1 files changed, 58 insertions, 0 deletions
diff --git a/testing/web-platform/tests/streams/readable-byte-streams/non-transferable-buffers.any.js b/testing/web-platform/tests/streams/readable-byte-streams/non-transferable-buffers.any.js
new file mode 100644
index 0000000000..e8ea3c4f96
--- /dev/null
+++ b/testing/web-platform/tests/streams/readable-byte-streams/non-transferable-buffers.any.js
@@ -0,0 +1,58 @@
+// META: global=window,worker
+'use strict';
+
+promise_test(async t => {
+  const rs = new ReadableStream({
+    pull: t.unreached_func('pull() should not be called'),
+    type: 'bytes'
+  });
+
+  const reader = rs.getReader({ mode: 'byob' });
+  const memory = new WebAssembly.Memory({ initial: 1 });
+  const view = new Uint8Array(memory.buffer, 0, 1);
+  await promise_rejects_js(t, TypeError, reader.read(view));
+}, 'ReadableStream with byte source: read() with a non-transferable buffer');
+
+test(t => {
+  let controller;
+  const rs = new ReadableStream({
+    start(c) {
+      controller = c;
+    },
+    pull: t.unreached_func('pull() should not be called'),
+    type: 'bytes'
+  });
+
+  const memory = new WebAssembly.Memory({ initial: 1 });
+  const view = new Uint8Array(memory.buffer, 0, 1);
+  assert_throws_js(TypeError, () => controller.enqueue(view));
+}, 'ReadableStream with byte source: enqueue() with a non-transferable buffer');
+
+promise_test(async t => {
+  let byobRequest;
+  let resolvePullCalledPromise;
+  const pullCalledPromise = new Promise(resolve => {
+    resolvePullCalledPromise = resolve;
+  });
+  const rs = new ReadableStream({
+    pull(controller) {
+      byobRequest = controller.byobRequest;
+      resolvePullCalledPromise();
+    },
+    type: 'bytes'
+  });
+
+  const memory = new WebAssembly.Memory({ initial: 1 });
+  // Make sure the backing buffers of both views have the same length
+  const byobView = new Uint8Array(new ArrayBuffer(memory.buffer.byteLength), 0, 1);
+  const newView = new Uint8Array(memory.buffer, byobView.byteOffset, byobView.byteLength);
+
+  const reader = rs.getReader({ mode: 'byob' });
+  reader.read(byobView).then(
+    t.unreached_func('read() should not resolve'),
+    t.unreached_func('read() should not reject')
+  );
+  await pullCalledPromise;
+
+  assert_throws_js(TypeError, () => byobRequest.respondWithNewView(newView));
+}, 'ReadableStream with byte source: respondWithNewView() with a non-transferable buffer');