tests/graphics/ellipsization.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        tests/graphics/ellipsization.cpp
   3 // Purpose:     wxControlBase::*Ellipsize* unit test
   4 // Author:      Francesco Montorsi
   5 // Created:     2010-03-10
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2010 Francesco Montorsi
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 // ----------------------------------------------------------------------------
  11 // headers
  12 // ----------------------------------------------------------------------------
  13
  14 #include "testprec.h"
  15
  16 #ifdef __BORLANDC__
  17     #pragma hdrstop
  18 #endif
  19
  20 #include "wx/control.h"
  21 #include "wx/dcmemory.h"
  22
  23 // ----------------------------------------------------------------------------
  24 // test class
  25 // ----------------------------------------------------------------------------
  26
  27 class EllipsizationTestCase : public CppUnit::TestCase
  28 {
  29 public:
  30     EllipsizationTestCase() { }
  31
  32 private:
  33     CPPUNIT_TEST_SUITE( EllipsizationTestCase );
  34         CPPUNIT_TEST( Ellipsize );
  35     CPPUNIT_TEST_SUITE_END();
  36
  37     void Ellipsize();
  38
  39     DECLARE_NO_COPY_CLASS(EllipsizationTestCase)
  40 };
  41
  42 // register in the unnamed registry so that these tests are run by default
  43 CPPUNIT_TEST_SUITE_REGISTRATION( EllipsizationTestCase );
  44
  45 // also include in it's own registry so that these tests can be run alone
  46 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( EllipsizationTestCase, "EllipsizationTestCase" );
  47
  48 void EllipsizationTestCase::Ellipsize()
  49 {
  50     wxMemoryDC dc;
  51
  52     static const char *stringsToTest[] =
  53     {
  54         "N",
  55         ".",
  56         "x",
  57         "foobar",
  58         "\xCE\xB1", // U03B1 (GREEK SMALL LETTER ALPHA)
  59         "Another test",
  60         "a very very very very very very very long string",
  61         // alpha+beta+gamma+delta+epsilon+zeta+eta+theta+iota
  62         "\xCE\xB1\xCE\xB2\xCE\xB3\xCE\xB4\xCE\xB5\xCE\xB6\xCE\xB7\xCE\xB8\xCE\xB9",
  63         "\t", "\t\t\t\t\t", "a\tstring\twith\ttabs",
  64         "\n", "\n\n\n\n\n", "a\nstring\nwith\nnewlines",
  65         "&", "&&&&&&&", "a&string&with&newlines",
  66         "\t\n&", "a\t\n&string\t\n&with\t\n&many\t\n&chars"
  67     };
  68
  69     static const int flagsToTest[] =
  70     {
  71         0,
  72         wxELLIPSIZE_FLAGS_PROCESS_MNEMONICS,
  73         wxELLIPSIZE_FLAGS_EXPAND_TABS,
  74         wxELLIPSIZE_FLAGS_PROCESS_MNEMONICS | wxELLIPSIZE_FLAGS_EXPAND_TABS
  75     };
  76
  77     static const wxEllipsizeMode modesToTest[] =
  78     {
  79         wxELLIPSIZE_START,
  80         wxELLIPSIZE_MIDDLE,
  81         wxELLIPSIZE_END
  82     };
  83
  84     int widthsToTest[] = { 0, 1, 2, 3, 10, 20, 100 };
  85
  86     for ( unsigned int s = 0; s < WXSIZEOF(stringsToTest); s++ )
  87     {
  88         const wxString str = wxString::FromUTF8(stringsToTest[s]);
  89
  90         for ( unsigned int  f = 0; f < WXSIZEOF(flagsToTest); f++ )
  91         {
  92             for ( unsigned int m = 0; m < WXSIZEOF(modesToTest); m++ )
  93             {
  94                 for ( unsigned int w = 0; w < WXSIZEOF(widthsToTest); w++ )
  95                 {
  96                     wxString ret = wxControlBase::Ellipsize
  97                                    (
  98                                     str,
  99                                     dc,
 100                                     modesToTest[m],
 101                                     widthsToTest[w],
 102                                     flagsToTest[f]
 103                                    );
 104
 105                     WX_ASSERT_MESSAGE
 106                     (
 107                      ("invalid ellipsization for \"%s\"", str),
 108                      dc.GetMultiLineTextExtent(ret).GetWidth() <= widthsToTest[w]
 109                     );
 110                 }
 111             }
 112         }
 113     }
 114 }