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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.
// Writing is partially tested by some of the file helpers that create files for
// the tests to operate on.
#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 SbFileWriteType>
class SbFileWriteTest : public testing::Test {};
class SbFileWriter {
public:
static int Write(SbFile file, char* data, int size) {
return SbFileWrite(file, data, size);
}
};
class SbFileWriterAll {
public:
static int Write(SbFile file, char* data, int size) {
return SbFileWriteAll(file, data, size);
}
};
typedef testing::Types<SbFileWriter, SbFileWriterAll> SbFileWriteTestTypes;
TYPED_TEST_CASE(SbFileWriteTest, SbFileWriteTestTypes);
const int kBufferLength = 16 * 1024;
TYPED_TEST(SbFileWriteTest, InvalidFileErrors) {
char buffer[kBufferLength] = {0};
int result = TypeParam::Write(kSbFileInvalid, buffer, kBufferLength);
EXPECT_EQ(-1, result);
}
TYPED_TEST(SbFileWriteTest, BasicWriting) {
// Choose a file size 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(0, ScopedRandomFile::kDontCreate);
const std::string& filename = random_file.filename();
SbFile file = SbFileOpen(filename.c_str(),
kSbFileCreateAlways | kSbFileWrite | 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.
char buffer[kBufferLength] = {0};
// Initialize to some arbitrary pattern so we can verify it later.
for (int i = 0; i < kBufferLength; ++i) {
buffer[i] = static_cast<char>(i & 0xFF);
}
// Read and check the whole file.
int total = 0;
while (true) {
if (total == kFileSize) {
break;
}
int remaining = kFileSize - total;
int to_write = remaining < kBufferLength ? remaining : kBufferLength;
int bytes_written = TypeParam::Write(
file, buffer + (total % kBufferLength), to_write);
// Check that we didn't write more than the buffer size.
EXPECT_GE(to_write, bytes_written);
// Check that we didn't get an error.
ASSERT_LT(0, bytes_written);
total += bytes_written;
EXPECT_EQ(total, SbFileSeek(file, kSbFileFromCurrent, 0));
}
// Tests reading and writing from same opened file.
bool result = SbFileFlush(file);
ASSERT_TRUE(result);
int position = static_cast<int>(SbFileSeek(file, kSbFileFromBegin, 0));
ASSERT_EQ(0, position);
// Read and check the whole file.
total = 0;
int previous_total = 0;
while (true) {
int bytes_read = SbFileReadAll(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.
ASSERT_LT(0, bytes_read);
// Do some accounting to check later.
previous_total = total;
total += bytes_read;
ScopedRandomFile::ExpectPattern(previous_total, buffer, bytes_read,
__LINE__);
}
// Check that we read the whole file.
EXPECT_EQ(kFileSize, total);
result = SbFileClose(file);
EXPECT_TRUE(result);
}
TYPED_TEST(SbFileWriteTest, WriteZeroBytes) {
ScopedRandomFile random_file(0, ScopedRandomFile::kDontCreate);
const std::string& filename = random_file.filename();
SbFile file = SbFileOpen(filename.c_str(), kSbFileCreateOnly | kSbFileWrite,
NULL, NULL);
ASSERT_TRUE(SbFileIsValid(file));
char buffer[kBufferLength] = {0};
// Write zero bytes.
for (int i = 0; i < 10; ++i) {
int bytes_written = TypeParam::Write(file, buffer, 0);
EXPECT_EQ(0, bytes_written);
}
bool result = SbFileClose(file);
EXPECT_TRUE(result);
file =
SbFileOpen(filename.c_str(), kSbFileOpenOnly | kSbFileRead, NULL, NULL);
ASSERT_TRUE(SbFileIsValid(file));
SbFileInfo info;
result = SbFileGetInfo(file, &info);
EXPECT_TRUE(result);
EXPECT_EQ(0, info.size);
result = SbFileClose(file);
EXPECT_TRUE(result);
}
} // namespace
} // namespace nplb
} // namespace starboard