package edu.uci.ics.jung.graph.util;
   
   import java.util.ArrayList;
   import java.util.List;
   
   import edu.uci.ics.jung.graph.util.Pair;
   
   import junit.framework.TestCase;
   
  public class PairTest extends TestCase {
      
      Pair<Number> pair;
      
  
      @Override
      protected void setUp() throws Exception {
          pair = new Pair<Number>(1,2);
          super.setUp();
      }
  
      public void testGetFirst() {
          assertEquals(pair.getFirst(), 1);
      }
  
      public void testGetSecond() {
          assertEquals(pair.getSecond(), 2);
      }
  
      public void testEqualsObject() {
          Pair<Number> ipair = new Pair<Number>(1,2);
          assertTrue(pair.equals(ipair));
      }
  
      public void testAdd() {
          try {
              pair.add(3);
              fail("should not be able to add to Pair");
          } catch(Exception e) { 
              // all is well
          }
      }
  
      public void testAddAll() {
          try {
              List<Number> list = new ArrayList<Number>(pair);
              pair.addAll(list);
              fail("should not be able to addAll to Pair");
          } catch(Exception e) { 
              // all is well
          }
      }
  
      public void testClear() {
          try {
              pair.clear();
              fail("should not be able to clear a Pair");
          } catch(Exception e) { 
              // all is well
          }
      }
  
      public void testContains() {
          assertTrue(pair.contains(1));
      }
  
      public void testContainsAll() {
          List<Number> list = new ArrayList<Number>(pair);
          assertTrue(pair.containsAll(list));
      }
  
      public void testIsEmpty() {
          assertFalse(pair.isEmpty());
      }
  
      public void testRemove() {
          try {
              pair.remove(1);
              fail("should not be able to remove from a Pair");
          } catch(Exception e) { 
              // all is well
          }
      }
  
      public void testRemoveAll() {
          try {
              List<Number> list = new ArrayList<Number>(pair);
              pair.removeAll(list);
              fail("should not be able to removeAll from Pair");
          } catch(Exception e) { 
              // all is well
          }
      }
  
      public void testRetainAll() {
          try {
              List<Number> list = new ArrayList<Number>(pair);
              pair.retainAll(list);
              fail("should not be able to retainAll from Pair");
          } catch(Exception e) { 
             // all is well
         }
     }
 
     public void testSize() {
         assertEquals(pair.size(), 2);
     }
 
     public void testToArray() {
         @SuppressWarnings("unused")
         Object[] arr = pair.toArray();
     }
 
     public void testToArraySArray() {
         @SuppressWarnings("unused")
         Integer[] arr = pair.<Integer>toArray(new Integer[2]);
     }
 
 }