySession.generateRequest(initDataType, initData);
+        }).then(function () {
+            // generateRequest() will cause a 'message' event to
+            // occur specifying the keyId that is needed
+            // Add the key needed to decrypt.
+            return wait_for_message_event(mediaKeySession, handler);
+        }).then(function () {
+            // Video should start playing now that it can decrypt the
+            // streams, so wait until a little bit of the video has
+            // played.
+            debugMessage = 'wait_for_timeupdate_event()';
+            return wait_for_timeupdate_event(video);
+        }).catch(function (error) {
+            assert_unreached('Error: ' + error.name);
+        });
+
+        // Typical test duration is 6 seconds on release builds
+        // (12 seconds on debug).
+    }, 'Waiting for a key.', {timeout: 20000});
+
+    // Wait for an 'encrypted' event
+    function wait_for_encrypted_event(video)
+    {
+        return new Promise(function (resolve) {
+            video.addEventListener('encrypted', function listener(e) {
+                assert_equals(e.target, video);
+                assert_true(e instanceof window.MediaEncryptedEvent);
+                assert_equals(e.type, 'encrypted');
+                debugEncryptedEventFired = true;
+                video.removeEventListener('encrypted', listener);
+                resolve(e);
+            });
+        });
+    };
+
+    // Wait for a 'waitingforkey' event. Promise resolved when the
+    // event is received.
+    function wait_for_waitingforkey_event(video)
+    {
+        return new Promise(function (resolve) {
+            video.addEventListener('waitingforkey', function listener(e) {
+                assert_equals(e.target, video);
+                assert_equals(e.type, 'waitingforkey');
+                debugWaitingForKeyEventFired = true;
+                video.removeEventListener('waitingforkey', listener);
+                resolve(e);
+            });
+        });
+    };
+
+    // Wait for a 'timeupdate' event. Promise resolved if |video| has
+    // played for more than 0.2 seconds.
+    function wait_for_timeupdate_event(video)
+    {
+        return new Promise(function (resolve) {
+            video.addEventListener('timeupdate', function listener(e) {
+                assert_equals(e.target, video);
+                ++debugTimeUpdateEventCount;
+                if (video.currentTime < 0.2)
+                    return;
+                video.removeEventListener('timeupdate', listener);
+                resolve(e);
+            });
+        });
+    };
+
+    // We need to wait for the message even if for non clearkey DRMs.
+    function wait_for_message_event(mediaKeySession, handler)
+    {
+        return new Promise(function (resolve, reject) {
+            mediaKeySession.addEventListener('message', function listener(e) {
+                assert_equals(e.target, mediaKeySession);
+                assert_equals(e.type, 'message');
+                video.removeEventListener('message', listener);
+                return handler(e.messageType, e.message).then(function (response) {
+                    return e.target.update(response)
+                }).then(resolve, reject);
+            });
+        });
+    }
+}