Blitz - WPT: event-listeners.html

wpt / svg / animations / event-listeners.html
Enable JavaScript in test iframe
<!DOCTYPE html>
<title>Event handling of endEvent with various types of event listeners</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<svg height="0">
  <rect width="100" height="100" fill="blue">
    <animate attributeName="x" begin="0s" from="0" to="100" dur="5ms" end="5ms"
             id="targetWithAttributeHandlers"
             onend="gOnEndHandlerCallCount++"
             onendEvent="gNonexistentOnEndEventHandlerCallCount++"/>
    <animate attributeName="y" begin="0s" from="0" to="100" dur="5ms" end="5ms"
             id="targetWithIDLListeners"/>
    <animate attributeName="width" begin="0s" from="100" to="120" dur="5ms" end="5ms"
             id="targetWithRegularListeners"/>
    <set attributeName="visibility" begin="0s" end="10ms" from="visible" to="visible"
        id="timekeeper"/>
  </rect>
</svg>
<script>
  // This test checks how various types of event handlers / listeners react to an
  // animation end event.
  // The SVG spec does not define an event called "end" - the animation event is called "endEvent".
  // The SVG spec does not define an IDL property called "onendEvent", only one called "onend".
  // The SVG spec does not define an attribute called "onendEvent", only one called "onend".

  // Incremented in the "onend" attribute event handler.
  gOnEndHandlerCallCount = 0;
  // "onendEvent" is an invalid attribute name so this should never be incremented.
  gNonexistentOnEndEventHandlerCallCount = 0;
  // Incremented in the "onend" IDL property event listener.
  gOnEndListenerCallCount = 0;
  // "onendEvent" is an unrecognized property name so this should never be incremented.
  gNonexistentOnEndEventListenerCallCount = 0;
  // Incremented in the "endEvent" event listener.
  gEndEventListenerCallCount = 0;
  // Incremented in the "end" event listener. This should only happen for custom
  // events with the name "end" (which are not used in this test).
  gEndListenerCallCount = 0;

  let targetWithAttributeHandlers = document.getElementById("targetWithAttributeHandlers");
  let targetWithIDLListeners = document.getElementById("targetWithIDLListeners");
  targetWithIDLListeners.onend = () => { gOnEndListenerCallCount++; };
  targetWithIDLListeners.onendEvent = () => { gNonexistentOnEndEventListenerCallCount++; };
  let targetWithRegularListeners = document.getElementById("targetWithRegularListeners");
  targetWithRegularListeners.addEventListener("endEvent", () => { gEndEventListenerCallCount++; });
  targetWithRegularListeners.addEventListener("end", () => { gEndListenerCallCount++; });

  async_test(t => {
    let timekeeper = document.getElementById("timekeeper");
    timekeeper.addEventListener("endEvent", t.step_func(() => {
      requestAnimationFrame(t.step_func_done(() => {
        assert_equals(gOnEndHandlerCallCount, 1);
        assert_equals(gNonexistentOnEndEventHandlerCallCount, 0);
        assert_equals(gOnEndListenerCallCount, 1);
        assert_equals(gNonexistentOnEndEventListenerCallCount, 0);
        assert_equals(gEndEventListenerCallCount, 1);
        assert_equals(gEndListenerCallCount, 0);
      }));
    }));
  }, "When the animation ends, only the 'onend' attribute + IDL listeners and the 'endEvent' listener should be called");

</script>