Fix addSourceBuffer(null) test case expectation (#3653) A null value passed to a non-nullable method DOMString argument is converted to a DOMString "null". Therefore, it is not an empty string, and the addSourceBuffer() implementation should instead throw a NotSupportedException per the spec: "If type contains a MIME type that is not supported or contains a MIME type that is not supported with the types specified for the other SourceBuffer objects in sourceBuffers, then throw a NotSupportedError exception and abort these steps."
diff --git a/media-source/mediasource-addsourcebuffer.html b/media-source/mediasource-addsourcebuffer.html index 67ea971..9fc9463 100644 --- a/media-source/mediasource-addsourcebuffer.html +++ b/media-source/mediasource-addsourcebuffer.html
@@ -29,7 +29,7 @@ mediasource_test(function(test, mediaElement, mediaSource) { - assert_throws(new TypeError(), + assert_throws("NotSupportedError", function() { mediaSource.addSourceBuffer(null); }, "addSourceBuffer() threw an exception when passed null."); test.done(); 