src/testutils/interactivetest.h

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  35 /*! \libinternal \file
  36  * \brief
  37  * Provides helper classes for testing interactive prompts.
  38  *
  39  * \author Teemu Murtola <teemu.murtola@gmail.com>
  40  * \inlibraryapi
  41  * \ingroup module_testutils
  42  */
  43 #ifndef GMX_TESTUTILS_INTERACTIVETEST_H
  44 #define GMX_TESTUTILS_INTERACTIVETEST_H
  45
  46 #include "gromacs/utility/arrayref.h"
  47 #include "gromacs/utility/classhelpers.h"
  48
  49 namespace gmx
  50 {
  51
  52 class TextInputStream;
  53 class TextOutputStream;
  54
  55 namespace test
  56 {
  57
  58 class TestReferenceChecker;
  59
  60 /*! \libinternal \brief
  61  * Helper class for testing interactive sessions.
  62  *
  63  * The calling test can set the user input using setInputLines() (and possibly
  64  * setLastNewline()), pass the streams from inputStream() and outputStream() to
  65  * the code that executes the interactive session, and then call checkSession()
  66  * after the session is finished.
  67  * The input is provided from the array set with setInputLines(), and all
  68  * output is checked using the reference data framework.
  69  * The reference XML data can be viewed with the XSLT stylesheet to show
  70  * exactly how the session went.
  71  *
  72  * \inlibraryapi
  73  * \ingroup module_testutils
  74  */
  75 class InteractiveTestHelper
  76 {
  77     public:
  78         /*! \brief
  79          * Initializes the helper.
  80          *
  81          * \param[in] checker  Parent reference checker to use.
  82          *
  83          * The helper creates a compound item under \p checker for the
  84          * interactive session it tests.
  85          */
  86         explicit InteractiveTestHelper(gmx::test::TestReferenceChecker checker);
  87         ~InteractiveTestHelper();
  88
  89         //! Sets whether the last input line contains a newline (by default, it does).
  90         void setLastNewline(bool bInclude);
  91         /*! \brief
  92          * Sets the input lines for the interactive session.
  93          *
  94          * Calls to TextInputStream::readLine() will return strings from this
  95          * array in sequence.
  96          * Newlines are added at the end automatically (except for the last
  97          * line if `setLastNewLine(false)` has been called).
  98          * If there are more `readLine()` calls than there are input lines,
  99          * the remaining calls return end-of-input.
 100          */
 101         void setInputLines(const ArrayRef<const char *const> &inputLines);
 102
 103         //! Returns the input stream for the session.
 104         TextInputStream  &inputStream();
 105         //! Returns the output stream for the session.
 106         TextOutputStream &outputStream();
 107
 108         /*! \brief
 109          * Finalizes the checking for the session.
 110          *
 111          * This must be called after all input and output from a session has
 112          * occurred, as the helper will not otherwise know when output after
 113          * the last input has finished.  This method also checks that the
 114          * required number of input lines were read in the session.
 115          */
 116         void checkSession();
 117
 118     private:
 119         class Impl;
 120
 121         PrivateImplPointer<Impl> impl_;
 122 };
 123 } // namespace test
 124 } // namespace gmx
 125
 126 #endif