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31 lines
775 B
31 lines
775 B
4 months ago
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import assert from 'assert';
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describe('concat', () => {
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it('concatenates the supplied Observable arguments', async () => {
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let list = [];
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await Observable
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.from([1, 2, 3, 4])
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.concat(Observable.of(5, 6, 7))
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.forEach(x => list.push(x));
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assert.deepEqual(list, [1, 2, 3, 4, 5, 6, 7]);
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});
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it('can be used multiple times to produce the same results', async () => {
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const list1 = [];
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const list2 = [];
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const concatenated = Observable.from([1, 2, 3, 4])
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.concat(Observable.of(5, 6, 7));
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await concatenated
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.forEach(x => list1.push(x));
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await concatenated
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.forEach(x => list2.push(x));
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assert.deepEqual(list1, [1, 2, 3, 4, 5, 6, 7]);
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assert.deepEqual(list2, [1, 2, 3, 4, 5, 6, 7]);
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});
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});
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