25 lines
444 B
JavaScript
25 lines
444 B
JavaScript
const expect = require('expect');
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const reject = require('./reject.js');
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test('reject is a Function', () => {
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expect(reject).toBeInstanceOf(Function);
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});
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const noEvens = reject(
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(x) => x % 2 === 0,
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[1, 2, 3, 4, 5]
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);
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t.deepEqual(noEvens, [1, 3, 5]);
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const fourLettersOrLess = reject(
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(word) => word.length > 4,
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['Apple', 'Pear', 'Kiwi', 'Banana']
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);
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t.deepEqual(fourLettersOrLess, ['Pear', 'Kiwi']);
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