| 1 | /**
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| 2 | * @license
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| 3 | * Copyright 2018 Google LLC. All Rights Reserved.
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | * =============================================================================
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| 16 | */
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| 17 | import * as tf from './index';
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| 18 | import { ALL_ENVS, describeWithFlags } from './jasmine_util';
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| 19 | describeWithFlags('nextFrame', ALL_ENVS, () => {
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| 20 | it('basic usage', async () => {
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| 21 | const t0 = tf.util.now();
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| 22 | await tf.nextFrame();
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| 23 | const t1 = tf.util.now();
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| 24 | // tf.util.now should give sufficient accuracy on all supported envs.
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| 25 | expect(t1 > t0);
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| 26 | });
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| 27 | it('does not block timers', async () => {
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| 28 | let flag = false;
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| 29 | setTimeout(() => {
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| 30 | flag = true;
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| 31 | }, 50);
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| 32 | const t0 = tf.util.now();
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| 33 | expect(flag).toBe(false);
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| 34 | while (tf.util.now() - t0 < 1000 && !flag) {
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| 35 | await tf.nextFrame();
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| 36 | }
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| 37 | expect(flag).toBe(true);
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| 38 | });
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| 39 | });
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| 40 | //# sourceMappingURL=browser_util_test.js.map |
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