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// Copyright 2015 The Cobalt 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 <string>
#include "starboard/file.h"
#include "starboard/nplb/file_helpers.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace starboard {
namespace nplb {
namespace {
// Sets up an empty test fixture, required for typed tests.
template <class SbFileReadType>
class SbFileReadTest : public testing::Test {};
class SbFileReader {
public:
static int Read(SbFile file, char* data, int size) {
return SbFileRead(file, data, size);
}
};
class SbFileReaderAll {
public:
static int Read(SbFile file, char* data, int size) {
return SbFileReadAll(file, data, size);
}
};
typedef testing::Types<SbFileReader, SbFileReaderAll> SbFileReadTestTypes;
TYPED_TEST_CASE(SbFileReadTest, SbFileReadTestTypes);
const int kBufferLength = 16 * 1024;
TYPED_TEST(SbFileReadTest, InvalidFileErrors) {
char buffer[kBufferLength];
int result = TypeParam::Read(kSbFileInvalid, buffer, kBufferLength);
EXPECT_EQ(-1, result);
}
TYPED_TEST(SbFileReadTest, BasicReading) {
// Create a pattern file that is not an even multiple of the buffer size,
// but is over several times the size of the buffer.
const int kFileSize = kBufferLength * 16 / 3;
ScopedRandomFile random_file(kFileSize);
const std::string& filename = random_file.filename();
SbFile file =
SbFileOpen(filename.c_str(), kSbFileOpenOnly | kSbFileRead, NULL, NULL);
ASSERT_TRUE(SbFileIsValid(file));
// Create a bigger buffer than necessary, so we can test the memory around
// the portion given to SbFileRead.
const int kRealBufferLength = kBufferLength * 2;
char real_buffer[kRealBufferLength] = {0};
const int kBufferOffset = kBufferLength / 2;
char* buffer = real_buffer + kBufferOffset;
// Initialize to some arbitrary pattern so we can verify it later.
for (int i = 0; i < kRealBufferLength; ++i) {
real_buffer[i] = '\xCD';
}
// Read and check the whole file.
int total = 0;
int previous_total = 0;
int max = 0;
while (true) {
int bytes_read = TypeParam::Read(file, buffer, kBufferLength);
if (bytes_read == 0) {
break;
}
// Check that we didn't read more than the buffer size.
EXPECT_GE(kBufferLength, bytes_read);
// Check that we didn't get an error.
EXPECT_LT(0, bytes_read);
// Do some accounting to check later.
previous_total = total;
total += bytes_read;
if (bytes_read > max) {
max = bytes_read;
}
ScopedRandomFile::ExpectPattern(previous_total, buffer, bytes_read,
__LINE__);
}
// Check that we read the whole file.
EXPECT_EQ(kFileSize, total);
// check that we didn't write over any other parts of the buffer.
for (int i = 0; i < kBufferOffset; ++i) {
EXPECT_EQ('\xCD', real_buffer[i]);
}
for (int i = kBufferOffset + max; i < kRealBufferLength; ++i) {
EXPECT_EQ('\xCD', real_buffer[i]);
}
bool result = SbFileClose(file);
EXPECT_TRUE(result);
}
TYPED_TEST(SbFileReadTest, ReadPastEnd) {
const int kFileSize = kBufferLength;
ScopedRandomFile random_file(kFileSize);
const std::string& filename = random_file.filename();
SbFile file =
SbFileOpen(filename.c_str(), kSbFileOpenOnly | kSbFileRead, NULL, NULL);
ASSERT_TRUE(SbFileIsValid(file));
// Create a bigger buffer than necessary, so we can test the memory around
// the portion given to SbFileRead.
const int kRealBufferLength = kBufferLength * 2;
char real_buffer[kRealBufferLength] = {0};
const int kBufferOffset = kBufferLength / 2;
char* buffer = real_buffer + kBufferOffset;
// Initialize to some arbitrary pattern so we can verify it later.
for (int i = 0; i < kRealBufferLength; ++i) {
real_buffer[i] = '\xCD';
}
// Read off the end of the file.
int position = static_cast<int>(SbFileSeek(file, kSbFileFromEnd, 0));
EXPECT_EQ(kFileSize, position);
int bytes_read = TypeParam::Read(file, buffer, kBufferLength);
EXPECT_EQ(0, bytes_read);
for (int i = 0; i < kRealBufferLength; ++i) {
EXPECT_EQ('\xCD', real_buffer[i]);
}
bool result = SbFileClose(file);
EXPECT_TRUE(result);
}
TYPED_TEST(SbFileReadTest, ReadZeroBytes) {
const int kFileSize = kBufferLength;
ScopedRandomFile random_file(kFileSize);
const std::string& filename = random_file.filename();
SbFile file =
SbFileOpen(filename.c_str(), kSbFileOpenOnly | kSbFileRead, NULL, NULL);
ASSERT_TRUE(SbFileIsValid(file));
// Create a bigger buffer than necessary, so we can test the memory around
// the portion given to SbFileRead.
const int kRealBufferLength = kBufferLength * 2;
char real_buffer[kRealBufferLength] = {0};
const int kBufferOffset = kBufferLength / 2;
char* buffer = real_buffer + kBufferOffset;
// Initialize to some arbitrary pattern so we can verify it later.
for (int i = 0; i < kRealBufferLength; ++i) {
real_buffer[i] = '\xCD';
}
// Read zero bytes.
for (int i = 0; i < 10; ++i) {
int bytes_read = TypeParam::Read(file, buffer, 0);
EXPECT_EQ(0, bytes_read);
}
for (int i = 0; i < kRealBufferLength; ++i) {
EXPECT_EQ('\xCD', real_buffer[i]);
}
bool result = SbFileClose(file);
EXPECT_TRUE(result);
}
TYPED_TEST(SbFileReadTest, ReadFromMiddle) {
const int kFileSize = kBufferLength * 2;
ScopedRandomFile random_file(kFileSize);
const std::string& filename = random_file.filename();
SbFile file =
SbFileOpen(filename.c_str(), kSbFileOpenOnly | kSbFileRead, NULL, NULL);
ASSERT_TRUE(SbFileIsValid(file));
// Create a bigger buffer than necessary, so we can test the memory around
// the portion given to SbFileRead.
const int kRealBufferLength = kBufferLength * 2;
char real_buffer[kRealBufferLength] = {0};
const int kBufferOffset = kBufferLength / 2;
char* buffer = real_buffer + kBufferOffset;
// Initialize to some arbitrary pattern so we can verify it later.
for (int i = 0; i < kRealBufferLength; ++i) {
real_buffer[i] = '\xCD';
}
// Read from the middle of the file.
int position =
static_cast<int>(SbFileSeek(file, kSbFileFromBegin, kFileSize / 4));
EXPECT_EQ(kFileSize / 4, position);
int bytes_read = TypeParam::Read(file, buffer, kBufferLength);
EXPECT_GE(kBufferLength, bytes_read);
EXPECT_LT(0, bytes_read);
ScopedRandomFile::ExpectPattern(position, buffer, bytes_read, __LINE__);
for (int i = 0; i < kBufferOffset; ++i) {
EXPECT_EQ('\xCD', real_buffer[i]);
}
for (int i = kBufferOffset + bytes_read; i < kRealBufferLength; ++i) {
EXPECT_EQ('\xCD', real_buffer[i]);
}
bool result = SbFileClose(file);
EXPECT_TRUE(result);
}
} // namespace
} // namespace nplb
} // namespace starboard