96 lines
2.8 KiB
HTML
96 lines
2.8 KiB
HTML
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<!DOCTYPE html>
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<!--
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Copyright (C) 2016 The Android Open Source Project
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
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<title>gr-syntax-lib-loader</title>
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<script src="../../../bower_components/webcomponentsjs/webcomponents.min.js"></script>
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<script src="../../../bower_components/web-component-tester/browser.js"></script>
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<link rel="import" href="gr-syntax-lib-loader.html">
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<test-fixture id="basic">
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<template>
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<gr-syntax-lib-loader></gr-syntax-lib-loader>
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</template>
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</test-fixture>
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<script>
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suite('gr-syntax-lib-loader tests', function() {
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var element;
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var resolveLoad;
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var loadStub;
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setup(function() {
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element = fixture('basic');
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loadStub = sinon.stub(element, '_loadHLJS', function() {
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return new Promise(function(resolve) {
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resolveLoad = resolve;
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});
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});
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// Assert preconditions:
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assert.isFalse(element._state.loaded);
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assert.isFalse(element._state.loading);
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});
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teardown(function() {
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if (window.hljs) {
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delete window.hljs;
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}
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loadStub.restore();
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// Because the element state is a singleton, clean it up.
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element._state.loading = false;
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element._state.loaded = false;
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element._state.callbacks = [];
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});
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test('only load once', function(done) {
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var firstCallHandler = sinon.stub();
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element.get().then(firstCallHandler);
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// It should now be in the loading state.
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assert.isTrue(loadStub.called);
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assert.isTrue(element._state.loading);
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assert.isFalse(element._state.loaded);
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assert.isFalse(firstCallHandler.called);
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var secondCallHandler = sinon.stub();
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element.get().then(secondCallHandler);
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// No change in state.
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assert.isTrue(element._state.loading);
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assert.isFalse(element._state.loaded);
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assert.isFalse(firstCallHandler.called);
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assert.isFalse(secondCallHandler.called);
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// Now load the library.
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resolveLoad();
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flush(function() {
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// The state should be loaded and both handlers called.
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assert.isFalse(element._state.loading);
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assert.isTrue(element._state.loaded);
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assert.isTrue(firstCallHandler.called);
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assert.isTrue(secondCallHandler.called);
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done();
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});
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});
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});
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</script>
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