| 1 | /******************************************************************************* |
| 2 | * Copyright (c) 2013 École Polytechnique de Montréal |
| 3 | * |
| 4 | * All rights reserved. This program and the accompanying materials are made |
| 5 | * 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 | * Geneviève Bastien - Initial implementation |
| 11 | *******************************************************************************/ |
| 12 | |
| 13 | package org.eclipse.linuxtools.tmf.core.tests.synchronization; |
| 14 | |
| 15 | import static org.junit.Assert.*; |
| 16 | |
| 17 | import java.math.BigDecimal; |
| 18 | import java.util.HashMap; |
| 19 | import java.util.Map; |
| 20 | |
| 21 | import org.eclipse.linuxtools.internal.tmf.core.synchronization.TmfTimestampTransform; |
| 22 | import org.eclipse.linuxtools.internal.tmf.core.synchronization.TmfTimestampTransformLinear; |
| 23 | import org.eclipse.linuxtools.tmf.core.synchronization.ITmfTimestampTransform; |
| 24 | import org.eclipse.linuxtools.tmf.core.timestamp.ITmfTimestamp; |
| 25 | import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimestamp; |
| 26 | import org.junit.Test; |
| 27 | |
| 28 | /** |
| 29 | * Tests for {@link TmfTimestampTransform} and its descendants |
| 30 | * |
| 31 | * @author Geneviève Bastien |
| 32 | */ |
| 33 | @SuppressWarnings("nls") |
| 34 | public class TsTransformTest { |
| 35 | |
| 36 | private long ts = 1361657893526374091L; |
| 37 | private ITmfTimestamp oTs = new TmfTimestamp(ts); |
| 38 | |
| 39 | /** |
| 40 | * Test the linear transform |
| 41 | */ |
| 42 | @Test |
| 43 | public void testLinearTransform() { |
| 44 | /* Default constructor */ |
| 45 | TmfTimestampTransformLinear ttl = new TmfTimestampTransformLinear(); |
| 46 | assertEquals(1361657893526374091L, ttl.transform(ts)); |
| 47 | assertEquals(1361657893526374091L, ttl.transform(oTs).getValue()); |
| 48 | |
| 49 | /* Just an offset */ |
| 50 | ttl = new TmfTimestampTransformLinear(BigDecimal.valueOf(1.0), BigDecimal.valueOf(3)); |
| 51 | assertEquals(1361657893526374094L, ttl.transform(ts)); |
| 52 | assertEquals(1361657893526374094L, ttl.transform(oTs).getValue()); |
| 53 | |
| 54 | /* Just a slope */ |
| 55 | ttl = new TmfTimestampTransformLinear(BigDecimal.valueOf(2.0), BigDecimal.valueOf(0)); |
| 56 | assertEquals(2723315787052748182L, ttl.transform(ts)); |
| 57 | assertEquals(2723315787052748182L, ttl.transform(oTs).getValue()); |
| 58 | |
| 59 | /* Offset and slope */ |
| 60 | ttl = new TmfTimestampTransformLinear(BigDecimal.valueOf(2.0), BigDecimal.valueOf(3)); |
| 61 | assertEquals(2723315787052748185L, ttl.transform(ts)); |
| 62 | assertEquals(2723315787052748185L, ttl.transform(oTs).getValue()); |
| 63 | |
| 64 | /* Offset and slope */ |
| 65 | ttl = new TmfTimestampTransformLinear(BigDecimal.valueOf(0.5), BigDecimal.valueOf(0)); |
| 66 | assertEquals(680828946763187045L, ttl.transform(ts)); |
