o3tl/qa/test-vector_pool.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <sal/types.h>
  21 #include "cppunit/TestAssert.h"
  22 #include "cppunit/TestFixture.h"
  23 #include "cppunit/extensions/HelperMacros.h"
  24
  25 #include <o3tl/vector_pool.hxx>
  26
  27 using namespace ::o3tl;
  28
  29 class vector_pool_test : public CppUnit::TestFixture
  30 {
  31 public:
  32     void testPoolBasics()
  33     {
  34         vector_pool<int> aPool;
  35
  36         std::ptrdiff_t nIdx1 = aPool.alloc();
  37         std::ptrdiff_t nIdx2 = aPool.alloc();
  38         std::ptrdiff_t nIdx3 = aPool.alloc();
  39
  40         CPPUNIT_ASSERT_MESSAGE("allocator idx order 1", nIdx1 < nIdx2 );
  41         CPPUNIT_ASSERT_MESSAGE("allocator idx order 2", nIdx2 < nIdx3 );
  42
  43         aPool.free(nIdx2);
  44         aPool.free(nIdx3);
  45
  46         nIdx2 = aPool.alloc();
  47         nIdx3 = aPool.alloc();
  48
  49         CPPUNIT_ASSERT_MESSAGE("allocator idx order 1 after fragmentation", nIdx1 < nIdx3 );
  50         CPPUNIT_ASSERT_MESSAGE("allocator idx order 2 after fragmentation", nIdx3 < nIdx2 );
  51     }
  52
  53     void testPoolValueSemantics()
  54     {
  55         vector_pool<int> aPool;
  56
  57         std::ptrdiff_t nIdx1 = aPool.store(0);
  58         CPPUNIT_ASSERT_MESSAGE("allocator value semantics 1", aPool.get(nIdx1) == 0 );
  59
  60         std::ptrdiff_t nIdx2 = aPool.store(1);
  61         CPPUNIT_ASSERT_MESSAGE("allocator value semantics 2", aPool.get(nIdx2) == 1 );
  62
  63         std::ptrdiff_t nIdx3 = aPool.store(2);
  64         CPPUNIT_ASSERT_MESSAGE("allocator value semantics 3", aPool.get(nIdx3) == 2 );
  65
  66         aPool.free(nIdx2);
  67         aPool.free(nIdx3);
  68
  69         nIdx2 = aPool.store(1);
  70         CPPUNIT_ASSERT_MESSAGE("allocator value semantics 2 after fragmentation", aPool.get(nIdx2) == 1 );
  71
  72         nIdx3 = aPool.store(2);
  73         CPPUNIT_ASSERT_MESSAGE("allocator value semantics 3 after fragmentation", aPool.get(nIdx3) == 2 );
  74     }
  75
  76     // Change the following lines only, if you add, remove or rename
  77     // member functions of the current class,
  78     // because these macros are need by auto register mechanism.
  79
  80     CPPUNIT_TEST_SUITE(vector_pool_test);
  81     CPPUNIT_TEST(testPoolBasics);
  82     CPPUNIT_TEST(testPoolValueSemantics);
  83     CPPUNIT_TEST_SUITE_END();
  84 };
  85
  86 // -----------------------------------------------------------------------------
  87 CPPUNIT_TEST_SUITE_REGISTRATION(vector_pool_test);
  88
  89 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */