tests/vectors/vectors.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        tests/vectors/vectors.cpp
   3 // Purpose:     wxVector<T> unit test
   4 // Author:      Vaclav Slavik
   5 // Created:     2007-07-07
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2007 Vaclav Slavik
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 // ----------------------------------------------------------------------------
  11 // headers
  12 // ----------------------------------------------------------------------------
  13
  14 #include "testprec.h"
  15
  16 #ifdef __BORLANDC__
  17     #pragma hdrstop
  18 #endif
  19
  20 #ifndef WX_PRECOMP
  21     #include "wx/wx.h"
  22 #endif // WX_PRECOMP
  23
  24 #include "wx/vector.h"
  25
  26 // ----------------------------------------------------------------------------
  27 // simple class capable of detecting leaks of its objects
  28 // ----------------------------------------------------------------------------
  29
  30 class CountedObject
  31 {
  32 public:
  33     CountedObject(int n = 0) : m_n(n) { ms_count++; }
  34     CountedObject(const CountedObject& co) : m_n(co.m_n) { ms_count++; }
  35     ~CountedObject() { ms_count--; }
  36
  37     int GetValue() const { return m_n; }
  38
  39     static int GetCount() { return ms_count; }
  40
  41 private:
  42     static int ms_count;
  43
  44     int m_n;
  45 };
  46
  47 int CountedObject::ms_count = 0;
  48
  49 // ----------------------------------------------------------------------------
  50 // simple class capable of checking its "this" pointer validity
  51 // ----------------------------------------------------------------------------
  52
  53 class SelfPointingObject
  54 {
  55 public:
  56     SelfPointingObject() { m_self = this; }
  57     SelfPointingObject(const SelfPointingObject&) { m_self = this; }
  58     ~SelfPointingObject() { CPPUNIT_ASSERT( this == m_self ); }
  59
  60     // the assignment operator should not modify our "this" pointer so
  61     // implement it just to prevent the default version from doing it
  62     SelfPointingObject& operator=(const SelfPointingObject&) { return *this; }
  63
  64 private:
  65     SelfPointingObject *m_self;
  66 };
  67
  68 // ----------------------------------------------------------------------------
  69 // test class
  70 // ----------------------------------------------------------------------------
  71
  72 class VectorsTestCase : public CppUnit::TestCase
  73 {
  74 public:
  75     VectorsTestCase() {}
  76
  77 private:
  78     CPPUNIT_TEST_SUITE( VectorsTestCase );
  79         CPPUNIT_TEST( PushPopTest );
  80         CPPUNIT_TEST( Insert );
  81         CPPUNIT_TEST( Erase );
  82         CPPUNIT_TEST( Iterators );
  83         CPPUNIT_TEST( Objects );
  84         CPPUNIT_TEST( NonPODs );
  85     CPPUNIT_TEST_SUITE_END();
  86
  87     void PushPopTest();
  88     void Insert();
  89     void Erase();
  90     void Iterators();
  91     void Objects();
  92     void NonPODs();
  93
  94     DECLARE_NO_COPY_CLASS(VectorsTestCase)
  95 };
  96
  97 // register in the unnamed registry so that these tests are run by default
  98 CPPUNIT_TEST_SUITE_REGISTRATION( VectorsTestCase );
  99
 100 // also include in it's own registry so that these tests can be run alone
 101 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( VectorsTestCase, "VectorsTestCase" );
 102
 103 void VectorsTestCase::PushPopTest()
 104 {
 105     wxVector<int> v;
 106
 107     CPPUNIT_ASSERT( v.size() == 0 );
 108     v.push_back(1);
 109     CPPUNIT_ASSERT( v.size() == 1 );
 110     v.push_back(2);
 111     CPPUNIT_ASSERT( v.size() == 2 );
