function runTest(config, qualifier) { var testname = testnamePrefix( qualifier, config.keysystem ) + ', setMediaKeys'; var configuration = getSimpleConfigurationForContent( config.content ); if ( config.initDataType && config.initData ) { configuration.initDataTypes = [ config.initDataType ]; } async_test (function (test) { var _video = config.video, _mediaKeys; // Test MediaKeys assignment. assert_equals(_video.mediaKeys, null); assert_equals(typeof _video.setMediaKeys, 'function'); function onFailure(error) { forceTestFailureFromPromise(test, error); } // Try setting mediaKeys to null. _video.setMediaKeys(null).then(function(result) { assert_equals(_video.mediaKeys, null); // setMediaKeys should fail when setting to the wrong type of object - Date. return _video.setMediaKeys(new Date()); }).then(function (result) { assert_unreached('setMediaKeys should fail when setting to wrong kind of object (Date)'); }, function(error) { // The error should be TypeError. assert_equals(error.name, 'setMediaKeys should return a TypeError when setting to wrong kind of object (Date)'); return navigator.requestMediaKeySystemAccess(config.keysystem, [configuration]); }).then(function(access) { assert_equals(access.keySystem, config.keysystem) return access.createMediaKeys(); }).then(function(result) { _mediaKeys = result; assert_not_equals(_mediaKeys, null); assert_equals(typeof _mediaKeys.createSession, 'function'); return _video.setMediaKeys(_mediaKeys); }).then(function(result) { assert_not_equals(_video.mediaKeys, null); assert_equals(_video.mediaKeys, _mediaKeys); test.done(); }).catch(onFailure); }, testname); }