1 files changed, 90 insertions, 0 deletions
diff --git a/testing/web-platform/tests/dom/events/event-global-extra.window.js b/testing/web-platform/tests/dom/events/event-global-extra.window.js
new file mode 100644
index 0000000000..0f14961c40
--- /dev/null
+++ b/testing/web-platform/tests/dom/events/event-global-extra.window.js
@@ -0,0 +1,90 @@
+const otherWindow = document.body.appendChild(document.createElement("iframe")).contentWindow;
+
+["EventTarget", "XMLHttpRequest"].forEach(constructorName => {
+  async_test(t => {
+    const eventTarget = new otherWindow[constructorName]();
+    eventTarget.addEventListener("hi", t.step_func_done(e => {
+      assert_equals(otherWindow.event, undefined);
+      assert_equals(e, window.event);
+    }));
+    eventTarget.dispatchEvent(new Event("hi"));
+  }, "window.event for constructors from another global: " + constructorName);
+});
+
+// XXX: It would be good to test a subclass of EventTarget once we sort out
+// https://github.com/heycam/webidl/issues/540
+
+async_test(t => {
+  const element = document.body.appendChild(otherWindow.document.createElement("meh"));
+  element.addEventListener("yo", t.step_func_done(e => {
+    assert_equals(e, window.event);
+  }));
+  element.dispatchEvent(new Event("yo"));
+}, "window.event and element from another document");
+
+async_test(t => {
+  const doc = otherWindow.document,
+        element = doc.body.appendChild(doc.createElement("meh")),
+        child = element.appendChild(doc.createElement("bleh"));
+  element.addEventListener("yoyo", t.step_func(e => {
+    document.body.appendChild(element);
+    assert_equals(element.ownerDocument, document);
+    assert_equals(window.event, e);
+    assert_equals(otherWindow.event, undefined);
+  }), true);
+  element.addEventListener("yoyo", t.step_func(e => {
+    assert_equals(element.ownerDocument, document);
+    assert_equals(window.event, e);
+    assert_equals(otherWindow.event, undefined);
+  }), true);
+  child.addEventListener("yoyo", t.step_func_done(e => {
+    assert_equals(child.ownerDocument, document);
+    assert_equals(window.event, e);
+    assert_equals(otherWindow.event, undefined);
+  }));
+  child.dispatchEvent(new Event("yoyo"));
+}, "window.event and moving an element post-dispatch");
+
+test(t => {
+  const host = document.createElement("div"),
+        shadow = host.attachShadow({ mode: "open" }),
+        child = shadow.appendChild(document.createElement("trala")),
+        furtherChild = child.appendChild(document.createElement("waddup"));
+  let counter = 0;
+  host.addEventListener("hi", t.step_func(e => {
+    assert_equals(window.event, e);
+    assert_equals(counter++, 3);
+  }));
+  child.addEventListener("hi", t.step_func(e => {
+    assert_equals(window.event, undefined);
+    assert_equals(counter++, 2);
+  }));
+  furtherChild.addEventListener("hi", t.step_func(e => {
+    host.appendChild(child);
+    assert_equals(window.event, undefined);
+    assert_equals(counter++, 0);
+  }));
+  furtherChild.addEventListener("hi", t.step_func(e => {
+    assert_equals(window.event, undefined);
+    assert_equals(counter++, 1);
+  }));
+  furtherChild.dispatchEvent(new Event("hi", { composed: true, bubbles: true }));
+  assert_equals(counter, 4);
+}, "window.event should not be affected by nodes moving post-dispatch");
+
+async_test(t => {
+  const frame = document.body.appendChild(document.createElement("iframe"));
+  frame.src = "resources/event-global-extra-frame.html";
+  frame.onload = t.step_func_done((load_event) => {
+    const event = new Event("hi");
+    document.addEventListener("hi", frame.contentWindow.listener); // listener intentionally not wrapped in t.step_func
+    document.addEventListener("hi", t.step_func(e => {
+      assert_equals(event, e);
+      assert_equals(window.event, e);
+    }));
+    document.dispatchEvent(event);
+    assert_equals(frameState.event, event);
+    assert_equals(frameState.windowEvent, event);
+    assert_equals(frameState.parentEvent, load_event);
+  });
+}, "Listener from a different global");