chromium/third_party/abseil-cpp/absl/random/internal/mock_helpers.h

//
// Copyright 2019 The Abseil 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
//
//      https://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.

#ifndef ABSL_RANDOM_INTERNAL_MOCK_HELPERS_H_
#define ABSL_RANDOM_INTERNAL_MOCK_HELPERS_H_

#include <utility>

#include "absl/base/config.h"
#include "absl/base/internal/fast_type_id.h"
#include "absl/types/optional.h"

namespace absl {
ABSL_NAMESPACE_BEGIN
namespace random_internal {

// A no-op validator meeting the ValidatorT requirements for MockHelpers.
//
// Custom validators should follow a similar structure, passing the type to
// MockHelpers::MockFor<KeyT>(m, CustomValidatorT()).
struct NoOpValidator { … };

// MockHelpers works in conjunction with MockOverloadSet, MockingBitGen, and
// BitGenRef to enable the mocking capability for absl distribution functions.
//
// MockingBitGen registers mocks based on the typeid of a mock signature, KeyT,
// which is used to generate a unique id.
//
// KeyT is a signature of the form:
//   result_type(discriminator_type, std::tuple<args...>)
// The mocked function signature will be composed from KeyT as:
//   result_type(args...)
//
class MockHelpers { … };

}  // namespace random_internal
ABSL_NAMESPACE_END
}  // namespace absl

#endif  // ABSL_RANDOM_INTERNAL_MOCK_HELPERS_H_