src/testutils/filematchers.h

   1 /*
   2  * This file is part of the GROMACS molecular simulation package.
   3  *
   4  * Copyright (c) 2017,2018,2019, by the GROMACS development team, led by
   5  * Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
   6  * and including many others, as listed in the AUTHORS file in the
   7  * top-level source directory and at http://www.gromacs.org.
   8  *
   9  * GROMACS is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public License
  11  * as published by the Free Software Foundation; either version 2.1
  12  * of the License, or (at your option) any later version.
  13  *
  14  * GROMACS is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with GROMACS; if not, see
  21  * http://www.gnu.org/licenses, or write to the Free Software Foundation,
  22  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
  23  *
  24  * If you want to redistribute modifications to GROMACS, please
  25  * consider that scientific software is very special. Version
  26  * control is crucial - bugs must be traceable. We will be happy to
  27  * consider code for inclusion in the official distribution, but
  28  * derived work must not be called official GROMACS. Details are found
  29  * in the README & COPYING files - if they are missing, get the
  30  * official version at http://www.gromacs.org.
  31  *
  32  * To help us fund GROMACS development, we humbly ask that you cite
  33  * the research papers on the package. Check out http://www.gromacs.org.
  34  */
  35 /*! \libinternal \file
  36  * \brief
  37  * Declares utility classes for testing file contents.
  38  *
  39  * \author Teemu Murtola <teemu.murtola@gmail.com>
  40  * \inlibraryapi
  41  * \ingroup module_testutils
  42  */
  43 #ifndef GMX_TESTUTILS_FILEMATCHERS_H
  44 #define GMX_TESTUTILS_FILEMATCHERS_H
  45
  46 #include <memory>
  47 #include <string>
  48
  49 namespace gmx
  50 {
  51 namespace test
  52 {
  53
  54 class ITextBlockMatcherSettings;
  55 class TestReferenceChecker;
  56
  57 /*! \libinternal \brief
  58  * Represents a file matcher, matching file contents against reference (or
  59  * other) data.
  60  *
  61  * Typical pattern of declaring such matchers is to
  62  *  - Create a factory that implements IFileMatcherSettings,
  63  *  - Make that factory provide any necessary parameters that the matcher needs,
  64  *    using a "named parameter" idiom (see XvgMatch for an example), and
  65  *  - Make the factory create and return an instance of an internal
  66  *    implementation class that implements IFileMatcher and provides
  67  *    the actual matching logic.
  68  *
  69  * Any method that then wants to accept a matcher can accept a
  70  * IFileMatcherSettings.
  71  *
  72  * \inlibraryapi
  73  * \ingroup module_testutils
  74  */
  75 class IFileMatcher
  76 {
  77 public:
  78     virtual ~IFileMatcher();
  79
  80     /*! \brief
  81      * Matches contents of a file.
  82      *
  83      * \param  path     Path to the file to match.
  84      * \param  checker  Checker to use for matching.
  85      *
  86      * The method can change the state of the provided checker (e.g., by
  87      * changing the default tolerance).
  88      * The caller is responsible of providing a checker where such state
  89      * changes do not matter.
  90      */
  91     virtual void checkFile(const std::string& path, TestReferenceChecker* checker) = 0;
  92 };
  93
  94 //! Smart pointer for managing a IFileMatcher.
  95 typedef std::unique_ptr<IFileMatcher> FileMatcherPointer;
  96
  97 /*! \libinternal \brief
  98  * Represents a factory for creating a file matcher.
  99  *
 100  * See derived classes for available matchers.  Each derived class represents
 101  * one type of matcher (see IFileMatcher), and provides any methods
 102  * necessary to pass parameters to such a matcher.  Methods that accept a
 103  * matcher can then take in this interface, and call createFileMatcher() to use
 104  * the matcher that the caller of the method specifies.
 105  *
 106  * \inlibraryapi
 107  * \ingroup module_testutils
 108  */
 109 class IFileMatcherSettings
 110 {
 111 public:
 112     //! Factory method that constructs the matcher after parameters are set.
 113     virtual FileMatcherPointer createFileMatcher() const = 0;
 114
 115 protected:
 116     virtual ~IFileMatcherSettings();
 117 };
 118
 119 /*! \libinternal \brief
 120  * Use a ITextBlockMatcher for matching the contents.
 121  *
 122  * \inlibraryapi
 123  * \ingroup module_testutils
 124  */
 125 class TextFileMatch : public IFileMatcherSettings
 126 {
 127 public:
 128     //! Creates a matcher to match contents with given text matcher.
 129     explicit TextFileMatch(const ITextBlockMatcherSettings& streamSettings) :
 130         streamSettings_(streamSettings)
 131     {
 132     }
 133
 134     FileMatcherPointer createFileMatcher() const override;
 135
 136 private:
 137     const ITextBlockMatcherSettings& streamSettings_;
 138 };
 139
 140 /*! \libinternal \brief
 141  * Do not check the contents of the file.
 142  *
 143  * \inlibraryapi
 144  * \ingroup module_testutils
 145  */
 146 class NoContentsMatch : public IFileMatcherSettings
 147 {
 148 public:
 149     FileMatcherPointer createFileMatcher() const override;
 150 };
 151
 152 } // namespace test
 153 } // namespace gmx
 154
 155 #endif