systrace/catapult/third_party/polymer/components/iron-dropdown/test/iron-dropdown-scroll-manager.html - platform/prebuilts/fullsdk-darwin/platform-tools - Git at Google

 <!doctype html>
 <!--
 @license
 Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
 This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
 The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
 Code distributed by Google as part of the polymer project is also
 subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
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 <html>

 <head>
   <meta charset="UTF-8">
   <title>iron-dropdown-scroll-manager tests</title>
   <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0">

   <script src="../../webcomponentsjs/webcomponents-lite.js"></script>
   <script src="../../web-component-tester/browser.js"></script>
   <script src="../../test-fixture/test-fixture-mocha.js"></script>
   <script src="../../iron-test-helpers/mock-interactions.js"></script>

   <link rel="import" href="../iron-dropdown-scroll-manager.html">
   <link rel="import" href="../../test-fixture/test-fixture.html">
   <link rel="import" href="x-scrollable-element.html">
 </head>

 <body>

   <test-fixture id="DOMSubtree">
     <template>
       <x-scrollable-element id="Parent"></x-scrollable-element>
     </template>
   </test-fixture>
   <script>

     suite('IronDropdownScrollManager', function() {
       var parent;
       var childOne;
       var childTwo;
       var grandChildOne;
       var grandChildTwo;
       var ancestor;

       setup(function() {
         parent = fixture('DOMSubtree');
         childOne = parent.$$('#ChildOne');
         childTwo = parent.$$('#ChildTwo');
         grandChildOne = parent.$$('#GrandchildOne');
         grandChildTwo = parent.$$('#GrandchildTwo');
         ancestor = document.body;
       });

       suite('constraining scroll in the DOM', function() {
         setup(function() {
           Polymer.IronDropdownScrollManager.pushScrollLock(childOne);
         });

         teardown(function() {
           Polymer.IronDropdownScrollManager.removeScrollLock(childOne);
         });

         test('recognizes sibling as locked', function() {
           expect(Polymer.IronDropdownScrollManager.elementIsScrollLocked(childTwo))
             .to.be.equal(true);
         });

         test('recognizes neice as locked', function() {
           expect(Polymer.IronDropdownScrollManager.elementIsScrollLocked(grandChildTwo))
             .to.be.equal(true);
         });

         test('recognizes parent as locked', function() {
           expect(Polymer.IronDropdownScrollManager.elementIsScrollLocked(parent))
             .to.be.equal(true);
         });

         test('recognizes ancestor as locked', function() {
           expect(Polymer.IronDropdownScrollManager.elementIsScrollLocked(ancestor))
             .to.be.equal(true);
         });

         test('recognizes locking child as unlocked', function() {
           expect(Polymer.IronDropdownScrollManager.elementIsScrollLocked(childOne))
             .to.be.equal(false);
         });

         test('recognizes descendant of locking child as unlocked', function() {
           expect(Polymer.IronDropdownScrollManager.elementIsScrollLocked(grandChildOne))
             .to.be.equal(false);
         });

         test('unlocks locked elements when there are no locking elements', function() {
           Polymer.IronDropdownScrollManager.removeScrollLock(childOne);

           expect(Polymer.IronDropdownScrollManager.elementIsScrollLocked(parent))
             .to.be.equal(false);
         });

         suite('various scroll events', function() {
           var scrollEvents;
           var events;

           setup(function() {
             scrollEvents = [
               'wheel',
               'mousewheel',
               'DOMMouseScroll',
               'touchmove'
             ];

             events = scrollEvents.map(function(scrollEvent) {
               var event = new CustomEvent(scrollEvent, {
                 bubbles: true,
                 cancelable: true
               });
               event.deltaX = 0;
               event.deltaY = 10;
               return event;
             });
           });

           test('prevents wheel events from locked elements', function() {
             events.forEach(function(event) {
               childTwo.dispatchEvent(event);
               expect(event.defaultPrevented).to.be.eql(true);
             });
           });

