/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * 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 <glog/logging.h>

#include <folly/portability/GTest.h>

#include <thrift/lib/cpp2/frozen/FrozenUtil.h>
#include <thrift/lib/cpp2/frozen/test/gen-cpp2/Compatibility_constants.h>
#include <thrift/lib/cpp2/frozen/test/gen-cpp2/Compatibility_layouts.h>

DEFINE_bool(write_test_cases, false, "Write files, too");

using namespace apache::thrift::frozen;
using namespace apache::thrift::test;

class CompatibilityTest : public ::testing::TestWithParam<Case> {
 public:
  static std::string filePath(folly::StringPiece name) {
    return folly::to<std::string>(
        "thrift/lib/cpp2/frozen/test/compatibility/", name);
  }
};

TEST_P(CompatibilityTest, Write) {
  if (!FLAGS_write_test_cases) {
    return;
  }
  auto test = GetParam();
  if (test.root()) {
    freezeToFile(
        *test.root(),
        folly::File(
            filePath(*test.name()).c_str(),
            O_RDWR | O_TRUNC | O_CREAT | O_EXCL));
  }
}

TEST_P(CompatibilityTest, Read) {
  auto test = GetParam();
  auto path = folly::to<std::string>(
      "thrift/lib/cpp2/frozen/test/compatibility/", *test.name());

  try {
    auto root = mapFrozen<Root>(folly::File(filePath(*test.name()).c_str()));
    EXPECT_FALSE(*test.fails());
    EXPECT_EQ(*test.root(), root.thaw());
  } catch (const std::exception&) {
    EXPECT_TRUE(*test.fails());
  }
}

INSTANTIATE_TEST_CASE_P(
    AllCases,
    CompatibilityTest,
    ::testing::ValuesIn(Compatibility_constants::kTestCases()));