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( Resize );
  86         CPPUNIT_TEST( Swap );
  87     CPPUNIT_TEST_SUITE_END();
  88
  89     void PushPopTest();
  90     void Insert();
  91     void Erase();
  92     void Iterators();
  93     void Objects();
  94     void NonPODs();
  95     void Resize();
  96     void Swap();
  97
  98     DECLARE_NO_COPY_CLASS(VectorsTestCase)
  99 };
 100
 101 // register in the unnamed registry so that these tests are run by default
 102 CPPUNIT_TEST_SUITE_REGISTRATION( VectorsTestCase );
 103
 104 // also include in it's own registry so that these tests can be run alone
 105 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( VectorsTestCase, "VectorsTestCase" );
 106
 107 void VectorsTestCase::PushPopTest()
 108 {
 109     wxVector<int> v;
 110
 111     CPPUNIT_ASSERT( v.size() == 0 );
 112     v.push_back(1);
 113     CPPUNIT_ASSERT( v.size() == 1 );
 114     v.push_back(2);
 115     CPPUNIT_ASSERT( v.size() == 2 );
 116     v.push_back(42);
 117     CPPUNIT_ASSERT( v.size() == 3 );
 118
 119     CPPUNIT_ASSERT( v[0] == 1 );
 120     CPPUNIT_ASSERT( v[1] == 2 );
 121     CPPUNIT_ASSERT( v[2] == 42 );
 122
 123     v.pop_back();
 124     CPPUNIT_ASSERT( v.size() == 2 );
 125     CPPUNIT_ASSERT( v[0] == 1 );
 126     CPPUNIT_ASSERT( v[1] == 2 );
 127
 128     v.pop_back();
 129     CPPUNIT_ASSERT( v.size() == 1 );
 130     CPPUNIT_ASSERT( v[0] == 1 );
 131
 132     v.pop_back();
 133     CPPUNIT_ASSERT( v.size() == 0 );
 134     CPPUNIT_ASSERT( v.empty() );
 135
 136     wxVector<char> vEmpty;
 137 }
 138
 139 void VectorsTestCase::Insert()
 140 {
 141     wxVector<char> v;
 142
 143     v.insert(v.end(), 'a');
 144     CPPUNIT_ASSERT( v.size() == 1 );
 145     CPPUNIT_ASSERT( v[0] == 'a' );
 146
 147     v.insert(v.end(), 'b');
 148     CPPUNIT_ASSERT( v.size() == 2 );
 149     CPPUNIT_ASSERT( v[0] == 'a' );
 150     CPPUNIT_ASSERT( v[1] == 'b' );
 151
 152     v.insert(v.begin(), '0');
 153     CPPUNIT_ASSERT( v.size() == 3 );
 154     CPPUNIT_ASSERT( v[0] == '0' );
 155     CPPUNIT_ASSERT( v[1] == 'a' );
 156     CPPUNIT_ASSERT( v[2] == 'b' );
 157
 158     v.insert(v.begin() + 2, 'X');
 159     CPPUNIT_ASSERT( v.size() == 4 );
 160     CPPUNIT_ASSERT( v[0] == '0' );
 161     CPPUNIT_ASSERT( v[1] == 'a' );
 162     CPPUNIT_ASSERT( v[2] == 'X' );
 163     CPPUNIT_ASSERT( v[3] == 'b' );
 164 }
 165
 166 void VectorsTestCase::Erase()
 167 {
 168     wxVector<int> v;
 169
 170     v.push_back(1);
 171     v.push_back(2);
 172     v.push_back(3);
 173     v.push_back(4);
 174     CPPUNIT_ASSERT( v.size() == 4 );
 175
 176     v.erase(v.begin(), v.end()-1);
 177     CPPUNIT_ASSERT( v.size() == 1 );
 178     CPPUNIT_ASSERT( v[0] == 4 );
 179
 180     v.clear();
 181     v.push_back(1);
 182     v.push_back(2);
 183     v.push_back(3);
 184     v.push_back(4);
 185     CPPUNIT_ASSERT( v.size() == 4 );
 186
 187     v.erase(v.begin());
 188     CPPUNIT_ASSERT( v.size() == 3 );
 189     CPPUNIT_ASSERT( v[0] == 2 );
 190     CPPUNIT_ASSERT( v[1] == 3 );
