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23 lines
482 B
23 lines
482 B
import assert from 'assert'; |
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describe('flatMap', () => { |
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it('maps and flattens the results using the supplied callback', async () => { |
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let list = []; |
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await Observable.of('a', 'b', 'c').flatMap(x => |
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Observable.of(1, 2, 3).map(y => [x, y]) |
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).forEach(x => list.push(x)); |
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assert.deepEqual(list, [ |
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['a', 1], |
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['a', 2], |
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['a', 3], |
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['b', 1], |
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['b', 2], |
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['b', 3], |
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['c', 1], |
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['c', 2], |
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['c', 3], |
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]); |
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}); |
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});
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