35 lines
1.3 KiB
JavaScript
35 lines
1.3 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]), [1, 2, 3).toEqual(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'), [ 's', 't', 'r', 'a').toEqual('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]), [[], {}, 1, 2).toEqual(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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t.throws(() => union(), 'union() throws an error');
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t.throws(() => union(true, 'str'), 'union(true, str) throws an error');
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t.throws(() => union('false', true), 'union(false, true) throws an error');
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t.throws(() => union(123, {}), 'union(123, {}) throws an error');
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t.throws(() => union([], {}), 'union([], {}) throws an error');
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t.throws(() => union(undefined, null), 'union(undefined, null) throws an error');
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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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