draco/core/draco_test_utils.cc
2017-01-12 16:50:49 -08:00

82 lines
2.7 KiB
C++

// Copyright 2016 The Draco Authors.
//
// 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 "core/draco_test_utils.h"
#include <fstream>
#include "core/macros.h"
#include "draco_test_base.h"
namespace draco {
namespace {
static constexpr char kTestDataDir[] = DRACO_TEST_DATA_DIR;
} // namespace
std::string GetTestFileFullPath(const std::string &file_name) {
return std::string(kTestDataDir) + std::string("/") + file_name;
}
bool GenerateGoldenFile(const std::string &golden_file_name, const void *data,
int data_size) {
// TODO(ostava): This will work only when the test is executed locally
// from blaze-bin/ folder. We should look for ways how to
// make it work when it's run using the "blaze test" command.
const std::string path = GetTestFileFullPath(golden_file_name);
std::ofstream file(path, std::ios::binary);
if (!file)
return false;
file.write(static_cast<const char *>(data), data_size);
file.close();
return true;
}
bool CompareGoldenFile(const std::string &golden_file_name, const void *data,
int data_size) {
const std::string golden_path = GetTestFileFullPath(golden_file_name);
std::ifstream in_file(golden_path);
if (!in_file || data_size < 0)
return false;
const char *const data_c8 = static_cast<const char *>(data);
constexpr int buffer_size = 1024;
char buffer[buffer_size];
size_t extracted_size = 0;
size_t remaining_data_size = data_size;
int offset = 0;
while ((extracted_size = in_file.read(buffer, buffer_size).gcount()) > 0) {
if (remaining_data_size <= 0)
break; // Input and golden sizes are different.
size_t size_to_check = extracted_size;
if (remaining_data_size < size_to_check)
size_to_check = remaining_data_size;
for (uint32_t i = 0; i < size_to_check; ++i) {
if (buffer[i] != data_c8[offset++]) {
LOG(INFO) << "Test output differed from golden file at byte "
<< offset - 1;
return false;
}
}
remaining_data_size -= extracted_size;
}
if (remaining_data_size != extracted_size) {
// Both of these values should be 0 at the end.
LOG(INFO) << "Test output size differed from golden file size";
return false;
}
return true;
}
} // namespace draco