text: /*
   * Copyright 2017 Facebook, Inc.
   *
   * 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 <folly/Memory.h>
  #include <folly/Try.h>
  #include <folly/portability/GTest.h>
  
  using namespace folly;
  
  TEST(Try, basic) {
    class A {
     public:
      A(int x) : x_(x) {}
  
      int x() const {
        return x_;
      }
     private:
      int x_;
    };
  
    A a(5);
    Try<A> t_a(std::move(a));
  
    Try<Unit> t_void;
  
    EXPECT_EQ(5, t_a.value().x());
  }
  
  // Make sure we can copy Trys for copyable types
  TEST(Try, copy) {
    Try<int> t;
    auto t2 = t;
  }
  
  // But don't choke on move-only types
  TEST(Try, moveOnly) {
    Try<std::unique_ptr<int>> t;
    std::vector<Try<std::unique_ptr<int>>> v;
    v.reserve(10);
  }
  
  TEST(Try, makeTryWith) {
    auto func = []() {
      return folly::make_unique<int>(1);
    };
  
    auto result = makeTryWith(func);
    EXPECT_TRUE(result.hasValue());
    EXPECT_EQ(*result.value(), 1);
  }
  
  TEST(Try, makeTryWithThrow) {
    auto func = []() -> std::unique_ptr<int> {
      throw std::runtime_error("Runtime");
    };
  
    auto result = makeTryWith(func);
    EXPECT_TRUE(result.hasException<std::runtime_error>());
  }
  
  TEST(Try, makeTryWithVoid) {
    auto func = []() {
      return;
    };
  
    auto result = makeTryWith(func);
    EXPECT_TRUE(result.hasValue());
  }
  
  TEST(Try, makeTryWithVoidThrow) {
    auto func = []() {
      throw std::runtime_error("Runtime");
    };
  
    auto result = makeTryWith(func);
    EXPECT_TRUE(result.hasException<std::runtime_error>());
  }
  