function addToList(list, item) {
  list.push(item)
  return list
}




/* From here down, you are not expected to
   understand.... for now :)


   Nothing to see here!

*/


// tests

function testAddToList() {

  const input1 = ["red", "blue", "green"];
  const input2 = "pink";
  const expected = ["red", "blue", "green", "pink"];
  const result = addToList(input1, input2);

  if (
    result && result.length && expected.length === result.length &&
    expected.every(function(item) {
      return result.indexOf(item) > -1;
    })) {
    console.log('SUCCESS: `addToList` works!');
  } else {
    console.error('FAILURE: `addToList` is not working');
  }
}

testAddToList();