32 lines
1.1 KiB
JavaScript
32 lines
1.1 KiB
JavaScript
const expect = require('expect');
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const zip = require('./zip.js');
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test('zip is a Function', () => {
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expect(zip).toBeInstanceOf(Function);
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});
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test('zip([a, b], [1, 2], [true, false]) returns [[a, 1, true], [b, 2, false]]', () => {
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expect(zip(['a', 'b'], [1, 2], [true, false])).toEqual([['a', 1, true], ['b', 2, false]]);
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});
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test('zip([a], [1, 2], [true, false]) returns [[a, 1, true], [undefined, 2, false]]', () => {
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expect(zip(['a'], [1, 2], [true, false])).toEqual([['a', 1, true], [undefined, 2, false]]);
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});
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test('zip([]) returns []', () => {
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expect(zip()).toEqual([]);
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});
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test('zip(123) returns []', () => {
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expect(zip(123)).toEqual([]);
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});
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test('zip([a, b], [1, 2], [true, false]) returns an Array', () => {
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expect(Array.isArray(zip(['a', 'b'], [1, 2], [true, false]))).toBeTruthy();
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});
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test('zip([a], [1, 2], [true, false]) returns an Array', () => {
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expect(Array.isArray(zip(['a'], [1, 2], [true, false]))).toBeTruthy();
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});
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test('zip(null) throws an error', () => {
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expect(() => {zip(null);}).toThrow();
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});
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test('zip(undefined) throws an error', () => {
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expect(() => {zip(undefined);}).toThrow();
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});
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