import junit.framework.TestCase;

/**
 * A JUnit test case class for OpenList
 * Every method starting with the word "test" will be called when running
 * the test with JUnit.
 * 
 * Each test should have only one "assert" statement. 
 * Sometimes you may want assertTrue, while other times you might want assertEquals.
 * Also note that sometimes you might want to compare your results to another OpenList
 * which you create "by hand".  Early tests use strings for comparison, to test the constructor.
 * 
 * IMPORTANT: Do not use assertEquals to compare two OpenLists until you are sure that
 * your equals method is working. 
 * 
 * The "setUp" function is called before each of the tests.
 * 
 */
public class OpenListTester extends TestCase {
  
  private OpenList greetingL;
  private OpenList megagreeting;
  private OpenList numericStrings;
  private OpenList DB;
  
  protected void setUp()
  {
    greetingL = new OpenList( "Hello", OpenList.emptyList );
    megagreeting = new OpenList( "Hey", greetingL );
    numericStrings = OpenList.emptyList;
    for (int i=0 ; i<10 ; ++i)
    {
      numericStrings = new OpenList( i , numericStrings );
    }
    
    // Set up the DB for the assoc tests
    /*
     * creation of an association list
     * This would be much easier if we had written cons already...
     */
    OpenList sublist1 = new OpenList( "jan", new OpenList( 31, OpenList.emptyList ));
    OpenList sublist2 = new OpenList( "feb", new OpenList( 28, OpenList.emptyList ));
    OpenList sublist3 = new OpenList( "mar", new OpenList( 31, OpenList.emptyList ));

    DB = new OpenList( sublist3, OpenList.emptyList );
    DB = new OpenList( sublist2, DB );
    DB = new OpenList( sublist1, DB );

  }
  
  /**
   * Basic constructor test.
   */
  public void testConstructor1() {
    assertEquals("Constructor test 1", greetingL.toString(), "[Hello]");

  }
  /**
   * Test for creating an openList from another openList
   */
  public void testConstructor2(){
    assertEquals("Constructor test 2", megagreeting.toString(), "[Hey, Hello]");
  }
   
  /*
   * Test creating a longer list.
   * */
  public void testConstructor3() {
    assertEquals( "Constructor test 3", numericStrings.toString(), "[9, 8, 7, 6, 5, 4, 3, 2, 1, 0]");

  }
 
  // Tests for the static and non-static assoc functions follow
  // Note: This test will fail until the equals method is written
  public void testStaticAssoc1()
  {
    OpenList answer = new OpenList( "feb", new OpenList( 28, OpenList.emptyList ) );
    assertEquals( "Will fail if equals is not written", answer, OpenList.assoc("feb", DB));
  }

  public void testStaticAssoc2()
  {
    assertEquals( OpenList.emptyList, OpenList.assoc("sep", DB));
  }
  
  // Note: This test will fail until the equals method is written
  public void testNonStaticAssoc1()
  {
    OpenList answer = new OpenList( "feb", new OpenList( 28, OpenList.emptyList ) );
    assertEquals( "Will fail if equals is not written", answer, DB.assoc("feb"));
  }

  public void testNonStaticAssoc2()
  {
    assertEquals( OpenList.emptyList, DB.assoc("sep"));
  }


  
  // Add your tests below.
  
 
}