src/testutils/stdiohelper.h

   1 /*
   2  * This file is part of the GROMACS molecular simulation package.
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   4  * Copyright (c) 2013,2014,2017, by the GROMACS development team, led by
   5  * Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
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  35 /*! \libinternal \file
  36  * \brief
  37  * Declares gmx::test::StdioTestHelper.
  38  *
  39  * \author Mark Abraham <mark.j.abraham@gmail.com>
  40  * \inlibraryapi
  41  * \ingroup module_testutils
  42  */
  43 #ifndef GMX_TESTUTILS_STDIOHELPER_H
  44 #define GMX_TESTUTILS_STDIOHELPER_H
  45
  46 #include "gromacs/utility/classhelpers.h"
  47
  48 namespace gmx
  49 {
  50 namespace test
  51 {
  52
  53 class TestFileManager;
  54
  55 /*! \libinternal \brief
  56  * Helper class for tests where code reads directly from `stdin`.
  57  *
  58  * Any method in this class may throw std::bad_alloc if out of memory.
  59  *
  60  * \inlibraryapi
  61  * \ingroup module_testutils
  62  */
  63 class StdioTestHelper
  64 {
  65     public:
  66         //! Creates a helper using the given file manager.
  67         explicit StdioTestHelper(TestFileManager *fileManager)
  68             : fileManager_(*fileManager)
  69         {
  70         }
  71
  72         /*! \brief Accepts a string as input, writes it to a temporary
  73          * file and then reopens stdin to read the contents of that
  74          * string.
  75          *
  76          * \throws FileIOError  when the freopen() fails
  77          */
  78         void redirectStringToStdin(const char *theString);
  79
  80     private:
  81         TestFileManager &fileManager_;
  82
  83         GMX_DISALLOW_COPY_AND_ASSIGN(StdioTestHelper);
  84 };
  85
  86 } // namespace test
  87 } // namespace gmx
  88
  89 #endif