 191     CPPUNIT_ASSERT( v[2] == 4 );
 192 }
 193
 194 void VectorsTestCase::Iterators()
 195 {
 196     wxVector<int> v;
 197     v.push_back(1);
 198     v.push_back(2);
 199     v.push_back(3);
 200     v.push_back(4);
 201
 202     int value = 1;
 203     for ( wxVector<int>::iterator i = v.begin(); i != v.end(); ++i, ++value )
 204     {
 205         CPPUNIT_ASSERT_EQUAL( value, *i );
 206     }
 207 }
 208
 209 void VectorsTestCase::Objects()
 210 {
 211     wxVector<CountedObject> v;
 212     v.push_back(CountedObject(1));
 213     v.push_back(CountedObject(2));
 214     v.push_back(CountedObject(3));
 215
 216     v.erase(v.begin());
 217     CPPUNIT_ASSERT_EQUAL( 2, v.size() );
 218     CPPUNIT_ASSERT_EQUAL( 2, CountedObject::GetCount() );
 219
 220     v.clear();
 221     CPPUNIT_ASSERT_EQUAL( 0, CountedObject::GetCount() );
 222 }
 223
 224 void VectorsTestCase::NonPODs()
 225 {
 226     wxVector<SelfPointingObject> v;
 227     v.push_back(SelfPointingObject());
 228     v.push_back(SelfPointingObject());
 229     v.push_back(SelfPointingObject());
 230
 231     v.erase(v.begin());
 232     v.clear();
 233
 234     // try the same with wxString, which is not POD, but is implemented in
 235     // a movable way (this won't assert, but would crash or show some memory
 236     // problems under Valgrind if wxString couldn't be safely moved with
 237     // memmove()):
 238     wxVector<wxString> vs;
 239     vs.push_back("one");
 240     vs.push_back("two");
 241     vs.push_back("three");
 242
 243     vs.erase(vs.begin());
 244     vs.clear();
 245 }
 246
 247 void VectorsTestCase::Resize()
 248 {
 249     wxVector<CountedObject> v;
 250     v.resize(3);
 251
 252     CPPUNIT_ASSERT_EQUAL( 3, v.size() );
 253     CPPUNIT_ASSERT_EQUAL( 3, CountedObject::GetCount() );
 254     CPPUNIT_ASSERT_EQUAL( 0, v[0].GetValue() );
 255     CPPUNIT_ASSERT_EQUAL( 0, v[1].GetValue() );
 256     CPPUNIT_ASSERT_EQUAL( 0, v[2].GetValue() );
 257
 258     v.resize(1);
 259     CPPUNIT_ASSERT_EQUAL( 1, v.size() );
 260     CPPUNIT_ASSERT_EQUAL( 1, CountedObject::GetCount() );
 261
 262     v.resize(4, CountedObject(17));
 263     CPPUNIT_ASSERT_EQUAL( 4, v.size() );
 264     CPPUNIT_ASSERT_EQUAL( 4, CountedObject::GetCount() );
 265     CPPUNIT_ASSERT_EQUAL( 0, v[0].GetValue() );
 266     CPPUNIT_ASSERT_EQUAL( 17, v[1].GetValue() );
 267     CPPUNIT_ASSERT_EQUAL( 17, v[2].GetValue() );
 268     CPPUNIT_ASSERT_EQUAL( 17, v[3].GetValue() );
 269 }
 270
 271 void VectorsTestCase::Swap()
 272 {
 273     wxVector<int> v1, v2;
 274     v1.push_back(17);
 275     v1.swap(v2);
 276     CPPUNIT_ASSERT( v1.empty() );
 277     CPPUNIT_ASSERT_EQUAL( 1, v2.size() );
 278     CPPUNIT_ASSERT_EQUAL( 17, v2[0] );
 279
 280     v1.push_back(9);
 281     v2.swap(v1);
 282     CPPUNIT_ASSERT_EQUAL( 1, v1.size() );
 283     CPPUNIT_ASSERT_EQUAL( 17, v1[0] );
 284     CPPUNIT_ASSERT_EQUAL( 1, v2.size() );
 285     CPPUNIT_ASSERT_EQUAL( 9, v2[0] );
 286
 287     v2.clear();
 288     v1.swap(v2);
 289     CPPUNIT_ASSERT( v1.empty() );
 290 }
 291