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comparison graal/com.oracle.graal.debug.test/src/com/oracle/graal/debug/test/DebugHistogramTest.java @ 9103:e7541d478e38

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Added DebugHistory utility and corresponding unit tests.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sat, 13 Apr 2013 17:55:43 +0200
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children 3495149b9531
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9102:908cac5f443c 9103:e7541d478e38
1 /*
2 * Copyright (c) 2013, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package com.oracle.graal.debug.test;
24
25 import java.io.*;
26
27 import org.junit.*;
28
29 import com.oracle.graal.debug.*;
30
31 public class DebugHistogramTest {
32
33 @Test
34 public void testEmptyHistogram() {
35 DebugHistogram histogram = Debug.createHistogram("TestHistogram");
36 ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
37 histogram.print(new PrintStream(outputStream));
38 Assert.assertEquals("TestHistogram is empty.\n", outputStream.toString());
39 }
40
41 @Test
42 public void testSingleEntryHistogram() {
43 DebugHistogram histogram = Debug.createHistogram("TestHistogram");
44 ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
45 histogram.add(new Integer(1));
46 histogram.add(new Integer(1));
47 histogram.print(new PrintStream(outputStream));
48 String[] lines = outputStream.toString().split("\n");
49 Assert.assertEquals(4, lines.length);
50 Assert.assertEquals("TestHistogram has 1 unique elements and 2 total elements:", lines[0]);
51 Assert.assertEquals(
52 "--------------------------------------------------------------------------------------------------------------------------------------------------------------------------",
53 lines[1]);
54 Assert.assertEquals(
55 "| 1 | 2 | ==================================================================================================== |",
56 lines[2]);
57 Assert.assertEquals(
58 "--------------------------------------------------------------------------------------------------------------------------------------------------------------------------",
59 lines[3]);
60 }
61
62 @Test
63 public void testMultipleEntryHistogram() {
64 DebugHistogram histogram = Debug.createHistogram("TestHistogram");
65 ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
66 histogram.add(new Integer(1));
67 histogram.add(new Integer(2));
68 histogram.add(new Integer(2));
69 histogram.print(new PrintStream(outputStream));
70 String[] lines = outputStream.toString().split("\n");
71 Assert.assertEquals(5, lines.length);
72 Assert.assertEquals("TestHistogram has 2 unique elements and 3 total elements:", lines[0]);
73 Assert.assertEquals(
74 "--------------------------------------------------------------------------------------------------------------------------------------------------------------------------",
75 lines[1]);
76 Assert.assertEquals(
77 "| 2 | 2 | ==================================================================================================== |",
78 lines[2]);
79 Assert.assertEquals(
80 "| 1 | 1 | ================================================== |",
81 lines[3]);
82 Assert.assertEquals(
83 "--------------------------------------------------------------------------------------------------------------------------------------------------------------------------",
84 lines[4]);
85 }
86 }