ctf/org.eclipse.tracecompass.tmf.ctf.core.tests/src/org/eclipse/tracecompass/tmf/ctf/core/tests/event/CtfTmfEventFieldSignExtensionTest.java

   1 /*******************************************************************************
   2  * Copyright (c) 2016 EfficiOS Inc., Alexandre Montplaisir
   3  *
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *******************************************************************************/
   9
  10 package org.eclipse.tracecompass.tmf.ctf.core.tests.event;
  11
  12 import static org.junit.Assert.assertArrayEquals;
  13 import static org.junit.Assert.assertEquals;
  14
  15 import java.util.stream.Collectors;
  16 import java.util.stream.LongStream;
  17
  18 import org.eclipse.jdt.annotation.NonNull;
  19 import org.eclipse.tracecompass.internal.tmf.ctf.core.trace.iterator.CtfIterator;
  20 import org.eclipse.tracecompass.testtraces.ctf.CtfTestTrace;
  21 import org.eclipse.tracecompass.tmf.core.event.ITmfEventField;
  22 import org.eclipse.tracecompass.tmf.ctf.core.event.CtfTmfEvent;
  23 import org.eclipse.tracecompass.tmf.ctf.core.tests.shared.CtfTmfTestTraceUtils;
  24 import org.eclipse.tracecompass.tmf.ctf.core.trace.CtfTmfTrace;
  25 import org.junit.After;
  26 import org.junit.Before;
  27 import org.junit.Test;
  28
  29 /**
  30  * Tests making sure sign extension sign extension of field values works
  31  * correctly.
  32  *
  33  * See: https://bugs.eclipse.org/bugs/show_bug.cgi?id=491382
  34  *
  35  * @author Alexandre Montplaisir
  36  */
  37 public class CtfTmfEventFieldSignExtensionTest {
  38
  39     private static final @NonNull CtfTestTrace DEBUG_INFO_TRACE = CtfTestTrace.DEBUG_INFO3;
  40
  41     private CtfTmfTrace trace;
  42
  43     /**
  44      * Test setup
  45      */
  46     @Before
  47     public void setUp() {
  48         trace = CtfTmfTestTraceUtils.getTrace(DEBUG_INFO_TRACE);
  49     }
  50
  51     /**
  52      * Test teardown
  53      */
  54     @After
  55     public void teardown() {
  56         if (trace != null) {
  57             trace.dispose();
  58         }
  59     }
  60
  61     /**
  62      * Test that signed 8-byte integers are printed correctly.
  63      */
  64     @Test
  65     public void testUnsignedByte() {
  66         /*
  67          * Third event of the trace is printed like this by Babeltrace:
  68          *
  69          * [16:25:03.003427176] (+0.000001578) sonoshee lttng_ust_statedump:build_id:
  70          *      { cpu_id = 0 }, { ip = 0x7F3BBEDDDE1E, vpid = 3520 },
  71          *      { baddr = 0x400000, _build_id_length = 20, build_id = [ [0] = 0x1, [1] = 0xC6, [2] = 0x5, [3] = 0xBC, [4] = 0xF3, [5] = 0x8D, [6] = 0x6, [7] = 0x8D, [8] = 0x77, [9] = 0xA6, [10] = 0xE0, [11] = 0xA0, [12] = 0x2C, [13] = 0xED, [14] = 0xE6, [15] = 0xA5, [16] = 0xC, [17] = 0x57, [18] = 0x50, [19] = 0xB5 ] }
  72          */
  73         long[] expectedValues = new long[] {
  74                 0x1,
  75                 0xC6,
  76                 0x5,
  77                 0xBC,
  78                 0xF3,
  79                 0x8D,
  80                 0x6,
  81                 0x8D,
  82                 0x77,
  83                 0xA6,
  84                 0xE0,
  85                 0xA0,
  86                 0x2C,
  87                 0xED,
  88                 0xE6,
  89                 0xA5,
  90                 0xC,
  91                 0x57,
  92                 0x50,
  93                 0xB5
  94         };
  95
  96         String expectedToString = LongStream.of(expectedValues)
  97                 .mapToObj(i -> "0x" + Long.toHexString(i))
  98                 .collect(Collectors.joining(", ", "build_id=[", "]"));
  99
 100         try (CtfIterator iter = (CtfIterator) trace.createIterator();) {
 101             /* Go to third event */
 102             iter.advance();
 103             iter.advance();
 104
 105             /* Retrieve the event's field called "build_id" */
 106             CtfTmfEvent event = iter.getCurrentEvent();
 107             ITmfEventField field = event.getContent().getField("build_id");
 108             long[] values = (long[]) field.getValue();
 109
 110             assertArrayEquals(expectedValues, values);
 111             assertEquals(expectedToString, field.toString());
 112         }
 113     }
 114 }