11 lines
265 B
JavaScript
11 lines
265 B
JavaScript
const expect = require('expect');
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const mapKeys = require('./mapKeys.js');
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test('mapKeys is a Function', () => {
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expect(mapKeys).toBeInstanceOf(Function);
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});
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t.deepEqual(mapKeys({ a: 1, b: 2 }, (val, key) => key + val), { a1: 1, b2: 2 }, 'Maps keys');
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