| /******************************************************************************* |
| * Copyright (c) 2013, 2014 École Polytechnique de Montréal |
| * |
| * All rights reserved. This program and the accompanying materials are made |
| * available under the terms of the Eclipse Public License 2.0 which |
| * accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Geneviève Bastien - Initial implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.tracecompass.tmf.core.tests.synchronization; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNotEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.math.BigDecimal; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.eclipse.jdt.annotation.NonNull; |
| import org.eclipse.tracecompass.internal.tmf.core.synchronization.TmfConstantTransform; |
| import org.eclipse.tracecompass.internal.tmf.core.synchronization.TmfTimestampTransform; |
| import org.eclipse.tracecompass.internal.tmf.core.synchronization.TmfTimestampTransformLinear; |
| import org.eclipse.tracecompass.tmf.core.synchronization.ITmfTimestampTransform; |
| import org.eclipse.tracecompass.tmf.core.timestamp.ITmfTimestamp; |
| import org.eclipse.tracecompass.tmf.core.timestamp.TmfTimestamp; |
| import org.junit.Test; |
| |
| /** |
| * Tests for {@link TmfTimestampTransform} and its descendants |
| * |
| * @author Geneviève Bastien |
| */ |
| @SuppressWarnings("nls") |
| public class TsTransformTest { |
| |
| private static final long ts = 1361657893526374091L; |
| private static final @NonNull ITmfTimestamp oTs = TmfTimestamp.fromSeconds(ts); |
| |
| /** |
| * Test the linear transform |
| */ |
| @Test |
| public void testLinearTransform() { |
| /* Default constructor */ |
| TmfTimestampTransformLinear ttl = new TmfTimestampTransformLinear(); |
| assertEquals(1361657893526374091L, ttl.transform(ts)); |
| assertEquals(1361657893526374091L, ttl.transform(oTs).getValue()); |
| |
| /* Just an offset */ |
| ttl = new TmfTimestampTransformLinear(BigDecimal.valueOf(1.0), BigDecimal.valueOf(3)); |
| assertEquals(1361657893526374094L, ttl.transform(ts)); |
| assertEquals(1361657893526374094L, ttl.transform(oTs).getValue()); |
| |
| /* Just a slope */ |
| ttl = new TmfTimestampTransformLinear(BigDecimal.valueOf(2.0), BigDecimal.valueOf(0)); |
| assertEquals(2723315787052748182L, ttl.transform(ts)); |
| assertEquals(2723315787052748182L, ttl.transform(oTs).getValue()); |
| |
| /* Offset and slope */ |
| ttl = new TmfTimestampTransformLinear(BigDecimal.valueOf(2.0), BigDecimal.valueOf(3)); |
| assertEquals(2723315787052748185L, ttl.transform(ts)); |
| assertEquals(2723315787052748185L, ttl.transform(oTs).getValue()); |
| |
| /* Offset and slope */ |
| ttl = new TmfTimestampTransformLinear(BigDecimal.valueOf(0.5), BigDecimal.valueOf(0)); |
| assertEquals(680828946763187045L, ttl.transform(ts)); |
| assertEquals(680828946763187045L, ttl.transform(oTs).getValue()); |
| } |
| |
| /** |
| * Test for the identity transform |
| */ |
| @Test |
| public void testIdentityTransform() { |
| ITmfTimestampTransform tt = TmfTimestampTransform.IDENTITY; |
| assertEquals(ts, tt.transform(ts)); |
| assertEquals(oTs, tt.transform(oTs)); |
| } |
| |
| /** |
| * Test hash and equals function |
| */ |
| @Test |
| public void testEquality() { |
| Map<ITmfTimestampTransform, String> map = new HashMap<>(); |
| ITmfTimestampTransform ttl = new TmfTimestampTransformLinear(BigDecimal.valueOf(2.0), BigDecimal.valueOf(3)); |
| ITmfTimestampTransform ttl2 = new TmfTimestampTransformLinear(BigDecimal.valueOf(2.0), BigDecimal.valueOf(3)); |
| ITmfTimestampTransform ttl3 = new TmfTimestampTransformLinear(BigDecimal.valueOf(3), BigDecimal.valueOf(3)); |
| assertEquals(ttl, ttl2); |
| assertFalse(ttl.equals(ttl3)); |
| assertFalse(ttl2.equals(ttl3)); |
| |
| map.put(ttl, "a"); |
| assertTrue(map.containsKey(ttl2)); |
| assertEquals("a", map.get(ttl)); |
| |
| ITmfTimestampTransform ti = TmfTimestampTransform.IDENTITY; |
| assertEquals(TmfTimestampTransform.IDENTITY, ti); |
| assertFalse(TmfTimestampTransform.IDENTITY.equals(ttl)); |
| |
| map.put(ti, "b"); |
| assertTrue(map.containsKey(TmfTimestampTransform.IDENTITY)); |
| assertEquals("b", map.get(ti)); |
| |
| assertFalse(ti.equals(ttl)); |
| assertFalse(ttl.equals(ti)); |
| } |
| |
| /** |
| * Test the equality of {@link TmfConstantTransform} objects. |
| */ |
| @Test |
| public void testEqualityConstantTransform() { |
| ITmfTimestampTransform tt1 = new TmfConstantTransform(50L); |
| ITmfTimestampTransform tt2 = new TmfConstantTransform(50L); |
| ITmfTimestampTransform tt3 = new TmfConstantTransform(-10L); |
| |
| assertEquals(tt1, tt2); |
| assertNotEquals(tt1, tt3); |
| assertNotEquals(tt2, tt3); |
| } |
| |
| /** |
| * Test the transform composition function |
| */ |
| @Test |
| public void testComposition() { |
| long t = 100; |
| ITmfTimestampTransform ti = TmfTimestampTransform.IDENTITY; |
| ITmfTimestampTransform ttl = new TmfTimestampTransformLinear(BigDecimal.valueOf(2.0), BigDecimal.valueOf(3)); |
| ITmfTimestampTransform ttl2 = new TmfTimestampTransformLinear(BigDecimal.valueOf(1.5), BigDecimal.valueOf(8)); |
| |
| ITmfTimestampTransform tc1 = ti.composeWith(ttl); |
| /* Should be ttl */ |
| assertEquals(ttl, tc1); |
| assertEquals(203, tc1.transform(t)); |
| |
| tc1 = ttl.composeWith(ti); |
| /* Should be ttl also */ |
| assertEquals(ttl, tc1); |
| assertEquals(203, tc1.transform(t)); |
| |
| tc1 = ti.composeWith(ti); |
| /* Should be identity */ |
| assertEquals(tc1, TmfTimestampTransform.IDENTITY); |
| assertEquals(100, tc1.transform(t)); |
| |
| tc1 = ttl.composeWith(ttl2); |
| assertEquals(ttl.transform(ttl2.transform(t)), tc1.transform(t)); |
| assertEquals(319, tc1.transform(t)); |
| |
| tc1 = ttl2.composeWith(ttl); |
| assertEquals(ttl2.transform(ttl.transform(t)), tc1.transform(t)); |
| assertEquals(312, tc1.transform(t)); |
| |
| } |
| |
| } |