1 files changed, 357 insertions, 0 deletions
diff --git a/sal/qa/rtl/random/rtl_random.cxx b/sal/qa/rtl/random/rtl_random.cxx
new file mode 100644
index 000000000..c43638277
--- /dev/null
+++ b/sal/qa/rtl/random/rtl_random.cxx
@@ -0,0 +1,357 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <memory>
+#include <algorithm>
+
+#include <sal/types.h>
+#include <cppunit/TestAssert.h>
+#include <cppunit/TestFixture.h>
+#include <cppunit/extensions/HelperMacros.h>
+#include <cppunit/plugin/TestPlugIn.h>
+
+#include <rtl/random.h>
+
+#include <string.h>
+
+namespace rtl_random
+{
+
+class createPool : public CppUnit::TestFixture
+{
+public:
+    // insert your test code here.
+    // this is only demonstration code
+    void createPool_001()
+    {
+        // this is demonstration code
+
+        rtlRandomPool aPool = rtl_random_createPool();
+
+        // LLA: seems to be that another test is not possible for createPool()
+        CPPUNIT_ASSERT_MESSAGE("create failed", aPool != nullptr);
+
+        rtl_random_destroyPool(aPool);
+    }
+
+    // Change the following lines only, if you add, remove or rename
+    // member functions of the current class,
+    // because these macros are need by auto register mechanism.
+
+    CPPUNIT_TEST_SUITE(createPool);
+    CPPUNIT_TEST(createPool_001);
+    CPPUNIT_TEST_SUITE_END();
+}; // class createPool
+
+class destroyPool : public CppUnit::TestFixture
+{
+public:
+    // insert your test code here.
+    void destroyPool_000()
+    {
+        // GPF, if failed
+        rtl_random_destroyPool(nullptr);
+    }
+
+    void destroyPool_001()
+    {
+        rtlRandomPool aPool = rtl_random_createPool();
+
+        // LLA: seems to be that another test is not possible for createPool()
+        CPPUNIT_ASSERT_MESSAGE("create failed", aPool != nullptr);
+
+        rtl_random_destroyPool(aPool);
+    }
+    // Change the following lines only, if you add, remove or rename
+    // member functions of the current class,
+    // because these macros are need by auto register mechanism.
+
+    CPPUNIT_TEST_SUITE(destroyPool);
+    CPPUNIT_TEST(destroyPool_000);
+    CPPUNIT_TEST(destroyPool_001);
+    CPPUNIT_TEST_SUITE_END();
+}; // class destroyPool
+
+class addBytes : public CppUnit::TestFixture
+{
+public:
+    // insert your test code here.
+    // this is only demonstration code
+    void addBytes_000()
+    {
+        rtlRandomPool aPool = rtl_random_createPool();
+
+        sal_uInt32  nBufLen = 4;
+        std::unique_ptr<sal_uInt8[]>  pBuffer( new sal_uInt8[ nBufLen ] );
+        memset(pBuffer.get(), 0, nBufLen);
+
+        rtlRandomError aError = rtl_random_addBytes(nullptr, nullptr, 0);
+        CPPUNIT_ASSERT_EQUAL_MESSAGE("wrong parameter", rtl_Random_E_Argument, aError);
+
+        /* rtlRandomError */ aError = rtl_random_addBytes(aPool, nullptr, 0);
+        CPPUNIT_ASSERT_EQUAL_MESSAGE("wrong parameter", rtl_Random_E_Argument, aError);
+
+        /* rtlRandomError */ aError = rtl_random_addBytes(aPool, pBuffer.get(), nBufLen);
+        CPPUNIT_ASSERT_EQUAL_MESSAGE("wrong parameter", rtl_Random_E_None, aError);
+
+        rtl_random_destroyPool(aPool);
+    }
+
+    void addBytes_001()
+        {
+            rtlRandomPool aPool = rtl_random_createPool();
+
+            sal_uInt32  nBufLen = 4;
+            std::unique_ptr<sal_uInt8[]> pBuffer( new sal_uInt8[ nBufLen ] );
+
+            memset(pBuffer.get(), 0, nBufLen);
+
+            rtl_random_addBytes(aPool, pBuffer.get(), nBufLen);
+
+            printf("%2x %2x %2x %2x\n", pBuffer[0], pBuffer[1], pBuffer[2], pBuffer[3]);
+
+            rtl_random_destroyPool(aPool);
+        }
+
+    // Change the following lines only, if you add, remove or rename
+    // member functions of the current class,
+    // because these macros are need by auto register mechanism.
