1 files changed, 39 insertions, 0 deletions
diff --git a/dom/canvas/test/imagebitmap_structuredclone.js b/dom/canvas/test/imagebitmap_structuredclone.js
new file mode 100644
index 0000000000..2ebd4bedcf
--- /dev/null
+++ b/dom/canvas/test/imagebitmap_structuredclone.js
@@ -0,0 +1,39 @@
+function ok(expect, msg) {
+  postMessage({ type: "status", status: !!expect, msg });
+}
+
+onmessage = function (event) {
+  ok(!!event.data.bitmap1, "Get the 1st ImageBitmap from the main script.");
+  ok(!!event.data.bitmap2, "Get the 2nd ImageBitmap from the main script.");
+  ok(!!event.data.bitmap3, "Get the 3rd ImageBitmap from the main script.");
+
+  // send the first original ImageBitmap back to the main-thread
+  postMessage({ type: "bitmap1", bitmap: event.data.bitmap1 });
+
+  // create a new ImageBitmap from the 2nd original ImageBitmap
+  // and then send the newly created ImageBitmap back to the main-thread
+  var promise = createImageBitmap(event.data.bitmap2);
+  promise.then(
+    function (bitmap) {
+      ok(
+        true,
+        "Successfully create a new ImageBitmap from the 2nd original bitmap in worker."
+      );
+
+      // send the newly created ImageBitmap back to the main-thread
+      postMessage({ type: "bitmap2", bitmap });
+
+      // finish the test
+      postMessage({ type: "finish" });
+    },
+    function () {
+      ok(
+        false,
+        "Cannot create a new bitmap from the original bitmap in worker."
+      );
+    }
+  );
+
+  // send the third original ImageBitmap back to the main-thread
+  postMessage({ type: "bitmap3", bitmap: event.data.bitmap3 });
+};