| 67 | assertEquals(680828946763187045L, ttl.transform(oTs).getValue()); |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Test for the identity transform |
| 72 | */ |
| 73 | @Test |
| 74 | public void testIdentityTransform() { |
| 75 | ITmfTimestampTransform tt = TmfTimestampTransform.IDENTITY; |
| 76 | assertEquals(ts, tt.transform(ts)); |
| 77 | assertEquals(oTs, tt.transform(oTs)); |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * Test hash and equals function |
| 82 | */ |
| 83 | @Test |
| 84 | public void testEquality() { |
| 85 | Map<ITmfTimestampTransform, String> map = new HashMap<>(); |
| 86 | ITmfTimestampTransform ttl = new TmfTimestampTransformLinear(BigDecimal.valueOf(2.0), BigDecimal.valueOf(3)); |
| 87 | ITmfTimestampTransform ttl2 = new TmfTimestampTransformLinear(BigDecimal.valueOf(2.0), BigDecimal.valueOf(3)); |
| 88 | ITmfTimestampTransform ttl3 = new TmfTimestampTransformLinear(BigDecimal.valueOf(3), BigDecimal.valueOf(3)); |
| 89 | assertEquals(ttl, ttl2); |
| 90 | assertFalse(ttl.equals(ttl3)); |
| 91 | assertFalse(ttl2.equals(ttl3)); |
| 92 | |
| 93 | map.put(ttl, "a"); |
| 94 | assertTrue(map.containsKey(ttl2)); |
| 95 | assertEquals("a", map.get(ttl)); |
| 96 | |
| 97 | ITmfTimestampTransform ti = TmfTimestampTransform.IDENTITY; |
| 98 | assertEquals(TmfTimestampTransform.IDENTITY, ti); |
| 99 | assertFalse(TmfTimestampTransform.IDENTITY.equals(ttl)); |
| 100 | |
| 101 | map.put(ti, "b"); |
| 102 | assertTrue(map.containsKey(TmfTimestampTransform.IDENTITY)); |
| 103 | assertEquals("b", map.get(ti)); |
| 104 | |
| 105 | assertFalse(ti.equals(ttl)); |
| 106 | assertFalse(ttl.equals(ti)); |
| 107 | |
| 108 | } |
| 109 | |
| 110 | /** |
| 111 | * Test the transform composition function |
| 112 | */ |
| 113 | @Test |
| 114 | public void testComposition() { |
| 115 | long t = 100; |
| 116 | ITmfTimestampTransform ti = TmfTimestampTransform.IDENTITY; |
| 117 | ITmfTimestampTransform ttl = new TmfTimestampTransformLinear(BigDecimal.valueOf(2.0), BigDecimal.valueOf(3)); |
| 118 | ITmfTimestampTransform ttl2 = new TmfTimestampTransformLinear(BigDecimal.valueOf(1.5), BigDecimal.valueOf(8)); |
| 119 | |
| 120 | ITmfTimestampTransform tc1 = ti.composeWith(ttl); |
| 121 | /* Should be ttl */ |
| 122 | assertEquals(ttl, tc1); |
| 123 | assertEquals(203, tc1.transform(t)); |
| 124 | |
| 125 | tc1 = ttl.composeWith(ti); |
| 126 | /* Should be ttl also */ |
| 127 | assertEquals(ttl, tc1); |
| 128 | assertEquals(203, tc1.transform(t)); |
| 129 | |
| 130 | tc1 = ti.composeWith(ti); |
| 131 | /* Should be identity */ |
| 132 | assertEquals(tc1, TmfTimestampTransform.IDENTITY); |
| 133 | assertEquals(100, tc1.transform(t)); |
| 134 | |
| 135 | tc1 = ttl.composeWith(ttl2); |
| 136 | assertEquals(ttl.transform(ttl2.transform(t)), tc1.transform(t)); |
| 137 | assertEquals(319, tc1.transform(t)); |
| 138 | |
| 139 | tc1 = ttl2.composeWith(ttl); |
| 140 | assertEquals(ttl2.transform(ttl.transform(t)), tc1.transform(t)); |
| 141 | assertEquals(312, tc1.transform(t)); |
| 142 | |
| 143 | } |
| 144 | } |