sal/qa/rtl/random/rtl_random.cxx

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  27
  28
  29 // MARKER(update_precomp.py): autogen include statement, do not remove
  30 #include "precompiled_sal.hxx"
  31 // autogenerated file with codegen.pl
  32
  33 #include <algorithm> // STL
  34
  35 #include <testshl/simpleheader.hxx>
  36 #include <rtl/random.h>
  37
  38 namespace rtl_random
  39 {
  40
  41 class createPool : public CppUnit::TestFixture
  42 {
  43 public:
  44     // initialise your test code values here.
  45     void setUp()
  46     {
  47     }
  48
  49     void tearDown()
  50     {
  51     }
  52
  53     // insert your test code here.
  54     // this is only demonstration code
  55     void createPool_001()
  56     {
  57         // this is demonstration code
  58
  59         rtlRandomPool aPool = rtl_random_createPool();
  60
  61         // LLA: seems to be that an other test is not possible for createPool()
  62         CPPUNIT_ASSERT_MESSAGE("create failed", aPool != NULL);
  63
  64         rtl_random_destroyPool(aPool);
  65     }
  66
  67     // Change the following lines only, if you add, remove or rename
  68     // member functions of the current class,
  69     // because these macros are need by auto register mechanism.
  70
  71     CPPUNIT_TEST_SUITE(createPool);
  72     CPPUNIT_TEST(createPool_001);
  73     CPPUNIT_TEST_SUITE_END();
  74 }; // class createPool
  75
  76
  77 class destroyPool : public CppUnit::TestFixture
  78 {
  79 public:
  80     // initialise your test code values here.
  81     void setUp()
  82     {
  83     }
  84
  85     void tearDown()
  86     {
  87     }
  88
  89     // insert your test code here.
  90     void destroyPool_000()
  91     {
  92         // GPF, if failed
  93         rtl_random_destroyPool(NULL);
  94     }
  95
  96     void destroyPool_001()
  97     {
  98         rtlRandomPool aPool = rtl_random_createPool();
  99
 100         // LLA: seems to be that an other test is not possible for createPool()
 101         CPPUNIT_ASSERT_MESSAGE("create failed", aPool != NULL);
 102
 103         rtl_random_destroyPool(aPool);
 104     }
 105     // Change the following lines only, if you add, remove or rename
 106     // member functions of the current class,
 107     // because these macros are need by auto register mechanism.
 108
 109     CPPUNIT_TEST_SUITE(destroyPool);
 110     CPPUNIT_TEST(destroyPool_000);
 111     CPPUNIT_TEST(destroyPool_001);
 112     CPPUNIT_TEST_SUITE_END();
 113 }; // class destroyPool
 114
 115
 116 class addBytes : public CppUnit::TestFixture
 117 {
 118 public:
 119     // initialise your test code values here.
 120     void setUp()
 121     {
 122     }
 123
 124     void tearDown()
 125     {
 126     }
 127
 128     // insert your test code here.
 129     // this is only demonstration code
 130     void addBytes_000()
 131     {
 132         rtlRandomPool aPool = rtl_random_createPool();
 133
 134         sal_uInt32  nBufLen = 4;
 135         sal_uInt8   *pBuffer = new sal_uInt8[ nBufLen ];
 136         memset(pBuffer, 0, nBufLen);
 137
 138         rtlRandomError aError = rtl_random_addBytes(NULL, NULL, 0);
 139         CPPUNIT_ASSERT_MESSAGE("wrong parameter", aError == rtl_Random_E_Argument);
 140
 141         /* rtlRandomError */ aError = rtl_random_addBytes(aPool, NULL, 0);
 142         CPPUNIT_ASSERT_MESSAGE("wrong parameter", aError == rtl_Random_E_Argument);
 143
 144         /* rtlRandomError */ aError = rtl_random_addBytes(aPool, pBuffer, nBufLen);
 145         CPPUNIT_ASSERT_MESSAGE("wrong parameter", aError == rtl_Random_E_None);
 146
 147         rtl_random_destroyPool(aPool);
 148         delete [] pBuffer;
 149
 150     }
 151
 152     void addBytes_001()
 153         {
 154             rtlRandomPool aPool = rtl_random_createPool();
 155
 156             sal_uInt32  nBufLen = 4;
 157             sal_uInt8   *pBuffer = new sal_uInt8[ nBufLen ];
 158
 159             memset(pBuffer, 0, nBufLen);
 160
 161             rtl_random_addBytes(aPool, pBuffer, nBufLen);
 162
 163             t_print("%2x %2x %2x %2x\n", pBuffer[0], pBuffer[1], pBuffer[2], pBuffer[3]);
 164
 165             rtl_random_destroyPool(aPool);
 166             delete [] pBuffer;
 167         }
 168
 169
 170     // Change the following lines only, if you add, remove or rename
 171     // member functions of the current class,
 172     // because these macros are need by auto register mechanism.
