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| 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 |
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| 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. |
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| |
| <meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes"> |
| <title>gr-syntax-lib-loader</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-syntax-lib-loader.html"> |
| |
| <script>void(0);</script> |
| |
| <test-fixture id="basic"> |
| <template> |
| <gr-syntax-lib-loader></gr-syntax-lib-loader> |
| </template> |
| </test-fixture> |
| |
| <script> |
| suite('gr-syntax-lib-loader tests', function() { |
| var element; |
| var resolveLoad; |
| var loadStub; |
| |
| setup(function() { |
| element = fixture('basic'); |
| |
| loadStub = sinon.stub(element, '_loadHLJS', function() { |
| return new Promise(function(resolve) { |
| resolveLoad = resolve; |
| }); |
| }); |
| |
| // Assert preconditions: |
| assert.isFalse(element._state.loaded); |
| assert.isFalse(element._state.loading); |
| }); |
| |
| teardown(function() { |
| if (window.hljs) { |
| delete window.hljs; |
| } |
| loadStub.restore(); |
| |
| // Because the element state is a singleton, clean it up. |
| element._state.loading = false; |
| element._state.loaded = false; |
| element._state.callbacks = []; |
| }); |
| |
| test('only load once', function(done) { |
| var firstCallHandler = sinon.stub(); |
| element.get().then(firstCallHandler); |
| |
| // It should now be in the loading state. |
| assert.isTrue(loadStub.called); |
| assert.isTrue(element._state.loading); |
| assert.isFalse(element._state.loaded); |
| assert.isFalse(firstCallHandler.called); |
| |
| var secondCallHandler = sinon.stub(); |
| element.get().then(secondCallHandler); |
| |
| // No change in state. |
| assert.isTrue(element._state.loading); |
| assert.isFalse(element._state.loaded); |
| assert.isFalse(firstCallHandler.called); |
| assert.isFalse(secondCallHandler.called); |
| |
| // Now load the library. |
| resolveLoad(); |
| flush(function() { |
| // The state should be loaded and both handlers called. |
| assert.isFalse(element._state.loading); |
| assert.isTrue(element._state.loaded); |
| assert.isTrue(firstCallHandler.called); |
| assert.isTrue(secondCallHandler.called); |
| done(); |
| }); |
| }); |
| }); |
| </script> |
