blob: edf2b29127a5ede58a160afb94efcde5a36d9a5a [file] [log] [blame]
/*
* Copyright 2016 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <limits>
#include <memory>
#include <string>
#include "webrtc/base/gunit.h"
#include "webrtc/base/file.h"
#include "webrtc/test/testsupport/fileutils.h"
#if defined(WEBRTC_WIN)
#include "webrtc/base/win32.h"
#else // if defined(WEBRTC_WIN)
#include <errno.h>
#endif
namespace rtc {
int LastError() {
#if defined(WEBRTC_WIN)
return ::GetLastError();
#else
return errno;
#endif
}
bool VerifyBuffer(uint8_t* buffer, size_t length, uint8_t start_value) {
for (size_t i = 0; i < length; ++i) {
uint8_t val = start_value++;
EXPECT_EQ(val, buffer[i]);
if (buffer[i] != val)
return false;
}
// Prevent the same buffer from being verified multiple times simply
// because some operation that should have written to it failed
memset(buffer, 0, length);
return true;
}
class FileTest : public ::testing::Test {
protected:
std::string path_;
void SetUp() {
path_ = webrtc::test::TempFilename(webrtc::test::OutputPath(), "test_file");
ASSERT_FALSE(path_.empty());
}
rtc::File OpenTempFile() { return rtc::File::Open(path_); }
void TearDown() { rtc::RemoveFile(path_); }
};
TEST_F(FileTest, DoubleClose) {
File file = OpenTempFile();
ASSERT_TRUE(file.IsOpen()) << "Error: " << LastError();
EXPECT_TRUE(file.Close());
EXPECT_FALSE(file.Close());
}
TEST_F(FileTest, SimpleReadWrite) {
File file = OpenTempFile();
ASSERT_TRUE(file.IsOpen()) << "Error: " << LastError();
uint8_t data[100] = {0};
uint8_t out[100] = {0};
for (int i = 0; i < 100; ++i) {
data[i] = i;
}
EXPECT_EQ(10u, file.Write(data, 10));
EXPECT_TRUE(file.Seek(0));
EXPECT_EQ(10u, file.Read(out, 10));
EXPECT_TRUE(VerifyBuffer(out, 10, 0));
EXPECT_TRUE(file.Seek(0));
EXPECT_EQ(100u, file.Write(data, 100));
EXPECT_TRUE(file.Seek(0));
EXPECT_EQ(100u, file.Read(out, 100));
EXPECT_TRUE(VerifyBuffer(out, 100, 0));
EXPECT_TRUE(file.Seek(1));
EXPECT_EQ(50u, file.Write(data, 50));
EXPECT_EQ(50u, file.Write(data + 50, 50));
EXPECT_TRUE(file.Seek(1));
EXPECT_EQ(100u, file.Read(out, 100));
EXPECT_TRUE(VerifyBuffer(out, 100, 0));
}
TEST_F(FileTest, ReadWriteClose) {
File file = OpenTempFile();
ASSERT_TRUE(file.IsOpen()) << "Error: " << LastError();
uint8_t data[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
uint8_t out[10] = {0};
EXPECT_EQ(10u, file.Write(data, 10));
EXPECT_TRUE(file.Close());
File file2 = OpenTempFile();
ASSERT_TRUE(file2.IsOpen()) << "Error: " << LastError();
EXPECT_EQ(10u, file2.Read(out, 10));
EXPECT_TRUE(VerifyBuffer(out, 10, 0));
}
TEST_F(FileTest, RandomAccessRead) {
File file = OpenTempFile();
ASSERT_TRUE(file.IsOpen()) << "Error: " << LastError();
uint8_t data[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
uint8_t out[10] = {0};
EXPECT_EQ(10u, file.Write(data, 10));
EXPECT_EQ(4u, file.ReadAt(out, 4, 0));
EXPECT_TRUE(VerifyBuffer(out, 4, 0));
EXPECT_EQ(4u, file.ReadAt(out, 4, 4));
EXPECT_TRUE(VerifyBuffer(out, 4, 4));
EXPECT_EQ(5u, file.ReadAt(out, 5, 5));
EXPECT_TRUE(VerifyBuffer(out, 5, 5));
}
TEST_F(FileTest, RandomAccessReadWrite) {
File file = OpenTempFile();
ASSERT_TRUE(file.IsOpen()) << "Error: " << LastError();
uint8_t data[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
uint8_t out[10] = {0};
EXPECT_EQ(10u, file.Write(data, 10));
EXPECT_TRUE(file.Seek(4));
EXPECT_EQ(4u, file.WriteAt(data, 4, 4));
EXPECT_EQ(4u, file.ReadAt(out, 4, 4));
EXPECT_TRUE(VerifyBuffer(out, 4, 0));
EXPECT_EQ(2u, file.WriteAt(data, 2, 8));
EXPECT_EQ(2u, file.ReadAt(out, 2, 8));
EXPECT_TRUE(VerifyBuffer(out, 2, 0));
}
} // namespace rtc