chromium/third_party/blink/web_tests/external/wpt/html/webappapis/scripting/events/inline-event-handler-ordering.html

<!doctype html>
<meta charset="utf-8">
<title>Inline event handlers retain their ordering even when invalid</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
setup({ allow_uncaught_exception: true });
var events = [];

test(function() {
  events = [];
  var e = document.createElement("div");
  document.body.appendChild(e);
  e.addEventListener("click", function() { events.push("ONE") });
  e.setAttribute("onclick", "window.open(");
  e.addEventListener("click", function() { events.push("THREE") });
  // Try to compile the event handler.
  e.onclick;
  e.setAttribute("onclick", "events.push('TWO')");
  e.dispatchEvent(new Event("click"));
  var expected_events = ["ONE", "TWO", "THREE"];
  assert_array_equals(events, expected_events);
}, "Inline event handlers retain their ordering when invalid and force-compiled");

test(function() {
  events = [];
  var e = document.createElement("div");
  document.body.appendChild(e);
  e.addEventListener("click", function() { events.push("ONE") });
  e.setAttribute("onclick", "window.open(");
  e.addEventListener("click", function() { events.push("THREE") });
  e.dispatchEvent(new Event("click"));
  e.setAttribute("onclick", "events.push('TWO')");
  e.dispatchEvent(new Event("click"));
  var expected_events = ["ONE", "THREE", "ONE", "TWO", "THREE"];
  assert_array_equals(events, expected_events);
}, "Inline event handlers retain their ordering when invalid and force-compiled via dispatch");

test(function() {
  events = [];
  var e = document.createElement("div");
  document.body.appendChild(e);
  e.addEventListener("click", function() { events.push("ONE") });
  e.setAttribute("onclick", "window.open(");
  e.addEventListener("click", function() { events.push("THREE") });
  e.setAttribute("onclick", "events.push('TWO')");
  e.dispatchEvent(new Event("click"));
  var expected_events = ["ONE", "TWO", "THREE"];
  assert_array_equals(events, expected_events);
}, "Inline event handlers retain their ordering when invalid and lazy-compiled");
</script>
</body>