10 lines
408 B
JavaScript
10 lines
408 B
JavaScript
const expect = require('expect');
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const intersectionBy = require('./intersectionBy.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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