TEST(dirent, scandir) {
// Get everything from /proc/self...
dirent** entries;
int entry_count = scandir("/proc/self", &entries, NULL, alphasort);
ASSERT_GE(entry_count, 0);
// Turn the directory entries into a set and vector of the names.
std::set<std::string> name_set;
std::vector<std::string> unsorted_name_list;
for (size_t i = 0; i < static_cast<size_t>(entry_count); ++i) {
name_set.insert(entries[i]->d_name);
unsorted_name_list.push_back(entries[i]->d_name);
free(entries[i]);
}
free(entries);
// No duplicates.
ASSERT_EQ(name_set.size(), unsorted_name_list.size());
// All entries sorted.
std::vector<std::string> sorted_name_list(unsorted_name_list);
std::sort(sorted_name_list.begin(), sorted_name_list.end());
ASSERT_EQ(sorted_name_list, unsorted_name_list);
CheckProcSelf(name_set);
}
TEST(dirent, scandir_scandir64) {
// Get everything from /proc/self...
dirent** entries;
int entry_count = scandir("/proc/self", &entries, NULL, alphasort);
ASSERT_GE(entry_count, 0);
dirent64** entries64;
int entry_count64 = scandir64("/proc/self", &entries64, NULL, alphasort64);
ASSERT_EQ(entry_count, entry_count64);
// Turn the directory entries into a set and vector of the names.
std::set<std::string> name_set;
std::vector<std::string> unsorted_name_list;
ScanEntries(entries, entry_count, name_set, unsorted_name_list);
// No duplicates.
ASSERT_EQ(name_set.size(), unsorted_name_list.size());
// All entries sorted.
std::vector<std::string> sorted_name_list(unsorted_name_list);
std::sort(sorted_name_list.begin(), sorted_name_list.end());
ASSERT_EQ(sorted_name_list, unsorted_name_list);
// scandir64 returned the same results as scandir.
std::set<std::string> name_set64;
std::vector<std::string> unsorted_name_list64;
ScanEntries(entries64, entry_count64, name_set64, unsorted_name_list64);
ASSERT_EQ(name_set, name_set64);
ASSERT_EQ(unsorted_name_list, unsorted_name_list64);
CheckProcSelf(name_set);
}
TEST(dirent, readdir) {
DIR* d = opendir("/proc/self");
ASSERT_TRUE(d != NULL);
std::set<std::string> name_set;
errno = 0;
dirent* e;
while ((e = readdir(d)) != NULL) {
name_set.insert(e->d_name);
}
// Reading to the end of the directory is not an error.
// readdir(3) returns NULL, but leaves errno as 0.
ASSERT_EQ(errno, 0);
ASSERT_EQ(closedir(d), 0);
CheckProcSelf(name_set);
}
TEST(dirent, readdir64_r) {
DIR* d = opendir("/proc/self");
ASSERT_TRUE(d != NULL);
std::set<std::string> name_set;
errno = 0;
dirent64 storage;
dirent64* e = NULL;
while (readdir64_r(d, &storage, &e) == 0 && e != NULL) {
name_set.insert(e->d_name);
}
// Reading to the end of the directory is not an error.
// readdir64_r(3) returns NULL, but leaves errno as 0.
ASSERT_EQ(0, errno);
ASSERT_EQ(closedir(d), 0);
CheckProcSelf(name_set);
}
