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
13 lines
322 B
JavaScript
13 lines
322 B
JavaScript
const {flip} = require('./_30s.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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