org.eclipse.linuxtools.tmf.core.tests/src/org/eclipse/linuxtools/tmf/core/tests/util/PairTest.java

   1 /*******************************************************************************
   2  * Copyright (c) 2011, 2013 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *  Bernd Hufmann - Initial design and implementation
  11  *  Alexandre Montplaisir - Port to JUnit4
  12  *******************************************************************************/
  13
  14 package org.eclipse.linuxtools.tmf.core.tests.util;
  15
  16 import static org.junit.Assert.assertEquals;
  17 import static org.junit.Assert.assertTrue;
  18
  19 import org.eclipse.linuxtools.tmf.core.util.Pair;
  20 import org.junit.Test;
  21
  22 /**
  23  * Test case for Pair class.
  24  *
  25  * @author Bernd Hufmann
  26  */
  27 @SuppressWarnings("javadoc")
  28 public class PairTest {
  29
  30     // ------------------------------------------------------------------------
  31     // Field(s)
  32     // ------------------------------------------------------------------------
  33
  34     Pair<String, Long> fPair1 = new Pair<>("String 1", 1L);
  35     Pair<String, Long> fPair2 = new Pair<>("String 2", 2L);
  36
  37     // ------------------------------------------------------------------------
  38     // to String
  39     // ------------------------------------------------------------------------
  40
  41     @Test
  42     public void testToString() {
  43         String result = fPair1.toString();
  44         assertEquals("(String 1, 1)", result);
  45     }
  46
  47     // ------------------------------------------------------------------------
  48     // Setters/Getters
  49     // ------------------------------------------------------------------------
  50
  51     @Test
  52     public void testAccessors() {
  53         Pair<String, Long> myPair = new Pair<>("String 1", 1L);
  54         assertEquals("String 1", myPair.getFirst());
  55         assertEquals(Long.valueOf(1L), myPair.getSecond());
  56
  57         myPair.setFirst("Hello");
  58         assertEquals("Hello", myPair.getFirst());
  59
  60         myPair.setSecond(123L);
  61         assertEquals(Long.valueOf(123L), myPair.getSecond());
  62     }
  63
  64     // ------------------------------------------------------------------------
  65     // equals
  66     // ------------------------------------------------------------------------
  67
  68     @Test
  69     public void testEqualsReflexivity() {
  70         assertTrue("equals", fPair1.equals(fPair1));
  71         assertTrue("equals", fPair2.equals(fPair2));
  72
  73         assertTrue("equals", !fPair1.equals(fPair2));
  74         assertTrue("equals", !fPair2.equals(fPair1));
  75     }
  76
  77     @Test
  78     public void testEqualsSymmetry() {
  79         Pair<String, Long> info1 = new Pair<>(fPair1.getFirst(), fPair1.getSecond().longValue());
  80         Pair<String, Long> info2 = new Pair<>(fPair2.getFirst(), fPair2.getSecond().longValue());
  81
  82         assertTrue("equals", info1.equals(fPair1));
  83         assertTrue("equals", fPair1.equals(info1));
  84
  85         assertTrue("equals", info2.equals(fPair2));
  86         assertTrue("equals", fPair2.equals(info2));
  87     }
  88
  89     @Test
  90     public void testEqualsTransivity() {
  91         Pair<String, Long> info1 = new Pair<>(fPair1.getFirst(), fPair1.getSecond().longValue());
  92         Pair<String, Long> info2 = new Pair<>(fPair1.getFirst(), fPair1.getSecond().longValue());
  93         Pair<String, Long> info3 = new Pair<>(fPair1.getFirst(), fPair1.getSecond().longValue());
  94
  95         assertTrue("equals", info1.equals(info2));
  96         assertTrue("equals", info2.equals(info3));
  97         assertTrue("equals", info1.equals(info3));
  98     }
  99
 100     @Test
 101     public void testEqualsNull() {
 102         assertTrue("equals", !fPair1.equals(null));
 103         assertTrue("equals", !fPair2.equals(null));
 104     }
 105
 106     @Test
 107     public void testEqualsDifferentObj() {
 108         Pair<Long, String> info = new Pair<>(1L, "String1");
 109         assertTrue("equals", !fPair1.equals(info));
 110     }
 111
 112     // ------------------------------------------------------------------------
 113     // hashCode
 114     // ------------------------------------------------------------------------
 115
 116     @Test
 117     public void testHashCode() {
 118         Pair<String, Long> info1 = new Pair<>(fPair1.getFirst(), fPair1.getSecond().longValue());
 119         Pair<String, Long> info2 = new Pair<>(fPair2.getFirst(), fPair2.getSecond().longValue());
 120
 121         assertTrue("hashCode", fPair1.hashCode() == info1.hashCode());
 122         assertTrue("hashCode", fPair2.hashCode() == info2.hashCode());
 123
 124         assertTrue("hashCode", fPair1.hashCode() != info2.hashCode());
 125         assertTrue("hashCode", fPair2.hashCode() != info1.hashCode());
 126     }
 127 }