src/third_party/web_platform_tests/html/semantics/forms/the-button-element/button-events.html - cobalt - Git at Google

 <!DOCTYPE html>
 <meta charset="utf-8">
 <title>HTML Test: Button - events</title>
 <link rel="author" title="Intel" href="http://www.intel.com/">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-button-element">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <div id="log"></div>
 <form name="fm1" style="display:none">
   <button id="btn">BUTTON</button>
   <button id="menu_btn" type="menu" menu="menu">MENU BUTTON</button>
   <menu id="menu" label="MENU">
     <li>Menu item</li>
   </menu>
 </form>
 <script>

 var btn = document.getElementById("btn"),
     menu_btn = document.getElementById("menu_btn"),
     t1 = async_test("The submit event must be fired when click a button in submit status"),
     t2 = async_test("The reset event must be fired when click a button in reset status"),
     t3 = async_test("The show event must be fired when click a button in menu status");

 document.forms.fm1.onsubmit = t1.step_func(function (evt) {
   evt.preventDefault();
   assert_true(evt.isTrusted, "The isTrusted attribute of the submit event shoud be true.");
   assert_true(evt.bubbles, "The bubbles attribute of the submit event shoud be true.");
   assert_true(evt.cancelable, "The cancelable attribute of the submit event shoud be true.");
   assert_true(evt instanceof Event, "The submit event is an instance of Event interface.");
   t1.done();
 });

 document.forms.fm1.onreset = t2.step_func(function (evt) {
   assert_true(evt.isTrusted, "The isTrusted attribute of the reset event shoud be true.");
   assert_true(evt.bubbles, "The bubbles attribute of the reset event shoud be true.");
   assert_true(evt.cancelable, "The cancelable attribute of the reset event shoud be true.");
   assert_true(evt instanceof Event, "The reset event is an instance of Event interface.");
   t2.done();
 });

 document.getElementById("menu").onshow = t3.step_func(function (evt) {
   assert_true(evt.isTrusted, "The isTrusted attribute of the show event shoud be true.");
   assert_equals(evt.relatedTarget, menu_btn, "The relatedTarget attribute should be initialized to the related button element.");
   assert_true(evt.cancelable, "The cancelable attribute of the show event shoud be true.");
   assert_true(evt instanceof RelatedEvent, "The show event is an instance of RelatedEvent interface.");
   t3.done();
 });

 t1.step(function () {
   btn.type = "submit";
   assert_equals(btn.type, "submit", "The button type should be 'submit'.");
   btn.click();
 });

 t2.step(function () {
   btn.type = "reset";
   assert_equals(btn.type, "reset", "The button type should be 'reset'.");
   btn.click();
 });

 t3.step(function () {
   assert_equals(menu_btn.type, "menu", "The button type should be 'menu'.");
   menu_btn.click();
 });

 </script>
	<!DOCTYPE html>
	<meta charset="utf-8">
	<title>HTML Test: Button - events</title>
	<link rel="author" title="Intel" href="http://www.intel.com/">
	<link rel="help" href="https://html.spec.whatwg.org/multipage/#the-button-element">
	<script src="/resources/testharness.js"></script>
	<script src="/resources/testharnessreport.js"></script>
	<div id="log"></div>
	<form name="fm1" style="display:none">
	<button id="btn">BUTTON</button>
	<button id="menu_btn" type="menu" menu="menu">MENU BUTTON</button>
	<menu id="menu" label="MENU">
	<li>Menu item</li>
	</menu>
	</form>
	<script>

	var btn = document.getElementById("btn"),
	menu_btn = document.getElementById("menu_btn"),
	t1 = async_test("The submit event must be fired when click a button in submit status"),
	t2 = async_test("The reset event must be fired when click a button in reset status"),
	t3 = async_test("The show event must be fired when click a button in menu status");

	document.forms.fm1.onsubmit = t1.step_func(function (evt) {
	evt.preventDefault();
	assert_true(evt.isTrusted, "The isTrusted attribute of the submit event shoud be true.");
	assert_true(evt.bubbles, "The bubbles attribute of the submit event shoud be true.");
	assert_true(evt.cancelable, "The cancelable attribute of the submit event shoud be true.");
	assert_true(evt instanceof Event, "The submit event is an instance of Event interface.");
	t1.done();
	});

	document.forms.fm1.onreset = t2.step_func(function (evt) {
	assert_true(evt.isTrusted, "The isTrusted attribute of the reset event shoud be true.");
	assert_true(evt.bubbles, "The bubbles attribute of the reset event shoud be true.");
	assert_true(evt.cancelable, "The cancelable attribute of the reset event shoud be true.");
	assert_true(evt instanceof Event, "The reset event is an instance of Event interface.");
	t2.done();
	});

	document.getElementById("menu").onshow = t3.step_func(function (evt) {
	assert_true(evt.isTrusted, "The isTrusted attribute of the show event shoud be true.");
	assert_equals(evt.relatedTarget, menu_btn, "The relatedTarget attribute should be initialized to the related button element.");
	assert_true(evt.cancelable, "The cancelable attribute of the show event shoud be true.");
	assert_true(evt instanceof RelatedEvent, "The show event is an instance of RelatedEvent interface.");
	t3.done();
	});

	t1.step(function () {
	btn.type = "submit";
	assert_equals(btn.type, "submit", "The button type should be 'submit'.");
	btn.click();
	});

	t2.step(function () {
	btn.type = "reset";
	assert_equals(btn.type, "reset", "The button type should be 'reset'.");
	btn.click();
	});

	t3.step(function () {
	assert_equals(menu_btn.type, "menu", "The button type should be 'menu'.");
	menu_btn.click();
	});

	</script>