83a6a6ea32
* chore: make aware eslint that we use jest By setting up the jest environment, we no longer need to declare the 'test' global in the configuration. * chore: don't need to import expect, it's a jest environment global * chore: don't need to import expect when creating undefined test
9 lines
243 B
JavaScript
9 lines
243 B
JavaScript
const {mapKeys} = require('./_30s.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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test('Maps keys', () => {
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expect(mapKeys({ a: 1, b: 2 }, (val, key) => key + val)).toEqual({ a1: 1, b2: 2 });
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});
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