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
61 lines
1.9 KiB
JavaScript
61 lines
1.9 KiB
JavaScript
const {uniqueElements} = require('./_30s.js');
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test('uniqueElements is a Function', () => {
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expect(uniqueElements).toBeInstanceOf(Function);
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});
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test('uniqueElements([1, 2, 2, 3, 4, 4, 5]) returns [1,2,3,4,5]', () => {
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expect(uniqueElements([1, 2, 2, 3, 4, 4, 5])).toEqual([1, 2, 3, 4, 5]);
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});
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test('uniqueElements([1, 23, 53]) returns [1, 23, 53]', () => {
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expect(uniqueElements([1, 23, 53])).toEqual([1, 23, 53]);
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});
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test("uniqueElements([true, 0, 1, false, false, undefined, null, '']) returns [true, 0, 1, false, false, undefined, null, '']", () => {
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expect(uniqueElements([true, 0, 1, false, false, undefined, null, ''])).toEqual([
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true,
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0,
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1,
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false,
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undefined,
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null,
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''
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]);
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});
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test('uniqueElements() returns []', () => {
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expect(uniqueElements()).toEqual([]);
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});
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test('uniqueElements(null) returns []', () => {
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expect(uniqueElements(null)).toEqual([]);
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});
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test('uniqueElements(undefined) returns []', () => {
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expect(uniqueElements(undefined)).toEqual([]);
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});
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test("uniqueElements('strt') returns ['s', 't', 'r']", () => {
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expect(uniqueElements('strt')).toEqual(['s', 't', 'r']);
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});
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test('uniqueElements(1, 1, 2543, 534, 5) throws an error', () => {
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expect(() => {
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uniqueElements(1, 1, 2543, 534, 5);
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}).toThrow();
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});
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test('uniqueElements({}) throws an error', () => {
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expect(() => {
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uniqueElements({});
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}).toThrow();
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});
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test('uniqueElements(true) throws an error', () => {
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expect(() => {
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uniqueElements(true);
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}).toThrow();
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});
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test('uniqueElements(false) throws an error', () => {
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expect(() => {
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uniqueElements(false);
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}).toThrow();
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});
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let start = new Date().getTime();
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uniqueElements([true, 0, 1, false, false, undefined, null, '']);
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let end = new Date().getTime();
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test('uniqueElements([true, 0, 1, false, false, undefined, null]) takes less than 2s to run', () => {
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expect(end - start < 2000).toBeTruthy();
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});
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