<!DOCTYPE html>
<html>
<head>
  <script src="/resources/testharness.js"></script>
  <script src="/resources/testharnessreport.js"></script>

  <script src="resources/profile-utils.js"></script>
</head>
<body>
  <script>
    promise_test(async t => {
      const profiler = await performance.profile({
        sampleInterval: 10,
        maxBufferSize: 2,
      });

      // Force 10 samples with a max buffer size of 2.
      for (let i = 0; i < 10; i++) {
        ProfileUtils.forceSample();
      }

      const trace = await profiler.stop();
      assert_equals(trace.samples.length, 2);
    }, 'max buffer size is not exceeded');
  </script>
</body>
</html>