forked from EVOgeek/Vmeda.Online
90 lines
2.5 KiB
TypeScript
90 lines
2.5 KiB
TypeScript
// (C) Copyright 2015 Moodle Pty Ltd.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import { formControlValue, resolved, startWithOnSubscribed } from '@/core/utils/rxjs';
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import { mock } from '@/testing/utils';
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import { FormControl } from '@angular/forms';
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import { of, Subject } from 'rxjs';
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describe('RXJS Utils', () => {
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it('Emits filtered form values', () => {
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// Arrange.
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let value = 'one';
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const emited: string[] = [];
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const valueChanges = new Subject();
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const control = mock<FormControl>({
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get value() {
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return value;
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},
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setValue(newValue) {
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value = newValue;
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valueChanges.next(newValue);
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},
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valueChanges,
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});
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// Act.
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control.setValue('two');
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formControlValue<string>(control).subscribe(value => emited.push(value));
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control.setValue(null);
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control.setValue('three');
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// Assert.
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expect(emited).toEqual(['two', 'three']);
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});
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it('Emits resolved values', async () => {
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// Arrange.
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const emited: string[] = [];
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const promises = [
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Promise.resolve('one'),
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Promise.resolve('two'),
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Promise.resolve('three'),
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];
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const source = of(...promises);
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// Act.
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source.pipe(resolved()).subscribe(value => emited.push(value));
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// Assert.
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await Promise.all(promises);
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expect(emited).toEqual(['one', 'two', 'three']);
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});
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it('Adds starting values on subscription', () => {
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// Arrange.
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let store = 'one';
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const emited: string[] = [];
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const source = of('final');
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// Act.
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const withStore = source.pipe(startWithOnSubscribed(() => store));
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store = 'two';
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withStore.subscribe(value => emited.push(value));
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store = 'three';
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withStore.subscribe(value => emited.push(value));
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// Assert.
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expect(emited).toEqual(['two', 'final', 'three', 'final']);
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});
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});
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