           test('allows wheel events when there are no locking elements', function() {
             Polymer.IronDropdownScrollManager.removeScrollLock(childOne);
             events.forEach(function(event) {
               childTwo.dispatchEvent(event);
               expect(event.defaultPrevented).to.be.eql(false);
             });
           });

           test('allows wheel events from unlocked elements', function() {
             events.forEach(function(event) {
               childOne.dispatchEvent(event);
               expect(event.defaultPrevented).to.be.eql(false);
             });
           });

           test('touchstart is prevented if dispatched by an element outside the locking element', function() {
             var event = new CustomEvent('touchstart', {
               bubbles: true,
               cancelable: true
             });
             childTwo.dispatchEvent(event);
             expect(event.defaultPrevented).to.be.eql(true);
           });

           test('touchstart is not prevented if dispatched by an element inside the locking element', function() {
             var event = new CustomEvent('touchstart', {
               bubbles: true,
               cancelable: true
             });
             grandChildOne.dispatchEvent(event);
             expect(event.defaultPrevented).to.be.eql(false);
           });

           test('arrow keyboard events not prevented by manager', function() {
             // Even if these events might cause scrolling, they should not be
             // prevented because they might cause a11y issues (e.g. arrow keys
             // used for navigating the content). iron-dropdown is capable of
             // restoring the scroll position of the document if necessary.
             var left = MockInteractions.keyboardEventFor('keydown', 37);
             var up = MockInteractions.keyboardEventFor('keydown', 38);
             var right = MockInteractions.keyboardEventFor('keydown', 39);
             var down = MockInteractions.keyboardEventFor('keydown', 40);
             grandChildOne.dispatchEvent(left);
             grandChildOne.dispatchEvent(up);
             grandChildOne.dispatchEvent(right);
             grandChildOne.dispatchEvent(down);
             expect(left.defaultPrevented).to.be.eql(false);
             expect(up.defaultPrevented).to.be.eql(false);
             expect(right.defaultPrevented).to.be.eql(false);
             expect(down.defaultPrevented).to.be.eql(false);
           });
         });
       });
     });
   </script>
 </body>

 </html>
	<!doctype html>
	<!--
	@license
	Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
	This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
	The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
	The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
	Code distributed by Google as part of the polymer project is also
	subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
	-->
	<html>

	<head>
	<meta charset="UTF-8">
	<title>iron-dropdown-scroll-manager tests</title>
	<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0">

	<script src="../../webcomponentsjs/webcomponents-lite.js"></script>
	<script src="../../web-component-tester/browser.js"></script>
	<script src="../../test-fixture/test-fixture-mocha.js"></script>
	<script src="../../iron-test-helpers/mock-interactions.js"></script>

	<link rel="import" href="../iron-dropdown-scroll-manager.html">
	<link rel="import" href="../../test-fixture/test-fixture.html">
	<link rel="import" href="x-scrollable-element.html">
	</head>

	<body>

	<test-fixture id="DOMSubtree">
	<template>
	<x-scrollable-element id="Parent"></x-scrollable-element>
	</template>
	</test-fixture>
	<script>

	suite('IronDropdownScrollManager', function() {
	var parent;
	var childOne;
	var childTwo;
	var grandChildOne;
	var grandChildTwo;
	var ancestor;

	setup(function() {
	parent = fixture('DOMSubtree');
	childOne = parent.$$('#ChildOne');
	childTwo = parent.$$('#ChildTwo');
	grandChildOne = parent.$$('#GrandchildOne');
	grandChildTwo = parent.$$('#GrandchildTwo');
	ancestor = document.body;
	});

	suite('constraining scroll in the DOM', function() {
	setup(function() {
	Polymer.IronDropdownScrollManager.pushScrollLock(childOne);
	});

	teardown(function() {
	Polymer.IronDropdownScrollManager.removeScrollLock(childOne);
	});

	test('recognizes sibling as locked', function() {
	expect(Polymer.IronDropdownScrollManager.elementIsScrollLocked(childTwo))
	.to.be.equal(true);
	});

