chromium/src/third_party/blink/web_tests/http/tests/devtools/a11y-axe-core/memory/heap-profiler-a11y-test.js

// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

(async function() {
  TestRunner.addResult(`Tests accessibility in heap profiler using the axe-core linter.`);
  await TestRunner.loadModule('axe_core_test_runner');
  await TestRunner.loadModule('heap_profiler_test_runner');
  await TestRunner.showPanel('heap_profiler');
  await TestRunner.evaluateInPagePromise(`
      class MyTestClass {
        constructor() {
          this.z = new Uint32Array(10000);  // Pull the class to top.
          this.myFunction = () => 42;
        }
      };
      function* myGenerator() {
        yield 1;
      }
      class MyTestClass2 {}
      window.myTestClass = new MyTestClass();
      window.myTestGenerator = myGenerator();
      window.myTestClass2 = new MyTestClass2();`);

  await HeapProfilerTestRunner.startSamplingHeapProfiler();
  await TestRunner.evaluateInPagePromise(`
      function pageFunction() {
        (function () {
          window.holder = [];
          // Allocate few MBs of data.
          for (var i = 0; i < 1000; ++i)
            window.holder.push(new Array(1000).fill(42));
        })();
      }
      pageFunction();`);
  HeapProfilerTestRunner.stopSamplingHeapProfiler();

  await UI.viewManager.showView('heap_profiler');
  const widget = await UI.viewManager.view('heap_profiler').widget();
  await AxeCoreTestRunner.runValidation(widget.element);
  TestRunner.completeTest();
})();