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/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#ifndef AOM_TEST_FUNCTION_EQUIVALENCE_TEST_H_
#define AOM_TEST_FUNCTION_EQUIVALENCE_TEST_H_
#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
#include "test/acm_random.h"
#include "test/clear_system_state.h"
#include "test/util.h"
using libaom_test::ACMRandom;
namespace libaom_test {
// Base class for tests that compare 2 implementations of the same function
// for equivalence. The template parameter should be pointer to a function
// that is being tested.
//
// The test takes a 3-parameters encapsulating struct 'FuncParam', containing:
// - Pointer to reference function
// - Pointer to tested function
// - Integer bit depth (default to 0).
//
// These values are then accessible in the tests as member of params_:
// params_.ref_func, params_.tst_func, and params_.bit_depth.
//
template <typename T>
struct FuncParam {
FuncParam(T ref = NULL, T tst = NULL, int bit_depth = 0)
: ref_func(ref), tst_func(tst), bit_depth(bit_depth) {}
T ref_func;
T tst_func;
int bit_depth;
};
template <typename T>
std::ostream &operator<<(std::ostream &os, const FuncParam<T> &p) {
return os << "bit_depth:" << p.bit_depth
<< " function:" << reinterpret_cast<const void *>(p.ref_func)
<< " function:" << reinterpret_cast<const void *>(p.tst_func);
}
template <typename T>
class FunctionEquivalenceTest : public ::testing::TestWithParam<FuncParam<T> > {
public:
FunctionEquivalenceTest() : rng_(ACMRandom::DeterministicSeed()) {}
virtual ~FunctionEquivalenceTest() {}
virtual void SetUp() { params_ = this->GetParam(); }
virtual void TearDown() { libaom_test::ClearSystemState(); }
protected:
ACMRandom rng_;
FuncParam<T> params_;
};
} // namespace libaom_test
#endif // AOM_TEST_FUNCTION_EQUIVALENCE_TEST_H_
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