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
12 lines
348 B
JavaScript
12 lines
348 B
JavaScript
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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