1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
// Copyright 2016 The Bazel Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <fcntl.h>
#include <unistd.h>
#include <algorithm>
#include "src/main/cpp/util/file_platform.h"
#include "gtest/gtest.h"
namespace blaze_util {
using std::pair;
using std::string;
using std::vector;
TEST(FilePosixTest, Which) {
ASSERT_EQ("", Which(""));
ASSERT_EQ("", Which("foo"));
ASSERT_EQ("", Which("/"));
// /usr/bin/yes exists on Linux, Darwin, and MSYS, but "which yes" does not
// always return that (if $PATH is different).
string actual = Which("yes");
// Assert that it's an absolute path
ASSERT_EQ(0, actual.find("/"));
// Assert that it ends with /yes, we cannot assume more than that.
ASSERT_EQ(actual.size() - string("/yes").size(), actual.rfind("/yes"));
}
TEST(FilePosixTest, PathExists) {
ASSERT_FALSE(PathExists("/this/should/not/exist/mkay"));
ASSERT_FALSE(PathExists("non.existent"));
ASSERT_FALSE(PathExists(""));
// /usr/bin/yes exists on Linux, Darwin, and MSYS
ASSERT_TRUE(PathExists("/"));
ASSERT_TRUE(PathExists("/usr"));
ASSERT_TRUE(PathExists("/usr/"));
ASSERT_TRUE(PathExists("/usr/bin/yes"));
}
TEST(FilePosixTest, CanAccess) {
for (int i = 0; i < 8; ++i) {
ASSERT_FALSE(CanAccess("/this/should/not/exist/mkay", i & 1, i & 2, i & 4));
ASSERT_FALSE(CanAccess("non.existent", i & 1, i & 2, i & 4));
}
for (int i = 0; i < 4; ++i) {
// /usr/bin/yes exists on Linux, Darwin, and MSYS
ASSERT_TRUE(CanAccess("/", i & 1, false, i & 2));
ASSERT_TRUE(CanAccess("/usr", i & 1, false, i & 2));
ASSERT_TRUE(CanAccess("/usr/", i & 1, false, i & 2));
ASSERT_TRUE(CanAccess("/usr/bin/yes", i & 1, false, i & 2));
}
char* tmpdir_cstr = getenv("TEST_TMPDIR");
ASSERT_FALSE(tmpdir_cstr == NULL);
string tmpdir(tmpdir_cstr);
ASSERT_NE("", tmpdir);
string mock_file = tmpdir + (tmpdir.back() == '/' ? "" : "/") +
"FilePosixTest.CanAccess.mock_file";
int fd = open(mock_file.c_str(), O_CREAT, 0500);
ASSERT_GT(fd, 0);
close(fd);
// Sanity check: assert that we successfully created the file with the given
// permissions.
ASSERT_EQ(0, access(mock_file.c_str(), R_OK | X_OK));
ASSERT_NE(0, access(mock_file.c_str(), R_OK | W_OK | X_OK));
// Actual assertion
for (int i = 0; i < 4; ++i) {
ASSERT_TRUE(CanAccess(mock_file, i & 1, false, i & 2));
ASSERT_FALSE(CanAccess(mock_file, i & 1, true, i & 2));
}
}
TEST(FilePosixTest, GetCwd) {
char cwdbuf[PATH_MAX];
ASSERT_EQ(cwdbuf, getcwd(cwdbuf, PATH_MAX));
// Assert that GetCwd() and getcwd() return the same value.
string cwd(cwdbuf);
ASSERT_EQ(cwd, blaze_util::GetCwd());
// Change to a different directory.
ASSERT_EQ(0, chdir("/usr"));
// Assert that GetCwd() returns the new CWD.
ASSERT_EQ(string("/usr"), blaze_util::GetCwd());
ASSERT_EQ(0, chdir(cwd.c_str()));
ASSERT_EQ(cwd, blaze_util::GetCwd());
}
TEST(FilePosixTest, ChangeDirectory) {
// Retrieve the current working directory.
char old_wd[PATH_MAX];
ASSERT_EQ(old_wd, getcwd(old_wd, PATH_MAX));
// Change to a different directory and assert it was successful.
