/*
 * 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 <numeric>

#include <folly/portability/GTest.h>

#include <thrift/lib/cpp2/protocol/DebugProtocol.h>
#include <thrift/lib/cpp2/protocol/test/gen-cpp2/Module_types.h>
#include <thrift/lib/cpp2/protocol/test/gen-cpp2/Module_types_custom_protocol.h>

namespace apache::thrift::protocol {

using namespace test;

template <class Set>
void factor(int64_t n, Set& factors) {
  for (int64_t d = 1; d * d <= n; ++d) {
    auto div = std::div(n, d);
    if (div.rem == 0) {
      factors.insert(d);
      factors.insert(div.quot);
    }
  }
}

TEST(DebugProtocolTest, Containers) {
  DebugSortedAssociative sorted;
  DebugHashedAssociative hashed;
  for (int64_t n = 1; n < 50; ++n) {
    factor(n, sorted.value_ref()[n]);
    factor(n, hashed.value_ref()[n]);
  }
  auto debugHashed = debugString(hashed);
  auto debugSorted = debugString(sorted);
  folly::StringPiece bodyHashed = debugHashed;
  folly::StringPiece bodySorted = debugSorted;
  bodyHashed.split_step('\n');
  bodySorted.split_step('\n');
  EXPECT_EQ(bodyHashed.str(), bodySorted.str());
}

TEST(DebugProtocolTest, NoIndices) {
  DebugList debugList;
  auto& list = *debugList.aList_ref();
  list.resize(100);
  std::iota(list.begin(), list.end(), 0);
  DebugProtocolWriter::Options options;
  options.skipListIndices = true;
  auto debug1 = debugString(debugList, options);
  list.erase(list.begin() + 1);
  auto debug2 = debugString(debugList, options);
  folly::StringPiece sp1 = debug1;
  folly::StringPiece sp2 = debug2;
  EXPECT_NE(debug1, debug2);
  EXPECT_EQ(
      sp1.subpiece(sp1.size() - 100).str(),
      sp2.subpiece(sp2.size() - 100).str());
}

} // namespace apache::thrift::protocol