14 lines
354 B
JavaScript
14 lines
354 B
JavaScript
const expect = require('expect');
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const flip = require('./flip.js');
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test('flip is a Function', () => {
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expect(flip).toBeInstanceOf(Function);
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});
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let a = { name: 'John Smith' };
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let b = {};
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const mergeFrom = flip(Object.assign);
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let mergePerson = mergeFrom.bind(null, a);
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test('Flips argument order', () => {
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expect(mergePerson(b)).toEqual(a);
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});
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