Add W3C encrypted-media tests

third_party/WebKit/LayoutTests/imported/wpt/encrypted-media/scripts/keystatuses-multiple-sessions.js

+function runTest(config,qualifier)
+{
+    var testname = testnamePrefix(qualifier, config.keysystem) + ', temporary, keystatuses, multiple sessions';
+
+    var configuration = getSimpleConfigurationForContent(config.content);
+
+    if (config.initDataType && config.initData) configuration.initDataTypes = [config.initDataType];
+
+    async_test(function(test)
+    {
+        var mediaKeySession1;
+        var mediaKeySession2;
+
+        // Even though key ids are uint8, using printable values so that
+        // they can be verified easily.
+        var key1 = new Uint8Array(config.content.keys[0].kid),
+            key2 = new Uint8Array(config.content.keys[1].kid),
+            variant1 = config.content.keys[0].variantId,
+            variant2 = config.content.keys[1].variantId;
+
+        function onFailure(error) {
+            forceTestFailureFromPromise(test,error);
+        }
+
+        function processMessage1(event)
+        {
+            // This should only be called for session1.
+            assert_equals(event.target, mediaKeySession1);
+
+            // No keys added yet.
+            verifyKeyStatuses(mediaKeySession1.keyStatuses, {expected: [], unexpected: [key1, key2]});
+
+            // Add key1 to session1.
+            config.messagehandler(event.messageType, event.message, {variantId:variant1}).then(function(response) {
+                return event.target.update(response);
+            }).catch(onFailure);
+
+        }
+
+        function processKeyStatusesChange1(event)
+        {
+            // This should only be called for session1.
+            assert_equals(event.target, mediaKeySession1);
+
+            // Check that keyStatuses contains the expected key1 only.
+            verifyKeyStatuses(mediaKeySession1.keyStatuses, {expected: [key1], unexpected: [key2]});
+
+            // Now trigger a message event on session2.
+            mediaKeySession2.generateRequest(config.initDataType, config.initData[1]).catch(onFailure);
+        }
+
+        function processMessage2(event)
+        {
+            // This should only be called for session2.
+            assert_equals(event.target, mediaKeySession2);
+
+            // session2 has no keys added yet.
+            verifyKeyStatuses(mediaKeySession2.keyStatuses, {expected: [], unexpected: [key1, key2]});
+
+            // session1 should still have 1 key.
+            verifyKeyStatuses(mediaKeySession1.keyStatuses, {expected: [key1], unexpected: [key2]});
+
+            // Add key2 to session2.
+            config.messagehandler(event.messageType, event.message, {variantId:variant2}).then(function(response) {
+                return event.target.update(response);
+            }).catch(onFailure);
+        }
+
+        function processKeyStatusesChange2(event)
+        {
+            // This should only be called for session2.
+            assert_equals(event.target, mediaKeySession2);
+
+            // Check that keyStatuses contains the expected key2 only.
+            verifyKeyStatuses(mediaKeySession2.keyStatuses, {expected: [key2], unexpected: [key1]});
+
+            // session1 should still have 1 key.
+            verifyKeyStatuses(mediaKeySession1.keyStatuses, {expected: [key1], unexpected: [key2]});
+
+            test.done();
+        }
+
+        navigator.requestMediaKeySystemAccess(config.keysystem, [configuration]).then(function(access) {
+            return access.createMediaKeys();
+        }).then(function(mediaKeys) {
+            mediaKeySession1 = mediaKeys.createSession();
+            mediaKeySession2 = mediaKeys.createSession();
+
+            // There should be no keys defined on either session.
+            verifyKeyStatuses(mediaKeySession1.keyStatuses, {expected: [], unexpected: [key1, key2]});
+            verifyKeyStatuses(mediaKeySession2.keyStatuses, {expected: [], unexpected: [key1, key2]});
+
+            // Bind all the event handlers now.
+            waitForEventAndRunStep('message', mediaKeySession1, processMessage1, test);
+            waitForEventAndRunStep('message', mediaKeySession2, processMessage2, test);
+            waitForEventAndRunStep('keystatuseschange', mediaKeySession1, processKeyStatusesChange1, test);
+            waitForEventAndRunStep('keystatuseschange', mediaKeySession2, processKeyStatusesChange2, test);
+
+            // Generate a request on session1.
+            return mediaKeySession1.generateRequest(config.initDataType, config.initData[0]);
+        }).catch(onFailure);
+    },  testname );
+}