o3tl/qa/test-heap_ptr.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  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/heap_ptr.hxx>
  26
  27 using o3tl::heap_ptr;
  28
  29 class Help
  30 {
  31   public:
  32     explicit            Help(
  33                             int                 i_n )
  34                                                 : n(i_n) { ++nInstanceCount_; }
  35                         ~Help()                 { --nInstanceCount_; }
  36     int                 Value() const           { return n; }
  37     static int          InstanceCount_()        { return nInstanceCount_; }
  38
  39   private:
  40     int                 n;
  41     static int          nInstanceCount_;
  42 };
  43 int Help::nInstanceCount_ = 0;
  44
  45
  46 class heap_ptr_test : public CppUnit::TestFixture
  47 {
  48   public:
  49     void global()
  50     {
  51         // Construction
  52         heap_ptr<Help>
  53             t_empty;
  54         const heap_ptr<Help>
  55             t0( new Help(7000) );
  56         heap_ptr<Help>
  57             t1( new Help(10) );
  58         heap_ptr<Help>
  59             t2( new Help(20) );
  60
  61         int nHelpCount = 3;
  62
  63         CPPUNIT_ASSERT_MESSAGE("ctor1", ! t_empty.is());
  64         CPPUNIT_ASSERT_MESSAGE("ctor2",   t0.is());
  65         CPPUNIT_ASSERT_MESSAGE("ctor3",   (*t0).Value() == 7000 );
  66         CPPUNIT_ASSERT_MESSAGE("ctor4",   t0->Value() == 7000 );
  67         CPPUNIT_ASSERT_MESSAGE("ctor5",   t0.get() == t0.operator->() );
  68         CPPUNIT_ASSERT_MESSAGE("ctor6",   t0.get() == &(*t0) );
  69
  70         CPPUNIT_ASSERT_MESSAGE("ctor7",   t1.is());
  71         CPPUNIT_ASSERT_MESSAGE("ctor8",   (*t1).Value() == 10 );
  72         CPPUNIT_ASSERT_MESSAGE("ctor9",   t1->Value() == 10 );
  73         CPPUNIT_ASSERT_MESSAGE("ctor10",   t1.get() == t1.operator->() );
  74         CPPUNIT_ASSERT_MESSAGE("ctor11",   t1.get() == &(*t1) );
  75
  76         CPPUNIT_ASSERT_MESSAGE("ctor12",   t2.operator*().Value() == 20);
  77         CPPUNIT_ASSERT_MESSAGE("ctor13",   Help::InstanceCount_() == nHelpCount);
  78
  79
  80         // Operator safe_bool() / bool()
  81         CPPUNIT_ASSERT_MESSAGE("bool1", ! t_empty);
  82         CPPUNIT_ASSERT_MESSAGE("bool2", t0);
  83         CPPUNIT_ASSERT_MESSAGE("bool3", t1.is() == static_cast<bool>(t1));
  84
  85
  86         // Assignment, reset() and release()
  87             // Release
  88         Help * hp = t1.release();
  89         CPPUNIT_ASSERT_MESSAGE("release1", ! t1.is() );
  90         CPPUNIT_ASSERT_MESSAGE("release2", t1.get() == 0 );
  91         CPPUNIT_ASSERT_MESSAGE("release3", t1.operator->() == 0 );
  92         CPPUNIT_ASSERT_MESSAGE("release4", Help::InstanceCount_() == nHelpCount);
  93
  94             // operator=()
  95         t_empty = hp;
  96         CPPUNIT_ASSERT_MESSAGE("assign1", t_empty.is() );
  97         CPPUNIT_ASSERT_MESSAGE("assign2", Help::InstanceCount_() == nHelpCount);
  98
  99         t1 = t_empty.release();
 100         CPPUNIT_ASSERT_MESSAGE("assign3",     t1.is() );
 101         CPPUNIT_ASSERT_MESSAGE("assign4",   ! t_empty.is() );
 102         CPPUNIT_ASSERT_MESSAGE("assign5",   Help::InstanceCount_() == nHelpCount);
 103
 104             // reset()
 105         hp = new Help(30);
 106         ++nHelpCount;
 107
 108         t_empty.reset(hp);
 109         CPPUNIT_ASSERT_MESSAGE("reset1",  Help::InstanceCount_() == nHelpCount);
 110         CPPUNIT_ASSERT_MESSAGE("reset2",  t_empty.is() );
 111         CPPUNIT_ASSERT_MESSAGE("reset3",  t_empty.get() == hp );
 112
 113             // Ignore second assignment
 114         t_empty = hp;
 115         CPPUNIT_ASSERT_MESSAGE("selfassign1",  Help::InstanceCount_() == nHelpCount);
 116         CPPUNIT_ASSERT_MESSAGE("selfassign2",  t_empty.is() );
 117         CPPUNIT_ASSERT_MESSAGE("selfassign3",  t_empty.get() == hp );
 118
 119         t_empty.reset(0);
 120         hp = 0;
 121         --nHelpCount;
 122         CPPUNIT_ASSERT_MESSAGE("reset4",   ! t_empty.is() );
 123         CPPUNIT_ASSERT_MESSAGE("reset5",   Help::InstanceCount_() == nHelpCount);
 124
 125
 126         // swap
 127         t1.swap(t2);
 128         CPPUNIT_ASSERT_MESSAGE("swap1",   t1->Value() == 20 );
 129         CPPUNIT_ASSERT_MESSAGE("swap2",   t2->Value() == 10 );
 130         CPPUNIT_ASSERT_MESSAGE("swap3",   Help::InstanceCount_() == nHelpCount);
 131
 132         o3tl::swap(t1,t2);
 133         CPPUNIT_ASSERT_MESSAGE("swap4",   t1->Value() == 10 );
 134         CPPUNIT_ASSERT_MESSAGE("swap5",   t2->Value() == 20 );
 135         CPPUNIT_ASSERT_MESSAGE("swap6",   Help::InstanceCount_() == nHelpCount);
 136
 137         // RAII
 138         {
 139             heap_ptr<Help>
 140                 t_raii( new Help(55) );
 141             CPPUNIT_ASSERT_MESSAGE("raii1", Help::InstanceCount_() == nHelpCount + 1);
 142         }
 143         CPPUNIT_ASSERT_MESSAGE("raii2", Help::InstanceCount_() == nHelpCount);
 144     }
 145
 146
 147     // These macros are needed by auto register mechanism.
 148     CPPUNIT_TEST_SUITE(heap_ptr_test);
 149     CPPUNIT_TEST(global);
 150     CPPUNIT_TEST_SUITE_END();
 151 }; // class heap_ptr_test
 152
 153 // -----------------------------------------------------------------------------
 154 CPPUNIT_TEST_SUITE_REGISTRATION(heap_ptr_test);
 155
 156 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */