/*
 * 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 <thrift/compiler/ast/t_enum.h>

#include <stdexcept>
#include <string>
#include <vector>

#include <folly/portability/GMock.h>
#include <folly/portability/GTest.h>
#include <thrift/compiler/ast/t_enum_value.h>
#include <thrift/compiler/ast/t_program.h>

namespace apache::thrift::compiler {
namespace {

TEST(TEnumTest, Unused) {
  t_program program("path/to/program.thrift");
  program.set_package(t_package{"test.dev/foo/bar"});

  t_enum& def = program.add_def(std::make_unique<t_enum>(&program, "Enum"));
  EXPECT_EQ(def.unused(), 113);
  def.append_value(std::make_unique<t_enum_value>("zero", 0));
  def.append_value(std::make_unique<t_enum_value>("two", 2));
  def.append_value(std::make_unique<t_enum_value>("one", 1));
  def.append_value(std::make_unique<t_enum_value>("ntwo", -2));
  def.append_value(std::make_unique<t_enum_value>(
      "max", std::numeric_limits<int32_t>::max()));
  EXPECT_EQ(def.unused(), 113);

  def.append_value(std::make_unique<t_enum_value>("t1", 113));
  EXPECT_EQ(def.unused(), 113 + 1);
  def.append_value(std::make_unique<t_enum_value>("t2", 113 + 2));
  def.append_value(std::make_unique<t_enum_value>("t3", 113 + 3));
  def.append_value(std::make_unique<t_enum_value>("t4", 113 + 5));
  EXPECT_EQ(def.unused(), 113 + 1);
  def.append_value(std::make_unique<t_enum_value>("t5", def.unused()));
  EXPECT_EQ(def.unused(), 113 + 4);
  def.append_value(std::make_unique<t_enum_value>("t6", def.unused()));
  EXPECT_EQ(def.unused(), 113 + 6);
  def.append_value(std::make_unique<t_enum_value>("t7", def.unused()));
  EXPECT_EQ(def.unused(), 113 + 7);
}

} // namespace
} // namespace apache::thrift::compiler