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/*
 *
 * Copyright 2017 gRPC 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 "src/core/lib/gprpp/orphanable.h"

#include <gtest/gtest.h>

#include "src/core/lib/gprpp/memory.h"
#include "test/core/util/test_config.h"

namespace grpc_core {
namespace testing {
namespace {

class Foo : public Orphanable {
 public:
  Foo() : Foo(0) {}
  explicit Foo(int value) : value_(value) {}
  void Orphan() override { Delete(this); }
  int value() const { return value_; }

 private:
  int value_;
};

TEST(Orphanable, Basic) {
  Foo* foo = New<Foo>();
  foo->Orphan();
}

TEST(OrphanablePtr, Basic) {
  OrphanablePtr<Foo> foo(New<Foo>());
  EXPECT_EQ(0, foo->value());
}

TEST(MakeOrphanable, DefaultConstructor) {
  auto foo = MakeOrphanable<Foo>();
  EXPECT_EQ(0, foo->value());
}

TEST(MakeOrphanable, WithParameters) {
  auto foo = MakeOrphanable<Foo>(5);
  EXPECT_EQ(5, foo->value());
}

class Bar : public InternallyRefCounted {
 public:
  Bar() : Bar(0) {}
  explicit Bar(int value) : value_(value) {}
  void Orphan() override { Unref(); }
  int value() const { return value_; }

  void StartWork() { Ref(); }
  void FinishWork() { Unref(); }

 private:
  int value_;
};

TEST(OrphanablePtr, InternallyRefCounted) {
  auto bar = MakeOrphanable<Bar>();
  bar->StartWork();
  bar->FinishWork();
}

// Note: We use DebugOnlyTraceFlag instead of TraceFlag to ensure that
// things build properly in both debug and non-debug cases.
DebugOnlyTraceFlag baz_tracer(true, "baz");

class Baz : public InternallyRefCountedWithTracing {
 public:
  Baz() : Baz(0) {}
  explicit Baz(int value)
      : InternallyRefCountedWithTracing(&baz_tracer), value_(value) {}
  void Orphan() override { Unref(); }
  int value() const { return value_; }

  void StartWork() { Ref(DEBUG_LOCATION, "work"); }
  void FinishWork() { Unref(DEBUG_LOCATION, "work"); }

 private:
  int value_;
};

TEST(OrphanablePtr, InternallyRefCountedWithTracing) {
  auto baz = MakeOrphanable<Baz>();
  baz->StartWork();
  baz->FinishWork();
}

}  // namespace
}  // namespace testing
}  // namespace grpc_core

int main(int argc, char** argv) {
  grpc_test_init(argc, argv);
  ::testing::InitGoogleTest(&argc, argv);
  return RUN_ALL_TESTS();
}