Update web-platform-tests to revision 26e8a76d7fbea0721468e791a325444ac9939a4f

tests/wpt/web-platform-tests/html/infrastructure/safe-passing-of-structured-data/transfer-errors.window.js

@@ -0,0 +1,47 @@
+function assert_transfer_error(transferList) {
+  assert_throws("DataCloneError", () => self.postMessage({ get whatever() { throw new Error("You should not have gotten to this point") } }, "*", transferList));
+}
+
+test(() => {
+  [self, self.document, new Image()].forEach(val => {
+    assert_transfer_error([val]);
+  });
+}, "Cannot transfer all objects");
+
+function transfer_tests(name, create) {
+  promise_test(async () => {
+    const transferable = await create();
+    assert_transfer_error([transferable, transferable]);
+  }, `Cannot transfer the same ${name} twice`);
+
+  promise_test(async () => {
+    const transferable = await create();
+    self.postMessage(null, "*", [transferable]);
+    assert_throws("DataCloneError", () => self.postMessage(null, "*", [transferable]));
+  }, `Serialize should make the ${name} detached, so it cannot be transferred again`);
+
+  promise_test(async () => {
+    const transferable = await create(),
+          customError = new Error("hi");
+    self.postMessage(null, "*", [transferable]);
+    assert_throws(customError, () => self.postMessage({ get whatever() { throw customError } }, "*", [transferable]));
+  }, `Serialize should throw before a detached ${name} is found`);
+
+  promise_test(async () => {
+    const transferable = await create();
+    let seen = false;
+    const message = {
+      get a() {
+        self.postMessage(null, '*', [transferable]);
+        seen = true;
+      }
+    };
+    assert_throws("DataCloneError", () => self.postMessage(message, "*", [transferable]));
+    assert_true(seen);
+  }, `Cannot transfer ${name} detached while the message was serialized`);
+}
+
+transfer_tests("ArrayBuffer", () => new ArrayBuffer(1));
+transfer_tests("MessagePort", () => new MessageChannel().port1);
+transfer_tests("ImageBitmap", () => self.createImageBitmap(document.createElement("canvas")));
+transfer_tests("OffscreenCanvas", () => new OffscreenCanvas(1, 1));