1 files changed, 94 insertions, 0 deletions
diff --git a/cli/tests/unit/event_test.ts b/cli/tests/unit/event_test.ts
new file mode 100644
index 000000000..ce3076e58
--- /dev/null
+++ b/cli/tests/unit/event_test.ts
@@ -0,0 +1,94 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+import { unitTest, assertEquals, assert } from "./test_util.ts";
+
+unitTest(function eventInitializedWithType(): void {
+  const type = "click";
+  const event = new Event(type);
+
+  assertEquals(event.isTrusted, false);
+  assertEquals(event.target, null);
+  assertEquals(event.currentTarget, null);
+  assertEquals(event.type, "click");
+  assertEquals(event.bubbles, false);
+  assertEquals(event.cancelable, false);
+});
+
+unitTest(function eventInitializedWithTypeAndDict(): void {
+  const init = "submit";
+  const eventInit = { bubbles: true, cancelable: true } as EventInit;
+  const event = new Event(init, eventInit);
+
+  assertEquals(event.isTrusted, false);
+  assertEquals(event.target, null);
+  assertEquals(event.currentTarget, null);
+  assertEquals(event.type, "submit");
+  assertEquals(event.bubbles, true);
+  assertEquals(event.cancelable, true);
+});
+
+unitTest(function eventComposedPathSuccess(): void {
+  const type = "click";
+  const event = new Event(type);
+  const composedPath = event.composedPath();
+
+  assertEquals(composedPath, []);
+});
+
+unitTest(function eventStopPropagationSuccess(): void {
+  const type = "click";
+  const event = new Event(type);
+
+  assertEquals(event.cancelBubble, false);
+  event.stopPropagation();
+  assertEquals(event.cancelBubble, true);
+});
+
+unitTest(function eventStopImmediatePropagationSuccess(): void {
+  const type = "click";
+  const event = new Event(type);
+
+  assertEquals(event.cancelBubble, false);
+  event.stopImmediatePropagation();
+  assertEquals(event.cancelBubble, true);
+});
+
+unitTest(function eventPreventDefaultSuccess(): void {
+  const type = "click";
+  const event = new Event(type);
+
+  assertEquals(event.defaultPrevented, false);
+  event.preventDefault();
+  assertEquals(event.defaultPrevented, false);
+
+  const eventInit = { bubbles: true, cancelable: true } as EventInit;
+  const cancelableEvent = new Event(type, eventInit);
+  assertEquals(cancelableEvent.defaultPrevented, false);
+  cancelableEvent.preventDefault();
+  assertEquals(cancelableEvent.defaultPrevented, true);
+});
+
+unitTest(function eventInitializedWithNonStringType(): void {
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  const type: any = undefined;
+  const event = new Event(type);
+
+  assertEquals(event.isTrusted, false);
+  assertEquals(event.target, null);
+  assertEquals(event.currentTarget, null);
+  assertEquals(event.type, "undefined");
+  assertEquals(event.bubbles, false);
+  assertEquals(event.cancelable, false);
+});
+
+// ref https://github.com/web-platform-tests/wpt/blob/master/dom/events/Event-isTrusted.any.js
+unitTest(function eventIsTrusted(): void {
+  const desc1 = Object.getOwnPropertyDescriptor(new Event("x"), "isTrusted");
+  assert(desc1);
+  assertEquals(typeof desc1.get, "function");
+
+  const desc2 = Object.getOwnPropertyDescriptor(new Event("x"), "isTrusted");
+  assert(desc2);
+  assertEquals(typeof desc2!.get, "function");
+
+  assertEquals(desc1!.get, desc2!.get);
+});