/**
 * Test program for some basic functions of the unordered StringList class.
 * CSE 143 demonstration program.
 * @author Hal Perkins
 * @version 0.4, 4/7/06
 */
public class TestStringList {
  
  /**
   * Complain loudly if condition is false
   * @param condition any boolean value - throw a runtime exception if this is false.
   */
  public static void check(boolean condition) {
    if (!condition) {
      throw new RuntimeException("test failed");
    }
  }
  
  /** 
   * Create a StringList and try some of its operations.
   * This is not a comprehensive test, but gives some idea
   * how to create an object and use some of its methods.
   */
  public static void main(String[] args) {
    StringList s1 = new StringList();
    //System.out.println(s1);
    check(s1.isEmpty());
    check(s1.size() == 0);
    
    s1.add("foo");
    //System.out.println(s1);
    check(!s1.isEmpty());
    check(s1.size() == 1);
    check(s1.get(0).equals("foo"));
    
    s1.add("bar");
    s1.add("baz");
    //System.out.println(s1);
    check(s1.size() == 3);
    check(s1.get(0).equals("foo"));
    check(s1.get(2).equals("baz"));
    
    s1.set(1,"blah");
    //System.out.println(s1);
    check(s1.size() == 3);
    check(s1.get(0).equals("foo"));
    check(s1.get(1).equals("blah"));
    check(s1.get(2).equals("baz"));
    
    s1.add(1,"boo");
    //System.out.println(s1);
    check(s1.size() == 4);
    check(s1.get(0).equals("foo"));
    check(s1.get(1).equals("boo"));
    check(s1.get(2).equals("blah"));
    check(s1.get(3).equals("baz"));
    
    // test dynamic expansion
    StringList s2 = new StringList();
    for (int k = 1; k <= 1000; k++) {
      s2.add("stuff");
    }
    check(s2.size() == 1000);
    for (int k = 0; k < s2.size(); k++) {
      check(s2.get(k).equals("stuff"));
    }
    
    // iterator test
    StringList s3 = new StringList();
    s3.add("apple");
    s3.add("banana");
    s3.add("cherry");
    // Since StringListIterator is a nested class, we need its full name
    // here.  We'll see a better way to do this when we get to interfaces.
    StringList.StringListIterator it = s3.iterator();
    check(it.hasNext());
    check(it.next().equals("apple"));
    check(it.hasNext());
    check(it.next().equals("banana"));
    check(it.hasNext());
    check(it.next().equals("cherry"));
    check(!it.hasNext());
  }
}