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