17 lines
450 B
JavaScript
17 lines
450 B
JavaScript
const expect = require('expect');
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const when = require('./when.js');
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test('Testing when', () => {
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//For more information on all the methods supported by tape
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//Please go to https://github.com/substack/tape
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expect(typeof when === 'function').toBeTruthy();
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const doubleEvenNumbers = when(
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(x) => x % 2 === 0,
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(x) => x * 2
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);
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expect(doubleEvenNumbers(2) === 4).toBeTruthy();
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expect(doubleEvenNumbers(1) === 1).toBeTruthy();
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});
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