ASSERT_FALSE(blaze_util::ChangeDirectory("/non/existent/path"));
ASSERT_TRUE(blaze_util::ChangeDirectory("/usr"));
char new_wd[PATH_MAX];
ASSERT_EQ(new_wd, getcwd(new_wd, PATH_MAX));
ASSERT_EQ(string("/usr"), string(new_wd));
// Change back to the original CWD.
ASSERT_TRUE(blaze_util::ChangeDirectory(old_wd));
ASSERT_EQ(new_wd, getcwd(new_wd, PATH_MAX));
ASSERT_EQ(string(old_wd), string(new_wd));
}
class MockDirectoryEntryConsumer : public DirectoryEntryConsumer {
public:
void Consume(const std::string &name, bool is_directory) override {
entries.push_back(pair<string, bool>(name, is_directory));
}
vector<pair<string, bool> > entries;
};
TEST(FilePosixTest, ForEachDirectoryEntry) {
// Get the test's temp dir.
char* tmpdir_cstr = getenv("TEST_TMPDIR");
ASSERT_FALSE(tmpdir_cstr == NULL);
string tempdir(tmpdir_cstr);
ASSERT_FALSE(tempdir.empty());
if (tempdir.back() == '/') {
tempdir = tempdir.substr(0, tempdir.size() - 1);
}
// Create the root directory for the mock directory tree.
string root = tempdir + "/FilePosixTest.ForEachDirectoryEntry.root";
ASSERT_EQ(0, mkdir(root.c_str(), 0700));
// Names of mock files and directories.
string dir = root + "/dir";
string file = root + "/file";
string dir_sym = root + "/dir_sym";
string file_sym = root + "/file_sym";
string subfile = dir + "/subfile";
string subfile_through_sym = dir_sym + "/subfile";
// Create mock directory, file, and symlinks.
int fd = open(file.c_str(), O_CREAT, 0700);
ASSERT_GT(fd, 0);
close(fd);
ASSERT_EQ(0, mkdir(dir.c_str(), 0700));
ASSERT_EQ(0, symlink("dir", dir_sym.c_str()));
ASSERT_EQ(0, symlink("file", file_sym.c_str()));
fd = open(subfile.c_str(), O_CREAT, 0700);
ASSERT_GT(fd, 0);
close(fd);
// Assert that stat'ing the symlinks (with following them) point to the right
// filesystem entry types.
struct stat stat_buf;
ASSERT_EQ(0, stat(dir_sym.c_str(), &stat_buf));
ASSERT_TRUE(S_ISDIR(stat_buf.st_mode));
ASSERT_EQ(0, stat(file_sym.c_str(), &stat_buf));
ASSERT_FALSE(S_ISDIR(stat_buf.st_mode));
// Actual test: list the directory.
MockDirectoryEntryConsumer consumer;
ForEachDirectoryEntry(root, &consumer);
ASSERT_EQ(4, consumer.entries.size());
// Sort the collected directory entries.
struct {
bool operator()(const pair<string, bool> &a, const pair<string, bool> &b) {
return a.first < b.first;
}
} sort_pairs;
std::sort(consumer.entries.begin(), consumer.entries.end(), sort_pairs);
// Assert that the directory entries have the right name and type.
pair<string, bool> expected;
expected = pair<string, bool>(dir, true);
ASSERT_EQ(expected, consumer.entries[0]);
expected = pair<string, bool>(dir_sym, false);
ASSERT_EQ(expected, consumer.entries[1]);
expected = pair<string, bool>(file, false);
ASSERT_EQ(expected, consumer.entries[2]);
expected = pair<string, bool>(file_sym, false);
ASSERT_EQ(expected, consumer.entries[3]);
// Actual test: list a directory symlink.
consumer.entries.clear();
ForEachDirectoryEntry(dir_sym, &consumer);
ASSERT_EQ(1, consumer.entries.size());
expected = pair<string, bool>(subfile_through_sym, false);
ASSERT_EQ(expected, consumer.entries[0]);
// Actual test: list a path that's actually a file, not a directory.
consumer.entries.clear();
ForEachDirectoryEntry(file, &consumer);
ASSERT_TRUE(consumer.entries.empty());
// Cleanup: delete mock directory tree.
rmdir(subfile.c_str());
rmdir(dir.c_str());
unlink(dir_sym.c_str());
unlink(file.c_str());
unlink(file_sym.c_str());
rmdir(root.c_str());
}
} // namespace blaze_util
|