 112     v.push_back(42);
 113     CPPUNIT_ASSERT( v.size() == 3 );
 114
 115     CPPUNIT_ASSERT( v[0] == 1 );
 116     CPPUNIT_ASSERT( v[1] == 2 );
 117     CPPUNIT_ASSERT( v[2] == 42 );
 118
 119     v.pop_back();
 120     CPPUNIT_ASSERT( v.size() == 2 );
 121     CPPUNIT_ASSERT( v[0] == 1 );
 122     CPPUNIT_ASSERT( v[1] == 2 );
 123
 124     v.pop_back();
 125     CPPUNIT_ASSERT( v.size() == 1 );
 126     CPPUNIT_ASSERT( v[0] == 1 );
 127
 128     v.pop_back();
 129     CPPUNIT_ASSERT( v.size() == 0 );
 130     CPPUNIT_ASSERT( v.empty() );
 131
 132     wxVector<char> vEmpty;
 133 }
 134
 135 void VectorsTestCase::Insert()
 136 {
 137     wxVector<char> v;
 138
 139     v.insert(v.end(), 'a');
 140     CPPUNIT_ASSERT( v.size() == 1 );
 141     CPPUNIT_ASSERT( v[0] == 'a' );
 142
 143     v.insert(v.end(), 'b');
 144     CPPUNIT_ASSERT( v.size() == 2 );
 145     CPPUNIT_ASSERT( v[0] == 'a' );
 146     CPPUNIT_ASSERT( v[1] == 'b' );
 147
 148     v.insert(v.begin(), '0');
 149     CPPUNIT_ASSERT( v.size() == 3 );
 150     CPPUNIT_ASSERT( v[0] == '0' );
 151     CPPUNIT_ASSERT( v[1] == 'a' );
 152     CPPUNIT_ASSERT( v[2] == 'b' );
 153
 154     v.insert(v.begin() + 2, 'X');
 155     CPPUNIT_ASSERT( v.size() == 4 );
 156     CPPUNIT_ASSERT( v[0] == '0' );
 157     CPPUNIT_ASSERT( v[1] == 'a' );
 158     CPPUNIT_ASSERT( v[2] == 'X' );
 159     CPPUNIT_ASSERT( v[3] == 'b' );
 160 }
 161
 162 void VectorsTestCase::Erase()
 163 {
 164     wxVector<int> v;
 165
 166     v.push_back(1);
 167     v.push_back(2);
 168     v.push_back(3);
 169     v.push_back(4);
 170     CPPUNIT_ASSERT( v.size() == 4 );
 171
 172     v.erase(v.begin(), v.end()-1);
 173     CPPUNIT_ASSERT( v.size() == 1 );
 174     CPPUNIT_ASSERT( v[0] == 4 );
 175
 176     v.clear();
 177     v.push_back(1);
 178     v.push_back(2);
 179     v.push_back(3);
 180     v.push_back(4);
 181     CPPUNIT_ASSERT( v.size() == 4 );
 182
 183     v.erase(v.begin());
 184     CPPUNIT_ASSERT( v.size() == 3 );
 185     CPPUNIT_ASSERT( v[0] == 2 );
 186     CPPUNIT_ASSERT( v[1] == 3 );
 187     CPPUNIT_ASSERT( v[2] == 4 );
 188 }
 189
 190 void VectorsTestCase::Iterators()
 191 {
 192     wxVector<int> v;
 193     v.push_back(1);
 194     v.push_back(2);
 195     v.push_back(3);
 196     v.push_back(4);
 197
 198     int value = 1;
 199     for ( wxVector<int>::iterator i = v.begin(); i != v.end(); ++i, ++value )
 200     {
 201         CPPUNIT_ASSERT_EQUAL( value, *i );
 202     }
 203 }
 204
 205 void VectorsTestCase::Objects()
 206 {
 207     wxVector<CountedObject> v;
 208     v.push_back(CountedObject(1));
 209     v.push_back(CountedObject(2));
 210     v.push_back(CountedObject(3));
 211
 212     v.erase(v.begin());
 213     CPPUNIT_ASSERT_EQUAL( 2, v.size() );
 214     CPPUNIT_ASSERT_EQUAL( 2, CountedObject::GetCount() );
 215
 216     v.clear();
 217     CPPUNIT_ASSERT_EQUAL( 0, CountedObject::GetCount() );
 218 }
 219
 220 void VectorsTestCase::NonPODs()
 221 {
 222     wxVector<SelfPointingObject> v;
 223     v.push_back(SelfPointingObject());
 224     v.push_back(SelfPointingObject());
 225     v.push_back(SelfPointingObject());
 226
 227     v.erase(v.begin());
 228     v.clear();
 229
 230     // try the same with wxString, which is not POD, but is implemented in
 231     // a movable way (this won't assert, but would crash or show some memory
 232     // problems under Valgrind if wxString couldn't be safely moved with
 233     // memmove()):
 234     wxVector<wxString> vs;
 235     vs.push_back("one");
 236     vs.push_back("two");
 237     vs.push_back("three");
 238
 239     vs.erase(vs.begin());
 240     vs.clear();
 241 }