chromium/src/third_party/blink/web_tests/regress/regress-1117258.html

<title>Regression tests for crbug.com/1117258</title>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>

<script>
async_test((test) => {
  function worker_code() {
      self.addEventListener('message', () => {
      let code = [
          0x0, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00
      ];
      let wasm_blob = URL.createObjectURL(
          new Blob([new Uint8Array(code)], { type: "application/wasm" })
      );
      let controller = new AbortController();
      let signal = controller.signal;
      Object.defineProperty(WebAssembly.Module.prototype, 'then', {
          get: function () {
              controller.abort();
          }
      });
      WebAssembly.compileStreaming(fetch(wasm_blob, { signal })).finally(
       () => self.postMessage('success')
      );
    });
  }
  let blob = new Blob(['(', worker_code.toString(), ')()']);
  let worker = new Worker(window.URL.createObjectURL(blob));
  worker.addEventListener('message', (message) => {
    assert_equals(message.data, 'success');
    test.done();
  });
  worker.postMessage('start');
}, 'Regression test for crbug.com/1117258');
</script>