13 lines
382 B
JavaScript
13 lines
382 B
JavaScript
const expect = require('expect');
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const {composeRight} = require('./_30s.js');
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test('composeRight is a Function', () => {
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expect(composeRight).toBeInstanceOf(Function);
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});
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const add = (x, y) => x + y;
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const square = x => x * x;
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const addAndSquare = composeRight(add, square);
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test('Performs left-to-right function composition', () => {
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expect(addAndSquare(1, 2)).toBe(9);
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});
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