constructor-allowed-to-start.html

Enable keyboard shortcuts

This WPT test may be referenced by the following Test IDs:
- /webaudio/the-audio-api/the-audiocontext-interface/constructor-allowed-to-start.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>AudioContext state around "allowed to start" in constructor</title>

<link rel=help href=https://webaudio.github.io/web-audio-api/#dom-audiocontext-audiocontext>

<script src=/resources/testharness.js></script>

<script src=/resources/testharnessreport.js></script>

<script src=/resources/testdriver.js></script>

<script src=/resources/testdriver-vendor.js></script>

<script>

setup({ single_test: true });

test_driver.bless("audio playback", () => {

  const ctx = new AudioContext();

  // Immediately after the constructor the state is "suspended" because the

  // control message to start processing has just been sent, but the state

  // should change soon.

  assert_equals(ctx.state, "suspended", "initial state");

  ctx.onstatechange = () => {

    assert_equals(ctx.state, "running", "state after statechange event");

    // Now create another context and ensure it starts out in the "suspended"

    // state too, ensuring it's not synchronously "running".

    const ctx2 = new AudioContext();

    assert_equals(ctx2.state, "suspended", "initial state of 2nd context");

    done();

};

});

</script>