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
352 B
JavaScript
13 lines
352 B
JavaScript
const {when} = require('./_30s.js');
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test('when is a Function', () => {
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expect(when).toBeInstanceOf(Function);
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});
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const doubleEvenNumbers = when(x => x % 2 === 0, x => x * 2);
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test('Returns the proper result', () => {
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expect(doubleEvenNumbers(2)).toBe(4);
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});
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test('Returns the proper result', () => {
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expect(doubleEvenNumbers(1)).toBe(1);
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});
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