 173
 174     CPPUNIT_TEST_SUITE(addBytes);
 175     CPPUNIT_TEST(addBytes_000);
 176     CPPUNIT_TEST(addBytes_001);
 177     CPPUNIT_TEST_SUITE_END();
 178 }; // class addBytes
 179
 180
 181 class Statistics
 182 {
 183     int m_nDispensation[256];
 184
 185     int m_nMin;
 186     int m_nMax;
 187     int m_nAverage;
 188     int m_nMinDeviation;
 189     int m_nMaxDeviation;
 190
 191 public:
 192     void clearDispensation()
 193         {
 194             for (int i = 0;i < 256;i ++)                        // clear array
 195             {
 196                 m_nDispensation[i] = 0;
 197             }
 198         }
 199     Statistics()
 200         {
 201             clearDispensation();
 202         }
 203     ~Statistics(){}
 204
 205     void addValue(sal_Int16 _nIndex, sal_Int32 _nValue)
 206         {
 207             OSL_ASSERT(_nIndex >= 0 && _nIndex < 256);
 208             m_nDispensation[_nIndex] += _nValue;
 209         }
 210
 211     void build(sal_Int32 _nCountMax)
 212         {
 213             m_nMin = _nCountMax;
 214             m_nMax = 0;
 215
 216             m_nAverage = _nCountMax / 256;
 217
 218             m_nMinDeviation = _nCountMax;
 219             m_nMaxDeviation = 0;
 220
 221             for (int i = 0;i < 256;i ++)                        // show dispensation
 222             {
 223                 m_nMin = std::min(m_nMin, m_nDispensation[i]);
 224                 m_nMax = std::max(m_nMax, m_nDispensation[i]);
 225
 226                 m_nMinDeviation = std::min(m_nMinDeviation, abs(m_nAverage - m_nDispensation[i]));
 227                 m_nMaxDeviation = std::max(m_nMaxDeviation, abs(m_nAverage - m_nDispensation[i]));
 228             }
 229         }
 230
 231     void print()
 232         {
 233             // LLA: these are only info values
 234             t_print("\nSome statistics\n");
 235             t_print("Min: %d\n", m_nMin);
 236             t_print("Max: %d\n", m_nMax);
 237             t_print("Average: %d\n", m_nAverage);
 238             t_print("Min abs deviation: %d\n", m_nMinDeviation);
 239             t_print("Max abs deviation: %d\n", m_nMaxDeviation);
 240         }
 241
 242     sal_Int32 getAverage() {return m_nAverage;}
 243     sal_Int32 getMaxDeviation() {return m_nMaxDeviation;}
 244
 245 };
 246
 247 class getBytes : public CppUnit::TestFixture
 248 {
 249 public:
 250     // initialise your test code values here.
 251     void setUp()
 252     {
 253     }
 254
 255     void tearDown()
 256     {
 257     }
 258
 259     // insert your test code here.
 260     void getBytes_000()
 261     {
 262         rtlRandomPool aPool = rtl_random_createPool();
 263
 264         sal_uInt32  nBufLen = 4;
 265         sal_uInt8   *pBuffer = new sal_uInt8[ nBufLen ];
 266         memset(pBuffer, 0, nBufLen);
 267
 268         rtlRandomError aError = rtl_random_getBytes(NULL, NULL, 0);
 269         CPPUNIT_ASSERT_MESSAGE("wrong parameter", aError == rtl_Random_E_Argument);
 270
 271         /* rtlRandomError */ aError = rtl_random_getBytes(aPool, NULL, 0);
 272         CPPUNIT_ASSERT_MESSAGE("wrong parameter", aError == rtl_Random_E_Argument);
 273
 274         /* rtlRandomError */ aError = rtl_random_getBytes(aPool, pBuffer, nBufLen);
 275         CPPUNIT_ASSERT_MESSAGE("wrong parameter", aError == rtl_Random_E_None);
 276
 277         rtl_random_destroyPool(aPool);
 278         delete [] pBuffer;
 279     }
 280
 281     void getBytes_001()
 282     {
 283         rtlRandomPool aPool = rtl_random_createPool();
 284
 285         sal_uInt32  nBufLen = 4;
 286         sal_uInt8   *pBuffer = new sal_uInt8[ nBufLen ];
 287         memset(pBuffer, 0, nBufLen);
 288
 289         rtlRandomError aError = rtl_random_getBytes(aPool, pBuffer, nBufLen);
 290         CPPUNIT_ASSERT_MESSAGE("wrong parameter", aError == rtl_Random_E_None);
 291
 292         t_print("%2x %2x %2x %2x\n", pBuffer[0], pBuffer[1], pBuffer[2], pBuffer[3]);
 293
 294         rtl_random_destroyPool(aPool);
 295         delete [] pBuffer;
 296     }
 297
 298     void getBytes_002()
 299     {
 300         rtlRandomPool aPool = rtl_random_createPool();
 301
 302         sal_uInt32  nBufLen = 4;
 303         sal_uInt8   *pBuffer = new sal_uInt8[ nBufLen << 1 ];
 304         memset(pBuffer, 0, nBufLen << 1);
 305
