43 lines
1.4 KiB
JavaScript
43 lines
1.4 KiB
JavaScript
const expect = require('expect');
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const union = require('./union.js');
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test('union is a Function', () => {
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expect(union).toBeInstanceOf(Function);
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});
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test('union([1, 2, 3], [4, 3, 2]) returns [1, 2, 3, 4]', () => {
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expect(union([1, 2, 3], [4, 3, 2])).toEqual([1, 2, 3, 4]);
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});
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test('union(\'str\', \'asd\') returns [ \'s\', \'t\', \'r\', \'a\', \'d\' ]', () => {
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expect(union('str', 'asd')).toEqual([ 's', 't', 'r', 'a', 'd' ]);
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});
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test('union([[], {}], [1, 2, 3]) returns [[], {}, 1, 2, 3]', () => {
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expect(union([[], {}], [1, 2, 3])).toEqual([[], {}, 1, 2, 3]);
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});
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test('union([], []) returns []', () => {
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expect(union([], [])).toEqual([]);
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});
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test('union() throws an error', () => {
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expect(() => {union(); }).toThrow();
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});
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test('union(true, \'str\') throws an error', () => {
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expect(() => {union(true, 'str'); }).toThrow();
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});
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test('union(\'false\', true) throws an error', () => {
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expect(() => {union('false', true); }).toThrow();
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});
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test('union((123, {}) throws an error', () => {
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expect(() => {union(123, {}); }).toThrow();
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});
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test('union([], {}) throws an error', () => {
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expect(() => {union([], {}); }).toThrow();
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});
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test('union(undefined, null) throws an error', () => {
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expect(() => {union(undefined, null); }).toThrow();
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});
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let start = new Date().getTime();
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union([1, 2, 3], [4, 3, 2]);
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let end = new Date().getTime();
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test('union([1, 2, 3], [4, 3, 2]) takes less than 2s to run', () => {
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expect((end - start) < 2000).toBeTruthy();
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});
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