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
9 lines
366 B
JavaScript
9 lines
366 B
JavaScript
const {intersectionBy} = require('./_30s.js');
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test('intersectionBy is a Function', () => {
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expect(intersectionBy).toBeInstanceOf(Function);
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});
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test('Returns a list of elements that exist in both arrays, after applying the provided function to each array element of both', () => {
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expect(intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor)).toEqual([2.1]);
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});
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