 306         CPPUNIT_ASSERT_MESSAGE("memset failed", pBuffer[4] == 0 && pBuffer[5] == 0 && pBuffer[6] == 0 && pBuffer[7] == 0);
 307
 308         rtlRandomError aError = rtl_random_getBytes(aPool, pBuffer, nBufLen);
 309         CPPUNIT_ASSERT_MESSAGE("wrong parameter", aError == rtl_Random_E_None);
 310
 311         t_print("%2x %2x %2x %2x %2x %2x %2x %2x\n", pBuffer[0], pBuffer[1], pBuffer[2], pBuffer[3], pBuffer[4], pBuffer[5], pBuffer[6], pBuffer[7]);
 312
 313         CPPUNIT_ASSERT_MESSAGE("internal memory overwrite", pBuffer[4] == 0 && pBuffer[5] == 0 && pBuffer[6] == 0 && pBuffer[7] == 0);
 314
 315         rtl_random_destroyPool(aPool);
 316         delete [] pBuffer;
 317     }
 318
 319     void getBytes_003()
 320     {
 321         rtlRandomPool aPool = rtl_random_createPool();
 322
 323         sal_uInt32  nBufLen = 1;
 324         sal_uInt8   *pBuffer = new sal_uInt8[ nBufLen ];
 325         memset(pBuffer, 0, nBufLen);
 326
 327         Statistics aStat;
 328
 329         CPPUNIT_ASSERT_MESSAGE("memset failed", pBuffer[0] == 0);
 330
 331         int nCount = 0;
 332
 333         int nCountMax = 1000000;
 334         for(nCount = 0;nCount < nCountMax; nCount ++)                  // run 100000000 through getBytes(...)
 335         {
 336             /* rtlRandomError aError = */ rtl_random_getBytes(aPool, pBuffer, nBufLen);
 337             /* CPPUNIT_ASSERT_MESSAGE("wrong parameter", aError == rtl_Random_E_None); */
 338
 339             aStat.addValue(pBuffer[0], 1);
 340         }
 341
 342         aStat.build(nCountMax);
 343         aStat.print();
 344
 345         CPPUNIT_ASSERT_MESSAGE("deviation should be less average", aStat.getMaxDeviation() < aStat.getAverage());
 346
 347         rtl_random_destroyPool(aPool);
 348         delete [] pBuffer;
 349     }
 350
 351     void getBytes_003_1()
 352     {
 353         rtlRandomPool aPool = rtl_random_createPool();
 354
 355         sal_uInt32  nBufLen = 256;
 356         sal_uInt8   *pBuffer = new sal_uInt8[ nBufLen ];
 357         memset(pBuffer, 0, nBufLen);
 358
 359         Statistics aStat;
 360
 361         CPPUNIT_ASSERT_MESSAGE("memset failed", pBuffer[0] == 0);
 362
 363         int nCount = 0;
 364
 365         int nCountMax = 10000;
 366         for(nCount = 0;nCount < nCountMax; nCount ++)                  // run 100000000 through getBytes(...)
 367         {
 368             /* rtlRandomError aError = */ rtl_random_getBytes(aPool, pBuffer, nBufLen);
 369             // CPPUNIT_ASSERT_MESSAGE("wrong parameter", aError == rtl_Random_E_None);
 370
 371             for (sal_uInt32 i=0;i<nBufLen;i++)
 372             {
 373                 aStat.addValue(pBuffer[i], 1);
 374             }
 375         }
 376
 377         aStat.build(nCountMax * nBufLen);
 378         aStat.print();
 379
 380         CPPUNIT_ASSERT_MESSAGE("deviation should be less average", aStat.getMaxDeviation() < aStat.getAverage());
 381
 382         rtl_random_destroyPool(aPool);
 383         delete [] pBuffer;
 384     }
 385
 386     // Change the following lines only, if you add, remove or rename
 387     // member functions of the current class,
 388     // because these macros are need by auto register mechanism.
 389
 390     CPPUNIT_TEST_SUITE(getBytes);
 391     CPPUNIT_TEST(getBytes_000);
 392     CPPUNIT_TEST(getBytes_001);
 393     CPPUNIT_TEST(getBytes_002);
 394     CPPUNIT_TEST(getBytes_003);
 395     CPPUNIT_TEST(getBytes_003_1);
 396     CPPUNIT_TEST_SUITE_END();
 397 }; // class getBytes
 398
 399 // -----------------------------------------------------------------------------
 400 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION(rtl_random::createPool, "rtl_random");
 401 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION(rtl_random::destroyPool, "rtl_random");
 402 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION(rtl_random::addBytes, "rtl_random");
 403 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION(rtl_random::getBytes, "rtl_random");
 404 } // namespace rtl_random
 405
 406
 407 // -----------------------------------------------------------------------------
 408
 409 // this macro creates an empty function, which will called by the RegisterAllFunctions()
 410 // to let the user the possibility to also register some functions by hand.
 411 NOADDITIONAL;
 412