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

test('merge is a Function', () => {
  expect(merge).toBeInstanceOf(Function);
});
const object = {
  a: [{ x: 2 }, { y: 4 }],
  b: 1
};
const other = {
  a: { z: 3 },
  b: [2, 3],
  c: 'foo'
};
test('Merges two objects', () => {
  expect(merge(object, other)).toEqual({
    a: [{ x: 2 }, { y: 4 }, { z: 3 }],
    b: [1, 2, 3],
    c: 'foo'
  });
});