Android Open Source - TipOnDiscount Update Set Tests

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License

The source code is released under:

GNU General Public License

Java Source Code

// Copyright 2011-2012 David A. Greenbaum
/*/*from  ww w. ja  va 2 s . c  o  m*/
This file is part of Tip On Discount.

Tip On Discount is free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

Tip On Discount is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with Tip On Discount.  If not, see <http://www.gnu.org/licenses/>.
*/

/**
 * This JUnit test harness verifies that the UpdateSet will store 
 * update notifications and that there can be only one notification
 * of each type. 
 */
package com.itllp.tipOnDiscount.model.update;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import java.math.BigDecimal;

import org.junit.Before;
import org.junit.Test;


public class UpdateSetTests {
  private UpdateSet us;
  BigDecimal oneDollar;
  BigDecimal twoDollars;

  
  @Before
  public void initialize() {
    us = new UpdateSet();
    oneDollar = new BigDecimal("1.00");
    twoDollars = new BigDecimal("2.00");
  }

  
  /* Tests initialization of the update set.
   */
  @Test
  public void testInitialization() {
    assertEquals("New update set should be empty", 0, us.size());
  }
  
  
  /* Test that the update set does not allow more than one item of each
   * update type. 
   */
  @Test
  public void testDuplicateAddition() {
    BillTotalUpdate bt1 = new BillTotalUpdate(oneDollar);
    us.add(bt1);
    
    BillTotalUpdate bt2 = new BillTotalUpdate(twoDollars);
    us.add(bt2);
    
    assertEquals("Update set should have one item", 1, us.size());
    assertTrue("Update set does not contain a bt item", us.contains(bt1));
    BillTotalUpdate btTemp = (BillTotalUpdate) us.remove(bt2);
    assertEquals("Update set does not contain correct bt item", 
        bt2, btTemp);
  }
  
  

  /* Test that the update set contains only the last added update
   * each type of update. 
   */
  @Test
  public void testNewSingleAddition() {
    BillTotalUpdate bt = new BillTotalUpdate(oneDollar);
    us.add(bt);
    assertEquals("Update set should have one item", 1, us.size());
    assertTrue("Update set does not contain item", us.contains(bt));
  }
  
  
  /* Test that the update set contains only the last added update
   * each type of update. 
   */
  @Test
  public void testNewMultipleAdditions() {
    BillTotalUpdate bt = new BillTotalUpdate(oneDollar);
    us.add(bt);
    BillSubtotalUpdate bs = new BillSubtotalUpdate(oneDollar);
    us.add(bs);
    assertEquals("Update set should have two items", 2, us.size());
    assertTrue("Update set does not contain bt item", us.contains(bt));
    assertTrue("Update set does not contain bs item", us.contains(bs));
  }
  
  

}

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