1// Copyright (c) 2013, Google Inc.
2// All rights reserved.
3//
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5// modification, are permitted provided that the following conditions are
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17//
18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30#include <stdlib.h>
31#include <unistd.h>
32#include <sys/types.h>
33#include <stdio.h>
34#include <errno.h>
35#include <string.h>
36
37#include "breakpad_googletest_includes.h"
38#include "client/linux/minidump_writer/cpu_set.h"
39#include "common/linux/tests/auto_testfile.h"
40
41using namespace google_breakpad;
42
43namespace {
44
45typedef testing::Test CpuSetTest;
46
47// Helper class to write test text file to a temporary file and return
48// its file descriptor.
49class ScopedTestFile : public AutoTestFile {
50public:
51  explicit ScopedTestFile(const char* text)
52    : AutoTestFile("cpu_set", text) {
53  }
54};
55
56}
57
58TEST(CpuSetTest, EmptyCount) {
59  CpuSet set;
60  ASSERT_EQ(0, set.GetCount());
61}
62
63TEST(CpuSetTest, OneCpu) {
64  ScopedTestFile file("10");
65  ASSERT_TRUE(file.IsOk());
66
67  CpuSet set;
68  ASSERT_TRUE(set.ParseSysFile(file.GetFd()));
69  ASSERT_EQ(1, set.GetCount());
70}
71
72TEST(CpuSetTest, OneCpuTerminated) {
73  ScopedTestFile file("10\n");
74  ASSERT_TRUE(file.IsOk());
75
76  CpuSet set;
77  ASSERT_TRUE(set.ParseSysFile(file.GetFd()));
78  ASSERT_EQ(1, set.GetCount());
79}
80
81TEST(CpuSetTest, TwoCpusWithComma) {
82  ScopedTestFile file("1,10");
83  ASSERT_TRUE(file.IsOk());
84
85  CpuSet set;
86  ASSERT_TRUE(set.ParseSysFile(file.GetFd()));
87  ASSERT_EQ(2, set.GetCount());
88}
89
90TEST(CpuSetTest, TwoCpusWithRange) {
91  ScopedTestFile file("1-2");
92  ASSERT_TRUE(file.IsOk());
93
94  CpuSet set;
95  ASSERT_TRUE(set.ParseSysFile(file.GetFd()));
96  ASSERT_EQ(2, set.GetCount());
97}
98
99TEST(CpuSetTest, TenCpusWithRange) {
100  ScopedTestFile file("9-18");
101  ASSERT_TRUE(file.IsOk());
102
103  CpuSet set;
104  ASSERT_TRUE(set.ParseSysFile(file.GetFd()));
105  ASSERT_EQ(10, set.GetCount());
106}
107
108TEST(CpuSetTest, MultiItems) {
109  ScopedTestFile file("0, 2-4, 128");
110  ASSERT_TRUE(file.IsOk());
111
112  CpuSet set;
113  ASSERT_TRUE(set.ParseSysFile(file.GetFd()));
114  ASSERT_EQ(5, set.GetCount());
115}
116
117TEST(CpuSetTest, IntersectWith) {
118  ScopedTestFile file1("9-19");
119  ASSERT_TRUE(file1.IsOk());
120  CpuSet set1;
121  ASSERT_TRUE(set1.ParseSysFile(file1.GetFd()));
122  ASSERT_EQ(11, set1.GetCount());
123
124  ScopedTestFile file2("16-24");
125  ASSERT_TRUE(file2.IsOk());
126  CpuSet set2;
127  ASSERT_TRUE(set2.ParseSysFile(file2.GetFd()));
128  ASSERT_EQ(9, set2.GetCount());
129
130  set1.IntersectWith(set2);
131  ASSERT_EQ(4, set1.GetCount());
132  ASSERT_EQ(9, set2.GetCount());
133}
134
135TEST(CpuSetTest, SelfIntersection) {
136  ScopedTestFile file1("9-19");
137  ASSERT_TRUE(file1.IsOk());
138  CpuSet set1;
139  ASSERT_TRUE(set1.ParseSysFile(file1.GetFd()));
140  ASSERT_EQ(11, set1.GetCount());
141
142  set1.IntersectWith(set1);
143  ASSERT_EQ(11, set1.GetCount());
144}
145
146TEST(CpuSetTest, EmptyIntersection) {
147  ScopedTestFile file1("0-19");
148  ASSERT_TRUE(file1.IsOk());
149  CpuSet set1;
150  ASSERT_TRUE(set1.ParseSysFile(file1.GetFd()));
151  ASSERT_EQ(20, set1.GetCount());
152
153  ScopedTestFile file2("20-39");
154  ASSERT_TRUE(file2.IsOk());
155  CpuSet set2;
156  ASSERT_TRUE(set2.ParseSysFile(file2.GetFd()));
157  ASSERT_EQ(20, set2.GetCount());
158
159  set1.IntersectWith(set2);
160  ASSERT_EQ(0, set1.GetCount());
161
162  ASSERT_EQ(20, set2.GetCount());
163}
164
165