public class AutoTest {
  /// This class tests your LinkedList code
  
 public static void main(String[] args) {
    LinkedList<String> ls = new LinkedList<String>();
    System.out.println("LinkedList is empty: " + ls.isEmpty());
    System.out.println("The size is: " + ls.size()); 
    System.out.println(ls); 
    
    String s1 = "I";
    String s2 = "Love";
    String s3 = "CS 1316";
    
    System.out.println( "About to add the first three node using addFirst(data)");
    ls.addFirst(s3);
    ls.addFirst(s2);
    ls.addFirst(s1);
    
    System.out.println( "... Done. As of now... ");
    System.out.println("LinkedList is empty: " + ls.isEmpty()); 
    System.out.println("The size is: " + ls.size()); 
    System.out.println(ls); 
    
    System.out.println("\nAbout to test getFirst().. " );
    System.out.println("The data in the first node is: " + ls.getFirst().toString());
    
    System.out.println("\nAbout to test contains(item)..");
    System.out.println("Contains \"Hello\": " + ls.contains("Hello"));// Should be FALSE
    System.out.println("Contains the data in the first node: " + ls.contains(ls.getFirst())); // Should be TRUE;
    
    
    
    System.out.println( "\nAbout to test set(index, data), using good AND bad inputs ");
    ls.set(2, "Weekends");
    ls.set(0, "We");
    ls.set(-1, "I'm on a boat"); // bad input. no effect
    ls.set(ls.size(), "Flippie floppies"); // bad input. no effect
    System.out.println( "... Done. As of now... ");
    System.out.println("LinkedList is empty: " + ls.isEmpty()); 
    System.out.println("The size is: " + ls.size()); 
    System.out.println(ls); 
    
    
    System.out.println("\nAbout to test addNode(index, data), using good AND bad inputs");
    ls.addNode(1, "All");
    ls.addNode(0, "Yes,");// adds a node in the first position (index of 0).
    ls.addNode(ls.size() + 1, "Tech"); // bad input; no effect
    ls.addNode(-1, "Geico");// bad input, no effect.
    System.out.println( " ... Done. As of now...");
    System.out.println("LinkedList is empty: " + ls.isEmpty()); 
    System.out.println("The size is: " + ls.size()); 
    System.out.println(ls); 
    
    
    System.out.println("\nAbout to test removeNthNode(index) using good AND bad inputs.");
    ls.removeNthNode(0); // removes the first node.
    ls.removeNthNode(ls.size()-1);// removes the last node
    ls.removeNthNode(-100000);// bad input; no effect.
    ls.removeNthNode(ls.size()); // bad input; no effect.
    System.out.println("...Done. As of now..");
    System.out.println("LinkedList is empty: " + ls.isEmpty()); 
    System.out.println("The size is: " + ls.size()); 
    System.out.println(ls); 
    
    
  }
}