GTestUtils.hpp

Go to the documentation of this file.

// @HEADER
// ***********************************************************************
//
//                           Sacado Package
//                 Copyright (2006) Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
// USA
// Questions? Contact David M. Gay (dmgay@sandia.gov) or Eric T. Phipps
// (etphipp@sandia.gov).
//
// ***********************************************************************
// @HEADER
 
// gtest includes
#include <gtest/gtest.h>
 
struct CompareFloats {
public:
  double tol_a, tol_r;
 
  CompareFloats(double tol_a_, double tol_r_) : tol_a(tol_a_), tol_r(tol_r_) {}
 
  template <typename ScalarType>
  bool operator() (const ScalarType& a, const ScalarType& b) {
    return std::abs(a-b) < tol_a + tol_r*std::abs(a);
  }
};
 
struct CompareFads {
public:
  CompareFloats cmp;
 
  CompareFads(double tol_a, double tol_r) : cmp(tol_a, tol_r) {}
 
  template <typename FadType1, typename FadType2>
  bool operator() (const FadType1& a, const FadType2& b)
  {
    if (a.size() != b.size()) return false;
    if (a.hasFastAccess() != b.hasFastAccess()) return false;
    if (!cmp(a.val(), b.val())) return false;
    for (int i=0; i<a.size(); ++i) {
      if (!cmp(a.dx(i), b.dx(i))) return false;
      if (!cmp(a.fastAccessDx(i), b.fastAccessDx(i))) return false;
    }
    return true;
  }
 
  template <typename FadType1, typename FadType2>
  ::testing::AssertionResult operator() (const char* a_expr, const char* b_expr,
                                         const FadType1& a, const FadType2& b)
  {
    bool success = (*this)(a,b);
    if (success) return ::testing::AssertionSuccess();
    return ::testing::AssertionFailure()
      << "Fad's do not match!" << std::endl
      << a_expr << " = " << a << std::endl
      << b_expr << " = " << b << std::endl;
  }
};
 
struct CompareNestedFads {
public:
  CompareFads cmp;
 
  CompareNestedFads(double tol_a, double tol_r) : cmp(tol_a, tol_r) {}
 
  template <typename FadType1, typename FadType2>
  bool operator() (const FadType1& a, const FadType2& b)
  {
    if (a.size() != b.size()) return false;
    if (a.hasFastAccess() != b.hasFastAccess()) return false;
    if (!cmp(a.val(), b.val())) return false;
    for (int i=0; i<a.size(); ++i) {
      if (!cmp(a.dx(i), b.dx(i))) return false;
      if (!cmp(a.fastAccessDx(i), b.fastAccessDx(i))) return false;
    }
    return true;
  }
 
  template <typename FadType1, typename FadType2>
  ::testing::AssertionResult operator() (const char* a_expr, const char* b_expr,
                                         const FadType1& a, const FadType2& b)
  {
    bool success = (*this)(a,b);
    if (success) return ::testing::AssertionSuccess();
    return ::testing::AssertionFailure()
      << "Fad's do not match!" << std::endl
      << a_expr << " = " << a << std::endl
      << b_expr << " = " << b << std::endl;
  }
};
 
#define COMPARE_VALUES(a, b)                                    \
  ASSERT_PRED2(CompareFloats(this->tol_a, this->tol_r), a, b);
 
#define COMPARE_FADS(a, b)                                      \
  ASSERT_PRED_FORMAT2(CompareFads(this->tol_a, this->tol_r), a, b);
 
#define COMPARE_NESTED_FADS(a, b)                               \
  ASSERT_PRED_FORMAT2(CompareNestedFads(this->tol_a, this->tol_r), a, b);