1 files changed, 22 insertions, 0 deletions
diff --git a/testing/web-platform/tests/service-workers/service-worker/resources/create-blob-url-worker.js b/testing/web-platform/tests/service-workers/service-worker/resources/create-blob-url-worker.js
new file mode 100644
index 0000000000..57e4882c24
--- /dev/null
+++ b/testing/web-platform/tests/service-workers/service-worker/resources/create-blob-url-worker.js
@@ -0,0 +1,22 @@
+const childWorkerScript = `
+  self.onmessage = async (e) => {
+    const response = await fetch(e.data);
+    const text = await response.text();
+    self.postMessage(text);
+  };
+`;
+const blob = new Blob([childWorkerScript], { type: 'text/javascript' });
+const blobUrl = URL.createObjectURL(blob);
+const childWorker = new Worker(blobUrl);
+
+// When a message comes from the parent frame, sends a resource url to the child
+// worker.
+self.onmessage = (e) => {
+  childWorker.postMessage(e.data);
+};
+
+// When a message comes from the child worker, sends a content of fetch() to the
+// parent frame.
+childWorker.onmessage = (e) => {
+  self.postMessage(e.data);
+};