| <!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-header</title> |
| |
| <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script> |
| <script src="../../../bower_components/web-component-tester/browser.js"></script> |
| |
| <link rel="import" href="gr-header.html"> |
| |
| <test-fixture id="basic"> |
| <template> |
| <gr-header> |
| <div style="height: 100px"></div> |
| </gr-header> |
| </template> |
| </test-fixture> |
| |
| <script> |
| suite('gr-header', function() { |
| var element; |
| var sandbox; |
| |
| setup(function() { |
| element = fixture('basic'); |
| sandbox = sinon.sandbox.create(); |
| }); |
| |
| teardown(function() { |
| sandbox.restore(); |
| }); |
| |
| test('header is the height of the content', function() { |
| assert.equal(element.getBoundingClientRect().height, 100); |
| }); |
| |
| test('scroll triggers _handleScroll', function() { |
| sandbox.stub(element, '_handleScroll'); |
| window.dispatchEvent(new CustomEvent('scroll')); |
| assert.isTrue(element._handleScroll.called); |
| }); |
| |
| suite('_handleScroll', function() { |
| |
| var getHeaderTop = function() { |
| return element.$.header.style.top; |
| }; |
| |
| var emulateScrollY = function(distance) { |
| element._getScrollY.returns(distance); |
| element._handleScroll(); |
| element.flushDebouncer('scroll'); |
| }; |
| |
| setup(function() { |
| element._headerTopInitial = 10; |
| sandbox.stub(element, '_getScrollY').returns(0); |
| }); |
| |
| test('is debounced', function() { |
| sandbox.stub(element, 'debounce'); |
| element._handleScroll(); |
| assert.isTrue(element.debounce.called); |
| }); |
| |
| test('scrolls header along with document', function() { |
| emulateScrollY(20); |
| assert.equal(getHeaderTop(), '-10px'); |
| }); |
| |
| test('does not stick to the top by default', function() { |
| emulateScrollY(150); |
| assert.equal(getHeaderTop(), '-140px'); |
| }); |
| |
| test('sticks to the top if enabled', function() { |
| element.keepOnScroll = true; |
| emulateScrollY(120); |
| assert.equal(getHeaderTop(), '0px'); |
| }); |
| }); |
| }); |
| </script> |
