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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/dir_reader_posix.h"
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "base/logging.h"
#include "testing/gtest/include/gtest/gtest.h"
using base::DirReaderPosix;
namespace {
typedef testing::Test DirReaderPosixUnittest;
TEST(DirReaderPosixUnittest, Read) {
static const unsigned kNumFiles = 100;
if (DirReaderPosix::IsFallback())
return;
char kDirTemplate[] = "/tmp/org.chromium.dir-reader-posix-XXXXXX";
const char* dir = mkdtemp(kDirTemplate);
CHECK(dir);
const int prev_wd = open(".", O_RDONLY | O_DIRECTORY);
CHECK_GE(prev_wd, 0);
PCHECK(chdir(dir) == 0);
for (unsigned i = 0; i < kNumFiles; i++) {
char buf[16];
snprintf(buf, sizeof(buf), "%d", i);
const int fd = open(buf, O_CREAT | O_RDONLY | O_EXCL, 0600);
PCHECK(fd >= 0);
PCHECK(close(fd) == 0);
}
std::set<unsigned> seen;
DirReaderPosix reader(dir);
EXPECT_TRUE(reader.IsValid());
if (!reader.IsValid())
return;
bool seen_dot = false, seen_dotdot = false;
for (; reader.Next(); ) {
if (strcmp(reader.name(), ".") == 0) {
seen_dot = true;
continue;
}
if (strcmp(reader.name(), "..") == 0) {
seen_dotdot = true;
continue;
}
SCOPED_TRACE(testing::Message() << "reader.name(): " << reader.name());
char *endptr;
const unsigned long value = strtoul(reader.name(), &endptr, 10);
EXPECT_FALSE(*endptr);
EXPECT_LT(value, kNumFiles);
EXPECT_EQ(0u, seen.count(value));
seen.insert(value);
}
for (unsigned i = 0; i < kNumFiles; i++) {
char buf[16];
snprintf(buf, sizeof(buf), "%d", i);
PCHECK(unlink(buf) == 0);
}
PCHECK(rmdir(dir) == 0);
PCHECK(fchdir(prev_wd) == 0);
PCHECK(close(prev_wd) == 0);
EXPECT_TRUE(seen_dot);
EXPECT_TRUE(seen_dotdot);
EXPECT_EQ(kNumFiles, seen.size());
}
} // anonymous namespace
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