class PotionBottleTester {
    
    public static void main( String[] args ) {
        PotionBottle pb1 = new PotionBottle( "blue", 1.0, 3 );
        PotionBottle pb2 = new PotionBottle( "green", 0.5, 10 );
        PotionBottle pb3 = new PotionBottle( "green", 0.5, 2 );
        PotionBottle water = new PotionBottle( "clear", 0, 7 );
        PotionBottle empty = new PotionBottle( "yellow", 1.0, 0 );

        System.out.print("\nTesting getters");
        checkExpect( pb1.getPotency(), 1.0 );
        checkExpect( pb1.getNumDoses(), 3 );
        checkExpect( pb2.getPotency(), 0.5 );
        checkExpect( pb2.getNumDoses(), 10 );
         
        
        System.out.print("\nTesting isEmpty and consumeOneDose");
        checkExpect( pb1.isEmpty(), false );
        checkExpect( water.isEmpty(), false );
        checkExpect( empty.isEmpty(), true );
        
        checkExpect( empty.getNumDoses(), 0 );
        empty.consumeOneDose();
        checkExpect( empty.getNumDoses(), 0 );
        checkExpect( empty.isEmpty(), true );
        empty.consumeOneDose();
        checkExpect( empty.getNumDoses(), 0 );
        checkExpect( empty.isEmpty(), true );
        
        checkExpect( pb3.getNumDoses(), 2 );
        pb3.consumeOneDose();
        checkExpect( pb3.getNumDoses(), 1 );
        pb3.consumeOneDose();
        checkExpect( pb3.getNumDoses(), 0 );
        pb3.consumeOneDose();
        checkExpect( pb3.getNumDoses(), 0 );

        
        System.out.print("\nTesting toString");
        checkExpect( pb1.toString(), "3 doses of a blue potion (potency 1.0)" );
        checkExpect( pb2.toString(), "10 doses of a green potion (potency 0.5)" );
        checkExpect( pb3.toString(), "0 doses of a green potion (potency 0.5)" );
        checkExpect( water.toString(), "7 doses of a clear potion (potency 0.0)" );
    
        
        System.out.print("\nTesting calculateStorePrice");
        checkExpect( pb1.calculateStorePrice(), 45.0 );
        checkExpect( pb2.calculateStorePrice(), 75.0 );
        checkExpect( empty.calculateStorePrice(), 0.0 );
        checkExpect( water.calculateStorePrice(), 0.0 );
    
        System.out.print("\nTesting calculateSecondHandPrice");
        checkExpect( pb1.calculateSecondhandPrice(), 30.0 );
        checkExpect( pb2.calculateSecondhandPrice(), 50.0 );
        checkExpect( empty.calculateSecondhandPrice(), 0.0 );
        checkExpect( water.calculateSecondhandPrice(), 0.0 );
        
        System.out.println("\nTesting done.\n\n");
    }
    
    
    
    
    
    
  /*******************************************************************************/
  /*   Here are (multiple versions of) checkExpect --
   *   Strings and doubles are each handled slightly differently than most.
   *   
   *   If the test passes, a single "." is printed.
   *   If it fails, a message is printed.
   */
    
  static void checkExpect( int actual, int expected ) {
    if (actual == expected) {
      System.out.print(".");
    }
    else {
      System.out.print("\nfailed test: expected " + expected + ", got " + actual );
    }
  }

  static void checkExpect( double actual, double expected ) {
    final double TOLERANCE = 0.00001;  // How close is close enough?
    if (Math.abs(actual-expected) < TOLERANCE) {
      System.out.print(".");
    }
    else {
      System.out.print("\nfailed test: expected " + expected + ", got " + actual );
    }
  }

  static void checkExpect( boolean actual, boolean expected ) {
    if (actual == expected) {
      System.out.print(".");
    }
    else {
      System.out.print("\nfailed test: expected " + expected + ", got " + actual );
    }
  }    

  static void checkExpect( String actual, String expected ) {
    if (actual.equals(expected)) {
      System.out.print(".");
    }
    else {
      System.out.print("\nfailed test: expected \"" + expected + "\", got \"" + actual + "\"" );
    }
  }  
    
    
}