material-motion-testing-utils/dist/useMockedPerformance.js

Utilities for testing the Material Motion framework

"use strict";
/** @license
 *  Copyright 2016 - present The Material Motion Authors. 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.
 */
Object.defineProperty(exports, "__esModule", { value: true });
const mocha_sugar_free_1 = require("mocha-sugar-free");
const sinon_1 = require("sinon");
const Performance_1 = require("./Performance");
/**
 * Replaces window.requestAnimationFrame with a mock for the duration of a mocha
 * testing suite.
 */
function useMockedPerformance(closure) {
    return () => {
        const mockPerformance = new Performance_1.Performance();
        mocha_sugar_free_1.before(() => {
            sinon_1.stub(performance, 'now').callsFake(mockPerformance.now);
        });
        mocha_sugar_free_1.after(() => {
            performance.now.restore(); // tslint:disable-line: no-unbound-method
        });
        return closure(mockPerformance);
    };
}
exports.default = useMockedPerformance;
;
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