const expect = require('expect');
const {splitLines} = require('./_30s.js');

test('splitLines is a Function', () => {
  expect(splitLines).toBeInstanceOf(Function);
});
test('Splits a multiline string into an array of lines.', () => {
  expect(splitLines('This\nis a\nmultiline\nstring.\n')).toEqual([
    'This',
    'is a',
    'multiline',
    'string.',
    ''
  ]);
});