	test('recognizes neice as locked', function() {
	expect(Polymer.IronDropdownScrollManager.elementIsScrollLocked(grandChildTwo))
	.to.be.equal(true);
	});

	test('recognizes parent as locked', function() {
	expect(Polymer.IronDropdownScrollManager.elementIsScrollLocked(parent))
	.to.be.equal(true);
	});

	test('recognizes ancestor as locked', function() {
	expect(Polymer.IronDropdownScrollManager.elementIsScrollLocked(ancestor))
	.to.be.equal(true);
	});

	test('recognizes locking child as unlocked', function() {
	expect(Polymer.IronDropdownScrollManager.elementIsScrollLocked(childOne))
	.to.be.equal(false);
	});

	test('recognizes descendant of locking child as unlocked', function() {
	expect(Polymer.IronDropdownScrollManager.elementIsScrollLocked(grandChildOne))
	.to.be.equal(false);
	});

	test('unlocks locked elements when there are no locking elements', function() {
	Polymer.IronDropdownScrollManager.removeScrollLock(childOne);

	expect(Polymer.IronDropdownScrollManager.elementIsScrollLocked(parent))
	.to.be.equal(false);
	});

	suite('various scroll events', function() {
	var scrollEvents;
	var events;

	setup(function() {
	scrollEvents = [
	'wheel',
	'mousewheel',
	'DOMMouseScroll',
	'touchmove'
	];

	events = scrollEvents.map(function(scrollEvent) {
	var event = new CustomEvent(scrollEvent, {
	bubbles: true,
	cancelable: true
	});
	event.deltaX = 0;
	event.deltaY = 10;
	return event;
	});
	});

	test('prevents wheel events from locked elements', function() {
	events.forEach(function(event) {
	childTwo.dispatchEvent(event);
	expect(event.defaultPrevented).to.be.eql(true);
	});
	});

	test('allows wheel events when there are no locking elements', function() {
	Polymer.IronDropdownScrollManager.removeScrollLock(childOne);
	events.forEach(function(event) {
	childTwo.dispatchEvent(event);
	expect(event.defaultPrevented).to.be.eql(false);
	});
	});

	test('allows wheel events from unlocked elements', function() {
	events.forEach(function(event) {
	childOne.dispatchEvent(event);
	expect(event.defaultPrevented).to.be.eql(false);
	});
	});

	test('touchstart is prevented if dispatched by an element outside the locking element', function() {
	var event = new CustomEvent('touchstart', {
	bubbles: true,
	cancelable: true
	});
	childTwo.dispatchEvent(event);
	expect(event.defaultPrevented).to.be.eql(true);
	});

	test('touchstart is not prevented if dispatched by an element inside the locking element', function() {
	var event = new CustomEvent('touchstart', {
	bubbles: true,
	cancelable: true
	});
	grandChildOne.dispatchEvent(event);
	expect(event.defaultPrevented).to.be.eql(false);
	});

	test('arrow keyboard events not prevented by manager', function() {
	// Even if these events might cause scrolling, they should not be
	// prevented because they might cause a11y issues (e.g. arrow keys
	// used for navigating the content). iron-dropdown is capable of
	// restoring the scroll position of the document if necessary.
	var left = MockInteractions.keyboardEventFor('keydown', 37);
	var up = MockInteractions.keyboardEventFor('keydown', 38);
	var right = MockInteractions.keyboardEventFor('keydown', 39);
	var down = MockInteractions.keyboardEventFor('keydown', 40);
	grandChildOne.dispatchEvent(left);
	grandChildOne.dispatchEvent(up);
	grandChildOne.dispatchEvent(right);
	grandChildOne.dispatchEvent(down);
	expect(left.defaultPrevented).to.be.eql(false);
	expect(up.defaultPrevented).to.be.eql(false);
	expect(right.defaultPrevented).to.be.eql(false);
	expect(down.defaultPrevented).to.be.eql(false);
	});
	});
	});
	});
	</script>
	</body>

	</html>