19 lines
412 B
JavaScript
19 lines
412 B
JavaScript
const expect = require('expect');
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const transform = require('./transform.js');
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test('transform is a Function', () => {
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expect(transform).toBeInstanceOf(Function);
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});
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test('Transforms an object', () => {
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expect(
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transform(
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{ a: 1, b: 2, c: 1 },
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(r, v, k) => {
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(r[v] || (r[v] = [])).push(k);
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return r;
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},
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{}
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)
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).toEqual({ '1': ['a', 'c'], '2': ['b'] });
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});
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