+
+    CPPUNIT_TEST_SUITE(addBytes);
+    CPPUNIT_TEST(addBytes_000);
+    CPPUNIT_TEST(addBytes_001);
+    CPPUNIT_TEST_SUITE_END();
+}; // class addBytes
+
+namespace {
+
+class Statistics
+{
+    int m_nDispensation[256];
+
+    int m_nMin;
+    int m_nMax;
+    int m_nAverage;
+    int m_nMinDeviation;
+    int m_nMaxDeviation;
+
+public:
+    void clearDispensation()
+    {
+        for (int i = 0;i < 256;++i)                        // clear array
+        {
+            m_nDispensation[i] = 0;
+        }
+    }
+    Statistics()
+    : m_nMin(0)
+    , m_nMax(0)
+    , m_nAverage(0)
+    , m_nMinDeviation(0)
+    , m_nMaxDeviation(0)
+    {
+        clearDispensation();
+    }
+
+    void addValue(sal_uInt8 _nIndex, sal_Int32 _nValue)
+    {
+        m_nDispensation[_nIndex] += _nValue;
+    }
+
+    void build(sal_Int32 _nCountMax)
+    {
+        m_nMin = _nCountMax;
+        m_nMax = 0;
+
+        m_nAverage = _nCountMax / 256;
+
+        m_nMinDeviation = _nCountMax;
+        m_nMaxDeviation = 0;
+
+        for (int i = 0;i < 256;++i)                        // show dispensation
+        {
+            m_nMin = std::min(m_nMin, m_nDispensation[i]);
+            m_nMax = std::max(m_nMax, m_nDispensation[i]);
+
+            m_nMinDeviation = std::min(m_nMinDeviation, abs(m_nAverage - m_nDispensation[i]));
+            m_nMaxDeviation = std::max(m_nMaxDeviation, abs(m_nAverage - m_nDispensation[i]));
+        }
+    }
+
+    void print()
+    {
+        // LLA: these are only info values
+        printf("\nSome statistics\n");
+        printf("Min: %d\n", m_nMin);
+        printf("Max: %d\n", m_nMax);
+        printf("Average: %d\n", m_nAverage);
+        printf("Min abs deviation: %d\n", m_nMinDeviation);
+        printf("Max abs deviation: %d\n", m_nMaxDeviation);
+    }
+
+    sal_Int32 getAverage() const {return m_nAverage;}
+    sal_Int32 getMaxDeviation() const {return m_nMaxDeviation;}
+
+};
+
+}
+
+class getBytes : public CppUnit::TestFixture
+{
+public:
+    // insert your test code here.
+    void getBytes_000()
+    {
+        rtlRandomPool aPool = rtl_random_createPool();
+
+        sal_uInt32  nBufLen = 4;
+        std::unique_ptr<sal_uInt8[]> pBuffer( new sal_uInt8[ nBufLen ] );
+        memset(pBuffer.get(), 0, nBufLen);
+
+        rtlRandomError aError = rtl_random_getBytes(nullptr, nullptr, 0);
+        CPPUNIT_ASSERT_EQUAL_MESSAGE("wrong parameter", rtl_Random_E_Argument, aError);
+
+        /* rtlRandomError */ aError = rtl_random_getBytes(aPool, nullptr, 0);
+        CPPUNIT_ASSERT_EQUAL_MESSAGE("wrong parameter", rtl_Random_E_Argument, aError);
+
+        /* rtlRandomError */ aError = rtl_random_getBytes(aPool, pBuffer.get(), nBufLen);
+        CPPUNIT_ASSERT_EQUAL_MESSAGE("wrong parameter", rtl_Random_E_None, aError);
+
+        rtl_random_destroyPool(aPool);
+    }
+
+    void getBytes_001()
+    {
+        rtlRandomPool aPool = rtl_random_createPool();
+
+        sal_uInt32  nBufLen = 4;
+        std::unique_ptr<sal_uInt8[]> pBuffer( new sal_uInt8[ nBufLen ] );
+        memset(pBuffer.get(), 0, nBufLen);
+
+        rtlRandomError aError = rtl_random_getBytes(aPool, pBuffer.get(), nBufLen);
+        CPPUNIT_ASSERT_EQUAL_MESSAGE("wrong parameter", rtl_Random_E_None, aError);
+
+        printf("%2x %2x %2x %2x\n", pBuffer[0], pBuffer[1], pBuffer[2], pBuffer[3]);
+
+        rtl_random_destroyPool(aPool);
+    }
+
+    void getBytes_002()
+    {
+        rtlRandomPool aPool = rtl_random_createPool();
+
+        sal_uInt32  nBufLen = 4;
