1 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "base/dir_reader_posix.h"
6
7 #include <fcntl.h>
8 #include <stdio.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include <unistd.h>
12
13 #include "base/logging.h"
14 #include "testing/gtest/include/gtest/gtest.h"
15
16 using base::DirReaderPosix;
17
18 namespace {
19 typedef testing::Test DirReaderPosixUnittest;
20
TEST(DirReaderPosixUnittest,Read)21 TEST(DirReaderPosixUnittest, Read) {
22 static const unsigned kNumFiles = 100;
23
24 if (DirReaderPosix::IsFallback())
25 return;
26
27 char kDirTemplate[] = "/tmp/org.chromium.dir-reader-posix-XXXXXX";
28 const char* dir = mkdtemp(kDirTemplate);
29 CHECK(dir);
30
31 const int prev_wd = open(".", O_RDONLY | O_DIRECTORY);
32 CHECK_GE(prev_wd, 0);
33
34 PCHECK(chdir(dir) == 0);
35
36 for (unsigned i = 0; i < kNumFiles; i++) {
37 char buf[16];
38 snprintf(buf, sizeof(buf), "%d", i);
39 const int fd = open(buf, O_CREAT | O_RDONLY | O_EXCL, 0600);
40 PCHECK(fd >= 0);
41 PCHECK(close(fd) == 0);
42 }
43
44 std::set<unsigned> seen;
45
46 DirReaderPosix reader(dir);
47 EXPECT_TRUE(reader.IsValid());
48
49 if (!reader.IsValid())
50 return;
51
52 bool seen_dot = false, seen_dotdot = false;
53
54 for (; reader.Next(); ) {
55 if (strcmp(reader.name(), ".") == 0) {
56 seen_dot = true;
57 continue;
58 }
59 if (strcmp(reader.name(), "..") == 0) {
60 seen_dotdot = true;
61 continue;
62 }
63
64 SCOPED_TRACE(testing::Message() << "reader.name(): " << reader.name());
65
66 char *endptr;
67 const unsigned long value = strtoul(reader.name(), &endptr, 10);
68
69 EXPECT_FALSE(*endptr);
70 EXPECT_LT(value, kNumFiles);
71 EXPECT_EQ(0u, seen.count(value));
72 seen.insert(value);
73 }
74
75 for (unsigned i = 0; i < kNumFiles; i++) {
76 char buf[16];
77 snprintf(buf, sizeof(buf), "%d", i);
78 PCHECK(unlink(buf) == 0);
79 }
80
81 PCHECK(rmdir(dir) == 0);
82
83 PCHECK(fchdir(prev_wd) == 0);
84 PCHECK(close(prev_wd) == 0);
85
86 EXPECT_TRUE(seen_dot);
87 EXPECT_TRUE(seen_dotdot);
88 EXPECT_EQ(kNumFiles, seen.size());
89 }
90
91 } // anonymous namespace
92