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
18 lines
729 B
JavaScript
18 lines
729 B
JavaScript
const {getImages} = require('./_30s.js');
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const jsdom = require('jsdom');
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const { JSDOM } = jsdom;
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const TEST_HTML = new JSDOM('<!DOCTYPE html><p>Hello world</p><img src="https://upload.wikimedia.org/wikipedia/en/1/12/Yellow_Smiley_Face.png"></img>').window.document;
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test('getImages is a Function', () => {
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expect(getImages).toBeInstanceOf(Function);
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});
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test('getImages returns an Array', () => {
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expect(getImages(TEST_HTML)).toBeInstanceOf(Array);
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});
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test('getImages removes duplicates from images Array', () => {
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expect(getImages(TEST_HTML, false).length).toBeLessThanOrEqual(getImages(TEST_HTML, true).length);
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expect(getImages(TEST_HTML, true)).toEqual(expect.arrayContaining(getImages(TEST_HTML, false)));
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});
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