3rdparty/stout/tests/some_tests.cpp

// 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 <map>
#include <string>

#include <gtest/gtest.h>

#include <stout/gtest.hpp>
#include <stout/none.hpp>
#include <stout/option.hpp>
#include <stout/result.hpp>
#include <stout/some.hpp>
#include <stout/try.hpp>

using std::string;

TEST(SomeTest, Some)
{
  Option<int> o1 = Some(42);
  EXPECT_SOME(o1);
  EXPECT_EQ(42, o1.get());

  Result<int> r1 = Some(42);
  EXPECT_SOME(r1);
  EXPECT_EQ(42, r1.get());

  Try<Option<int>> t1 = Some(42);
  ASSERT_SOME(t1);
  EXPECT_SOME(t1.get());
  EXPECT_EQ(42, t1->get());
  t1 = None();
  ASSERT_SOME(t1);
  EXPECT_NONE(t1.get());

  Try<Result<int>> t2 = Some(42);
  ASSERT_SOME(t2);
  EXPECT_SOME(t2.get());
  EXPECT_EQ(42, t2->get());

  Option<Result<int>> o2 = Some(42);
  ASSERT_SOME(o2);
  EXPECT_SOME(o2.get());
  EXPECT_EQ(42, o2->get());

  Option<Result<int>> o3 = Some(Some(42));
  ASSERT_SOME(o3);
  EXPECT_SOME(o3.get());
  EXPECT_EQ(42, o3->get());

  Result<Option<int>> r2 = Some(42);
  ASSERT_SOME(r2);
  EXPECT_SOME(r2.get());
  EXPECT_EQ(42, r2->get());

  Result<Option<int>> r3 = Some(Some(42));
  ASSERT_SOME(r3);
  EXPECT_SOME(r3.get());
  EXPECT_EQ(42, r3->get());

  Option<string> o4 = Some("hello");
  EXPECT_SOME(o4);
  EXPECT_EQ("hello", o4.get());

  Result<string> r4 = Some("world");
  EXPECT_SOME(r4);
  EXPECT_EQ("world", r4.get());

  std::map<string, Option<string>> values;
  values["no-debug"] = None();
  values["debug"] = None();
  values["debug"] = Some("true");
  values["debug"] = Some("false");
  values["name"] = Some("frank");
}