@tensorflow/tfjs-core
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Hardware-accelerated JavaScript library for machine intelligence
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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 { monitorPromisesProgress } from './progress';
describe('util.monitorPromisesProgress', () => {
it('Default progress from 0 to 1', (done) => {
const expectFractions = [0.25, 0.50, 0.75, 1.00];
const fractionList = [];
const tasks = Array(4).fill(0).map(() => {
return Promise.resolve();
});
monitorPromisesProgress(tasks, (progress) => {
fractionList.push(parseFloat(progress.toFixed(2)));
}).then(() => {
expect(fractionList).toEqual(expectFractions);
done();
});
});
it('Progress with pre-defined range', (done) => {
const startFraction = 0.2;
const endFraction = 0.8;
const expectFractions = [0.35, 0.50, 0.65, 0.80];
const fractionList = [];
const tasks = Array(4).fill(0).map(() => {
return Promise.resolve();
});
monitorPromisesProgress(tasks, (progress) => {
fractionList.push(parseFloat(progress.toFixed(2)));
}, startFraction, endFraction).then(() => {
expect(fractionList).toEqual(expectFractions);
done();
});
});
it('throws error when progress fraction is out of range', () => {
expect(() => {
const startFraction = -1;
const endFraction = 1;
const tasks = Array(4).fill(0).map(() => {
return Promise.resolve();
});
monitorPromisesProgress(tasks, (progress) => { }, startFraction, endFraction);
}).toThrowError();
});
it('throws error when startFraction more than endFraction', () => {
expect(() => {
const startFraction = 0.8;
const endFraction = 0.2;
const tasks = Array(4).fill(0).map(() => {
return Promise.resolve();
});
monitorPromisesProgress(tasks, (progress) => { }, startFraction, endFraction);
}).toThrowError();
});
it('throws error when promises is null', () => {
expect(() => {
monitorPromisesProgress(null, (progress) => { });
}).toThrowError();
});
it('throws error when promises is empty array', () => {
expect(() => {
monitorPromisesProgress([], (progress) => { });
}).toThrowError();
});
});
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