class TresAmigosTester {
    
  public static void main(String[] args) {
    TresAmigos f1 = new TresAmigos( "Arturo", "Margarita", "Zorro" );
    TresAmigos f2 = new TresAmigos( "Arturo", "Zorro", "Margarita" );
    TresAmigos f3 = new TresAmigos( "Margarita", "Arturo", "Zorro" );
    TresAmigos f4 = new TresAmigos( "Margarita", "Zorro", "Arturo" );
    TresAmigos f5 = new TresAmigos( "Zorro", "Arturo", "Margarita" );
    TresAmigos f6 = new TresAmigos( "Zorro", "Margarita", "Arturo" );

    TresAmigos g1 = new TresAmigos( "Arturo", "Arturo", "Margarita" );
    TresAmigos g2 = new TresAmigos( "Arturo", "Margarita", "Arturo" );
    TresAmigos g3 = new TresAmigos( "Margarita", "Arturo", "Arturo" );
     
    TresAmigos h1 = new TresAmigos( "Zorro", "Zorro", "Zorro" );
   
    System.err.println("\nStarting tests:" );
    // Call three of our own (static) methods:
    TresAmigosTester.testGetters(f1, "Arturo", "Margarita", "Zorro", "f1");
    TresAmigosTester.testGetters(f2, "Arturo", "Margarita", "Zorro", "f2");
    TresAmigosTester.testGetters(f3, "Arturo", "Margarita", "Zorro", "f3");
    TresAmigosTester.testGetters(f4, "Arturo", "Margarita", "Zorro", "f4");
    TresAmigosTester.testGetters(f5, "Arturo", "Margarita", "Zorro", "f5");
    TresAmigosTester.testGetters(f6, "Arturo", "Margarita", "Zorro", "f6");
        
    TresAmigosTester.testGetters(g1, "Arturo", "Arturo", "Margarita", "g1");
    TresAmigosTester.testGetters(g2, "Arturo", "Arturo", "Margarita", "g2");
    TresAmigosTester.testGetters(g3, "Arturo", "Arturo", "Margarita", "g3");

    TresAmigosTester.testGetters(h1, "Zorro", "Zorro", "Zorro", "h1");
    System.err.println("Finished tests." );
    }

  /** Do a comprehensive check on calling getFirst,getSecond,getThird for
   * a TresAmigos object.
   * @param f The TresAmigos object to test.
   * @param exp1 The expected alphabetically-first name.
   * @param exp2 The expected alphabetically-second name.
   * @param exp3 The expected alphabetically-third name.
   * @param posseName A name for this test case, for error-reporting purposes.
   */
   public static void testGetters( TresAmigos f, String exp1, String exp2, String exp3, String posseName ) {
     TresAmigosTester.reportIfError( exp2, f.getSecond(), posseName, "Second" );
     TresAmigosTester.reportIfError( exp1, f.getFirst(),  posseName, "First"  );
     TresAmigosTester.reportIfError( exp3, f.getThird(),  posseName, "Third"  );
     }
    
  /** Look at the results of one particular test, and print an error
   * if the results weren't expected.
   * @param expectedResult What the test case *should* have given.
   * @param actualResult   What the test case *actually* gave.
   * @param The name (for testing) of the object being tested, e.g. "f3".
   * @param The name (for testing) of the method being tested, e.g. "getThird".
   */
   public static void reportIfError( String expectedResult, String actualResult,
                                     String posseName, String methodName ) {
     if (! expectedResult.equals(actualResult)) {
       System.err.println( posseName + "." + "get" + methodName
                         + " expected \"" + expectedResult + "\""
                         + " but got \""  + actualResult   + "\"." );
       }
     }
  
     
  }