Re: [whatwg/streams] TransformStream: Verify behaviour of abort() during write() (#817)

domenic approved this pull request.



> @@ -308,4 +308,19 @@ promise_test(t => {
   });
 }, 'erroring during write with backpressure should result in the write failing');
 
+promise_test(t => {
+  const ts = new TransformStream({}, undefined, { highWaterMark: 0 });
+  return delay(0).then(() => {
+    const writer = ts.writable.getWriter();
+    // write should start synchronously
+    const writePromise = writer.write(0);
+    const abortPromise = writer.abort();
+    return promise_rejects(t, new TypeError(), ts.readable.getReader().read(), 'read() should reject')

Why not one Promise.all covering all three at once?

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