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/**
* @license
* 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.
*/
import '../../../test/common-test-setup-karma.js';
import './gr-lib-loader.js';
const basicFixture = fixtureFromElement('gr-lib-loader');
suite('gr-lib-loader tests', () => {
let element;
let resolveLoad;
let loadStub;
setup(() => {
element = basicFixture.instantiate();
loadStub = sinon.stub(element, '_loadScript').callsFake(() =>
new Promise(resolve => resolveLoad = resolve)
);
// Assert preconditions:
assert.isFalse(element._hljsState.loading);
});
teardown(() => {
if (window.hljs) {
delete window.hljs;
}
// Because the element state is a singleton, clean it up.
element._hljsState.configured = false;
element._hljsState.loading = false;
element._hljsState.callbacks = [];
});
test('only load once', done => {
sinon.stub(element, '_getHLJSUrl').returns('');
const firstCallHandler = sinon.stub();
element.getHLJS().then(firstCallHandler);
// It should now be in the loading state.
assert.isTrue(loadStub.called);
assert.isTrue(element._hljsState.loading);
assert.isFalse(firstCallHandler.called);
const secondCallHandler = sinon.stub();
element.getHLJS().then(secondCallHandler);
// No change in state.
assert.isTrue(element._hljsState.loading);
assert.isFalse(firstCallHandler.called);
assert.isFalse(secondCallHandler.called);
// Now load the library.
resolveLoad();
flush(() => {
// The state should be loaded and both handlers called.
assert.isFalse(element._hljsState.loading);
assert.isTrue(firstCallHandler.called);
assert.isTrue(secondCallHandler.called);
done();
});
});
suite('preloaded', () => {
let hljsStub;
setup(() => {
hljsStub = {
configure: sinon.stub(),
};
window.hljs = hljsStub;
});
teardown(() => {
delete window.hljs;
});
test('returns hljs', done => {
const firstCallHandler = sinon.stub();
element.getHLJS().then(firstCallHandler);
flush(() => {
assert.isTrue(firstCallHandler.called);
assert.isTrue(firstCallHandler.calledWith(hljsStub));
done();
});
});
test('configures hljs', done => {
element.getHLJS().then(() => {
assert.isTrue(window.hljs.configure.calledOnce);
done();
});
});
});
suite('_getHLJSUrl', () => {
suite('checking _getLibRoot', () => {
let root;
setup(() => {
sinon.stub(element, '_getLibRoot').callsFake(() => root);
});
test('with no root', () => {
assert.isNull(element._getHLJSUrl());
});
test('with root', () => {
root = 'test-root.com/';
assert.equal(element._getHLJSUrl(),
'test-root.com/bower_components/highlightjs/highlight.min.js');
});
});
});
});