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<!DOCTYPE html>
<title>Custom events with the names "end" and "endEvent" and their effects on 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"
id="targetWithAttributeHandlers"
onend="gOnEndHandlerCallCount++"
onendEvent="gNonexistentOnEndEventHandlerCallCount++"/>
<animate attributeName="y" begin="0s" from="0" to="100"
id="targetWithIDLListeners"/>
<animate attributeName="width" begin="0s" from="100" to="120"
id="targetWithRegularListeners"/>
</rect>
</svg>
<script>
// This test checks how various types of event handlers / listeners react to custom
// events with the names "end" and "endEvent".
// 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 manually-created events with the name "end".
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++; });
test(t => {
targetWithAttributeHandlers.dispatchEvent(new Event("end"));
assert_equals(gOnEndHandlerCallCount, 0);
assert_equals(gNonexistentOnEndEventHandlerCallCount, 0);
targetWithIDLListeners.dispatchEvent(new Event("end"));
assert_equals(gOnEndListenerCallCount, 0);
assert_equals(gNonexistentOnEndEventListenerCallCount, 0);
targetWithRegularListeners.dispatchEvent(new Event("end"));
assert_equals(gEndEventListenerCallCount, 0);
assert_equals(gEndListenerCallCount, 1);
}, "custom events with the name 'end' should only call the event listener for the event 'end' and no attribute handlers or IDL listeners");
test(t => {
gOnEndHandlerCallCount = 0;
gNonexistentOnEndEventHandlerCallCount = 0;
gOnEndListenerCallCount = 0;
gNonexistentOnEndEventListenerCallCount = 0;
gEndEventListenerCallCount = 0;
gEndListenerCallCount = 0;
targetWithAttributeHandlers.dispatchEvent(new Event("endEvent"));
assert_equals(gOnEndHandlerCallCount, 1);
assert_equals(gNonexistentOnEndEventHandlerCallCount, 0);
targetWithIDLListeners.dispatchEvent(new Event("endEvent"));
assert_equals(gOnEndListenerCallCount, 1);
assert_equals(gNonexistentOnEndEventListenerCallCount, 0);
targetWithRegularListeners.dispatchEvent(new Event("endEvent"));
assert_equals(gEndEventListenerCallCount, 1);
assert_equals(gEndListenerCallCount, 0);
}, "custom events with the name 'endEvent' should call 'onend' attribute handlers and IDL property listeners, and 'endEvent' listeners");
</script>
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