function Topic(name, type)
{
  this.name = name;
  this.type = type;

  this.includeInBag = false;

  this.equals = function (otherTopic)
  {
    if( this.name == otherTopic.name && this.type == otherTopic.type)
    {
      return true;
    }
    return false;
  };

};

function containsTopic(obj, list) {
    var x;
    for (x in list) {
        if (obj.equals(list[x])) {
            return true;
        }
    }

    return false;
}

function testToics()
{
  var topics = [new Topic("a","a_t"), new Topic("b","b_t"), new Topic("c","c_t")];

  console.log("Testing Topic");

  if (containsTopic(new Topic("a","a_t"),topics) == true)
  {
    console.log("pass")
  }
  else
  {
    console.log(" contains true fail")
  }

  if (containsTopic(new Topic("d","d_t"),topics) == false)
  {
    console.log("pass")
  }
  else
  {
    console.log(" contains d fail")
  }
}

testToics();