cpp-shared-random-generator/test/random_test.cxx

//
//  random_test.cpp
//  shared_random_generator-test
//
//  Created by Sam Jaffe on 8/14/20.
//  Copyright © 2020 Sam Jaffe. All rights reserved.
//

#include "random/random.h"

#include "random/distribution.h"

#include "random/mock/mock_device.h"
#include "xcode_gtest_helper.h"

using testing::_;

using engine::random::Index;
using engine::random::MockDevice;
using engine::random::Uniform;

TEST(RandomTest, UsesInt32Type) {
  auto mock = std::make_shared<MockDevice>();
  engine::random::Random generator{mock};

  EXPECT_CALL(*mock, apply_int32_t(_)).Times(1);
  generator(Uniform(-10, 10));
}

TEST(RandomTest, UsesUInt32Type) {
  auto mock = std::make_shared<MockDevice>();
  engine::random::Random generator{mock};

  EXPECT_CALL(*mock, apply_uint32_t(_)).Times(1);
  generator(Uniform(0u, 10u));
}

TEST(RandomTest, UsesSizeType) {
  auto mock = std::make_shared<MockDevice>();
  engine::random::Random generator{mock};

  EXPECT_CALL(*mock, apply_size_t(_)).Times(1);
  generator(Index(10));
}

TEST(RandomTest, UsesDoubleType) {
  auto mock = std::make_shared<MockDevice>();
  engine::random::Random generator{mock};

  EXPECT_CALL(*mock, apply_double(_)).Times(1);
  generator(Uniform(0.0, 10.0));
}