1 files changed, 33 insertions, 0 deletions
diff --git a/testing/web-platform/tests/media-source/dedicated-worker/mediasource-worker-objecturl.js b/testing/web-platform/tests/media-source/dedicated-worker/mediasource-worker-objecturl.js
new file mode 100644
index 0000000000..2e70d99418
--- /dev/null
+++ b/testing/web-platform/tests/media-source/dedicated-worker/mediasource-worker-objecturl.js
@@ -0,0 +1,33 @@
+importScripts("/resources/testharness.js");
+
+test(t => {
+  // The Window test html conditionally fetches and runs these tests only if the
+  // implementation exposes a true-valued static canConstructInDedicatedWorker
+  // attribute on MediaSource in the Window context. So, the implementation must
+  // agree on support here in the dedicated worker context.
+
+  // Ensure we're executing in a dedicated worker context.
+  assert_true(self instanceof DedicatedWorkerGlobalScope, "self instanceof DedicatedWorkerGlobalScope");
+  assert_true(MediaSource.hasOwnProperty("canConstructInDedicatedWorker", "DedicatedWorker MediaSource hasOwnProperty 'canConstructInDedicatedWorker'"));
+  assert_true(MediaSource.canConstructInDedicatedWorker, "DedicatedWorker MediaSource.canConstructInDedicatedWorker");
+}, "MediaSource in DedicatedWorker context must have true-valued canConstructInDedicatedWorker if Window context had it");
+
+test(t => {
+  const ms = new MediaSource();
+  assert_equals(ms.readyState, "closed");
+}, "MediaSource construction succeeds with initial closed readyState in DedicatedWorker");
+
+test(t => {
+  const ms = new MediaSource();
+  const url = URL.createObjectURL(ms);
+}, "URL.createObjectURL(mediaSource) in DedicatedWorker does not throw exception");
+
+test(t => {
+  const ms = new MediaSource();
+  const url1 = URL.createObjectURL(ms);
+  const url2 = URL.createObjectURL(ms);
+  URL.revokeObjectURL(url1);
+  URL.revokeObjectURL(url2);
+}, "URL.revokeObjectURL(mediaSource) in DedicatedWorker with two url for same MediaSource");
+
+done();