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17 lines
560 B
TypeScript
17 lines
560 B
TypeScript
import { filterMap } from './filter-map';
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describe('util/filter-map', () => {
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it('should return an empty array when given an empty array', () => {
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const input: unknown[] = [];
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const output = filterMap(input, () => 42);
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expect(output).toBe(input);
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expect(output).toBeEmpty();
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});
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it('should return an array with only the mapped values that pass the filter', () => {
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const input = [0, 1, 2, 3, 4];
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const output = filterMap(input, (n) => n * n);
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expect(output).toBe(input);
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expect(output).toEqual([1, 4, 9, 16]);
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});
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});
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