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
54 lines
1.4 KiB
JavaScript
54 lines
1.4 KiB
JavaScript
const {union} = require('./_30s.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(() => {
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union();
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}).toThrow();
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});
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test("union(true, 'str') throws an error", () => {
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expect(() => {
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union(true, 'str');
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}).toThrow();
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});
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test("union('false', true) throws an error", () => {
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expect(() => {
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union('false', true);
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}).toThrow();
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});
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test('union((123, {}) throws an error', () => {
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expect(() => {
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union(123, {});
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}).toThrow();
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});
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test('union([], {}) throws an error', () => {
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expect(() => {
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union([], {});
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}).toThrow();
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});
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test('union(undefined, null) throws an error', () => {
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expect(() => {
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union(undefined, null);
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}).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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