join.html

<script src="../simpleTest.js"></script>
<script>

// NOTES:
// array.string()


// join REQUIREMENTS:

// DONE It should convert the array into a string.
// DONE It should include all elements of the array in the string.
// DONE If second argument is passed in, it should seperate each element from array in the string using the value identified in the second argument.
// DONE If no seperator is included, it should use a comma to seperate elements.
// DONE If seperator is an empty string, it should not seperate elements in string.
// DONE If necessary, it should convert seperator into a string.



function join(array, seperator) {
  var joinedArray;
  var bucket = [];
  
  if (arguments.length === 2) {
    joinedArray = (array[0].toString() + seperator.toString());
    for (var i = 1; i < array.length - 1; i++) {
      joinedArray = joinedArray + (array[i].toString() + seperator.toString());
    }
    joinedArray = joinedArray + array[array.length - 1];
    return joinedArray;
  } else {
    joinedArray = array.toString();
    return joinedArray;
  }
}


tests({

  'It should convert the array into a string.': function() {
    var myArray = ['element'];
    var result = join(myArray);
    var whatIsIt = (typeof result);
    eq(whatIsIt, 'string');
  },
  'It should include all elements of the array in the string.': function() {
    var myArray = ['first', 'second'];
    var result = join(myArray);
    eq(result, 'first,second');
  },
  'If second argument is passed in, it should seperate each element from array in the string using the value identified in the second argument.': function() {
    var myArray = ['first', 'second', 'third'];
    var result = join(myArray, '-');
  },
  'If no seperator is included, it should use a comma to seperate elements.': function() {
    var myArray = ['first', 'second'];
    var result = join(myArray);
    eq(result, 'first,second');
  },
  'If seperator is an empty string, it should not seperate elements in string.': function() {
    var myArray = ['first', 'second'];
    var result = join(myArray, '');
    eq(result, 'firstsecond');
  },
  'If necessary, it should convert seperator into a string.': function() {
    var myArray = ['first', 'second'];
    var result = join(myArray, 2);
    eq(result, 'first2second')
  }


});
</script>