+        std::unique_ptr<sal_uInt8[]>  pBuffer( new sal_uInt8[ nBufLen << 1 ] );
+        memset(pBuffer.get(), 0, nBufLen << 1);
+
+        CPPUNIT_ASSERT_MESSAGE("memset failed", pBuffer[4] == 0 && pBuffer[5] == 0 && pBuffer[6] == 0 && pBuffer[7] == 0);
+
+        rtlRandomError aError = rtl_random_getBytes(aPool, pBuffer.get(), nBufLen);
+        CPPUNIT_ASSERT_EQUAL_MESSAGE("wrong parameter", rtl_Random_E_None, aError);
+
+        printf("%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]);
+
+        CPPUNIT_ASSERT_MESSAGE("internal memory overwrite", pBuffer[4] == 0 && pBuffer[5] == 0 && pBuffer[6] == 0 && pBuffer[7] == 0);
+
+        rtl_random_destroyPool(aPool);
+    }
+
+    void getBytes_003()
+    {
+        rtlRandomPool aPool = rtl_random_createPool();
+
+        sal_uInt32  nBufLen = 1;
+        std::unique_ptr<sal_uInt8[]> pBuffer( new sal_uInt8[ nBufLen ] );
+        memset(pBuffer.get(), 0, nBufLen);
+
+        Statistics aStat;
+
+        CPPUNIT_ASSERT_EQUAL_MESSAGE("memset failed", static_cast<sal_uInt8>(0), pBuffer[0]);
+
+        int nCount = 0;
+
+        int nCountMax = 1000000;
+        for(nCount = 0;nCount < nCountMax; ++nCount)                  // run 100000000 through getBytes(...)
+        {
+            /* rtlRandomError aError = */ rtl_random_getBytes(aPool, pBuffer.get(), nBufLen);
+            /* CPPUNIT_ASSERT_MESSAGE("wrong parameter", aError == rtl_Random_E_None); */
+
+            aStat.addValue(pBuffer[0], 1);
+        }
+
+        aStat.build(nCountMax);
+        aStat.print();
+
+        CPPUNIT_ASSERT_MESSAGE("deviation should be less average", aStat.getMaxDeviation() < aStat.getAverage());
+
+        rtl_random_destroyPool(aPool);
+    }
+
+    void getBytes_003_1()
+    {
+        rtlRandomPool aPool = rtl_random_createPool();
+
+        sal_uInt32  nBufLen = 256;
+        std::unique_ptr<sal_uInt8[]> pBuffer( new sal_uInt8[ nBufLen ] );
+        memset(pBuffer.get(), 0, nBufLen);
+
+        Statistics aStat;
+
+        CPPUNIT_ASSERT_EQUAL_MESSAGE("memset failed", static_cast<sal_uInt8>(0), pBuffer[0]);
+
+        int nCount = 0;
+
+        int nCountMax = 10000;
+        for(nCount = 0;nCount < nCountMax; ++nCount)                  // run 100000000 through getBytes(...)
+        {
+            /* rtlRandomError aError = */ rtl_random_getBytes(aPool, pBuffer.get(), nBufLen);
+            // CPPUNIT_ASSERT_MESSAGE("wrong parameter", aError == rtl_Random_E_None);
+
+            for (sal_uInt32 i=0;i<nBufLen;++i)
+                aStat.addValue(pBuffer[i], 1);
+        }
+
+        aStat.build(nCountMax * nBufLen);
+        aStat.print();
+
+        CPPUNIT_ASSERT_MESSAGE("deviation should be less average", aStat.getMaxDeviation() < aStat.getAverage());
+
+        rtl_random_destroyPool(aPool);
+    }
+
+    // Change the following lines only, if you add, remove or rename
+    // member functions of the current class,
+    // because these macros are need by auto register mechanism.
+
+    CPPUNIT_TEST_SUITE(getBytes);
+    CPPUNIT_TEST(getBytes_000);
+    CPPUNIT_TEST(getBytes_001);
+    CPPUNIT_TEST(getBytes_002);
+    CPPUNIT_TEST(getBytes_003);
+    CPPUNIT_TEST(getBytes_003_1);
+    CPPUNIT_TEST_SUITE_END();
+}; // class getBytes
+
+CPPUNIT_TEST_SUITE_REGISTRATION(rtl_random::createPool);
+CPPUNIT_TEST_SUITE_REGISTRATION(rtl_random::destroyPool);
+CPPUNIT_TEST_SUITE_REGISTRATION(rtl_random::addBytes);
+CPPUNIT_TEST_SUITE_REGISTRATION(rtl_random::getBytes);
+} // namespace rtl_random
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */