text: var passed = 0, failed = 0;
  
  console.log("Started testing");
  
  
  
  var equal =function(x,y){
  	if(y===x){
  		passed++;
  	}
  	else{
  		failed++;
  		console.log(x, "!=", y);
  	}
  }
  var exists =function(x){
  	if(!x){
  		failed ++;
  		alert(x,"doesnt exist, or is false");
  	}
  	else{
  		passed++;
  	}
  }
  
  exists(diesel);
  
  