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
34 lines
1.1 KiB
JavaScript
34 lines
1.1 KiB
JavaScript
const {zip} = require('./_30s.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(() => {
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zip(null);
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}).toThrow();
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});
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test('zip(undefined) throws an error', () => {
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expect(() => {
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zip(undefined);
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}).toThrow();
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});
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