1 files changed, 29 insertions, 0 deletions
diff --git a/testing/web-platform/tests/workers/dedicated-worker-from-blob-url.window.js b/testing/web-platform/tests/workers/dedicated-worker-from-blob-url.window.js
new file mode 100644
index 0000000000..8455285571
--- /dev/null
+++ b/testing/web-platform/tests/workers/dedicated-worker-from-blob-url.window.js
@@ -0,0 +1,29 @@
+function message_from_port(port) {
+  return new Promise((resolve, reject) => {
+    port.onmessage = e => resolve(e.data);
+    port.onerror = e => reject(e);
+  });
+}
+
+promise_test(async t => {
+  const run_result = 'worker_OK';
+  const blob_contents = 'self.postMessage("' + run_result + '");';
+  const blob = new Blob([blob_contents]);
+  const url = URL.createObjectURL(blob);
+
+  const worker = new Worker(url);
+  const reply = await message_from_port(worker);
+  assert_equals(reply, run_result);
+}, 'Creating a dedicated worker from a blob URL works.');
+
+promise_test(async t => {
+  const run_result = 'worker_OK';
+  const blob_contents = 'self.postMessage("' + run_result + '");';
+  const blob = new Blob([blob_contents]);
+  const url = URL.createObjectURL(blob);
+
+  const worker = new Worker(url);
+  URL.revokeObjectURL(url);
+  const reply = await message_from_port(worker);
+  assert_equals(reply, run_result);
+}, 'Creating a dedicated worker from a blob URL works immediately before revoking.');