polygerrit-ui/app/elements/shared/gr-cursor-manager/gr-cursor-manager_test.html - gerrit - Git at Google

 <!DOCTYPE html>
 <!--
 Copyright (C) 2016 The Android Open Source Project

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 -->

 <meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
 <title>gr-cursor-manager</title>

 <script src="../../../bower_components/webcomponentsjs/webcomponents.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>

 <link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-cursor-manager.html">

 <test-fixture id="basic">
   <template>
     <gr-cursor-manager
         cursor-stop-selector="li"
         cursor-target-class="targeted"></gr-cursor-manager>
     <ul>
       <li>A</li>
       <li>B</li>
       <li>C</li>
       <li>D</li>
     </ul>
   </template>
 </test-fixture>

 <script>
   suite('gr-cursor-manager tests', function() {
     var element;
     var list;

     setup(function() {
       var fixtureElements = fixture('basic');
       element = fixtureElements[0];
       list = fixtureElements[1];
     });

     test('core cursor functionality', function() {
       // The element is initialized into the proper state.
       assert.isArray(element.stops);
       assert.equal(element.stops.length, 0);
       assert.equal(element.index, -1);
       assert.isNotOk(element.target);

       // Initialize the cursor with its stops.
       element.stops = list.querySelectorAll('li');

       // It should have the stops but it should not be targeting any of them.
       assert.isNotNull(element.stops);
       assert.equal(element.stops.length, 4);
       assert.equal(element.index, -1);
       assert.isNotOk(element.target);

       // Select the third stop.
       element.setCursor(list.children[2]);

       // It should update its internal state and update the element's class.
       assert.equal(element.index, 2);
       assert.equal(element.target, list.children[2]);
       assert.isTrue(list.children[2].classList.contains('targeted'));
       assert.isFalse(element.isAtStart());
       assert.isFalse(element.isAtEnd());

       // Progress the cursor.
       element.next();

       // Confirm that the next stop is selected and that the previous stop is
       // unselected.
       assert.equal(element.index, 3);
       assert.equal(element.target, list.children[3]);
       assert.isTrue(element.isAtEnd());
       assert.isFalse(list.children[2].classList.contains('targeted'));
       assert.isTrue(list.children[3].classList.contains('targeted'));

       // Progress the cursor.
       element.next();

       // We should still be at the end.
       assert.equal(element.index, 3);
       assert.equal(element.target, list.children[3]);
       assert.isTrue(element.isAtEnd());

       // Wind the cursor all the way back to the first stop.
       element.previous();
       element.previous();
       element.previous();

       // The element state should reflect the end of the list.
       assert.equal(element.index, 0);
       assert.equal(element.target, list.children[0]);
       assert.isTrue(element.isAtStart());
       assert.isTrue(list.children[0].classList.contains('targeted'));

       var newLi = document.createElement('li');
       newLi.textContent = 'Z';
       list.insertBefore(newLi, list.children[0]);
       element.stops = list.querySelectorAll('li');

       assert.equal(element.index, 1);

       // De-select all targets.
       element.unsetCursor();

       // There should now be no cursor target.
       assert.isFalse(list.children[1].classList.contains('targeted'));
       assert.isNotOk(element.target);
       assert.equal(element.index, -1);
     });
   });
 </script>
	<!DOCTYPE html>
	<!--
	Copyright (C) 2016 The Android Open Source Project

	Licensed under the Apache License, Version 2.0 (the "License");
	you may not use this file except in compliance with the License.
	You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

	Unless required by applicable law or agreed to in writing, software
	distributed under the License is distributed on an "AS IS" BASIS,
	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	See the License for the specific language governing permissions and
	limitations under the License.
	-->

	<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
	<title>gr-cursor-manager</title>

	<script src="../../../bower_components/webcomponentsjs/webcomponents.min.js"></script>
	<script src="../../../bower_components/web-component-tester/browser.js"></script>

	<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
	<link rel="import" href="gr-cursor-manager.html">

	<test-fixture id="basic">
	<template>
	<gr-cursor-manager
	cursor-stop-selector="li"
	cursor-target-class="targeted"></gr-cursor-manager>
	<ul>
	<li>A</li>
	<li>B</li>
	<li>C</li>
	<li>D</li>
	</ul>
	</template>
	</test-fixture>

	<script>
	suite('gr-cursor-manager tests', function() {
	var element;
	var list;

	setup(function() {
	var fixtureElements = fixture('basic');
	element = fixtureElements[0];
	list = fixtureElements[1];
	});

	test('core cursor functionality', function() {
	// The element is initialized into the proper state.
	assert.isArray(element.stops);
	assert.equal(element.stops.length, 0);
	assert.equal(element.index, -1);
	assert.isNotOk(element.target);

	// Initialize the cursor with its stops.
	element.stops = list.querySelectorAll('li');

	// It should have the stops but it should not be targeting any of them.
	assert.isNotNull(element.stops);
	assert.equal(element.stops.length, 4);
	assert.equal(element.index, -1);
	assert.isNotOk(element.target);

	// Select the third stop.
	element.setCursor(list.children[2]);

	// It should update its internal state and update the element's class.
	assert.equal(element.index, 2);
	assert.equal(element.target, list.children[2]);
	assert.isTrue(list.children[2].classList.contains('targeted'));
	assert.isFalse(element.isAtStart());
	assert.isFalse(element.isAtEnd());

	// Progress the cursor.
	element.next();

	// Confirm that the next stop is selected and that the previous stop is
	// unselected.
	assert.equal(element.index, 3);
	assert.equal(element.target, list.children[3]);
	assert.isTrue(element.isAtEnd());
	assert.isFalse(list.children[2].classList.contains('targeted'));
	assert.isTrue(list.children[3].classList.contains('targeted'));

	// Progress the cursor.
	element.next();

	// We should still be at the end.
	assert.equal(element.index, 3);
	assert.equal(element.target, list.children[3]);
	assert.isTrue(element.isAtEnd());

	// Wind the cursor all the way back to the first stop.
	element.previous();
	element.previous();
	element.previous();

	// The element state should reflect the end of the list.
	assert.equal(element.index, 0);
	assert.equal(element.target, list.children[0]);
	assert.isTrue(element.isAtStart());
	assert.isTrue(list.children[0].classList.contains('targeted'));

	var newLi = document.createElement('li');
	newLi.textContent = 'Z';
	list.insertBefore(newLi, list.children[0]);
	element.stops = list.querySelectorAll('li');

	assert.equal(element.index, 1);

	// De-select all targets.
	element.unsetCursor();

	// There should now be no cursor target.
	assert.isFalse(list.children[1].classList.contains('targeted'));
	assert.isNotOk(element.target);
	assert.equal(element.index, -1);
	});
	});
	</script>