@google/model-viewer
Version:
Easily display interactive 3D models on the web and in AR!
48 lines • 1.96 kB
JavaScript
/* @license
* Copyright 2019 Google LLC. All Rights Reserved.
* 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 { parseExpressions } from '../../styles/parsers.js';
import { StyleEffector } from '../../styles/style-effector.js';
import { dispatchSyntheticEvent } from '../helpers.js';
const expect = chai.expect;
const triggerEnvironmentEffect = (type) => {
switch (type) {
case 'window-scroll':
dispatchSyntheticEvent(window, 'scroll');
break;
}
};
suite('StyleEffector', () => {
test('never invokes its callback for constant styles', () => {
let callbackInvoked = false;
const styleEffector = new StyleEffector(() => {
callbackInvoked = true;
});
styleEffector.observeEffectsFor(parseExpressions('123px calc(4 * 5%)'));
triggerEnvironmentEffect('window-scroll');
expect(callbackInvoked).to.be.false;
styleEffector.dispose();
});
test('invokes its callback for styles that depend on scroll', () => {
let callbackCount = 0;
const styleEffector = new StyleEffector(() => {
callbackCount++;
});
styleEffector.observeEffectsFor(parseExpressions('123px calc(env(window-scroll-y) * 5%)'));
triggerEnvironmentEffect('window-scroll');
expect(callbackCount).to.be.equal(1);
styleEffector.dispose();
});
});
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