comphelper/qa/unit/test_guards.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.
   4  *
   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
  10 #include <comphelper/flagguard.hxx>
  11 #include <unotest/bootstrapfixturebase.hxx>
  12
  13 CPPUNIT_TEST_FIXTURE(CppUnit::TestFixture, testScopeGuard)
  14 {
  15     // Test that comphelper::ScopeGuard executes its parameter on destruction
  16
  17     // initial value "true", out-of-scope ScopeGuard function executes and changes the value to "false"
  18     bool bFlag = true;
  19     {
  20         comphelper::ScopeGuard aGuard([&bFlag] { bFlag = false; });
  21         CPPUNIT_ASSERT(bFlag);
  22     }
  23     CPPUNIT_ASSERT(!bFlag);
  24 }
  25
  26 CPPUNIT_TEST_FIXTURE(CppUnit::TestFixture, testFlagGuard)
  27 {
  28     // Test that comphelper::FlagGuard properly sets and resets the flag
  29
  30     // initial value "false", change to "true", out-of-scope change to "false"
  31     bool bFlag = false;
  32     {
  33         comphelper::FlagGuard aGuard(bFlag);
  34         CPPUNIT_ASSERT(bFlag);
  35     }
  36     // comphelper::FlagGuard must reset flag to false on destruction unconditionally
  37     CPPUNIT_ASSERT(!bFlag);
  38
  39     // initial value "true", retain the value at "true", out-of-scope change to "false"
  40     bFlag = true;
  41     {
  42         comphelper::FlagGuard aGuard(bFlag);
  43         CPPUNIT_ASSERT(bFlag);
  44     }
  45     // comphelper::FlagGuard must reset flag to false on destruction unconditionally
  46     CPPUNIT_ASSERT(!bFlag);
  47 }
  48
  49 CPPUNIT_TEST_FIXTURE(CppUnit::TestFixture, testFlagRestorationGuard)
  50 {
  51     // Test that comphelper::FlagRestorationGuard properly sets and resets the flag
  52
  53     // initial value "true", change to "false", out-of-scope change to "true"
  54
  55     bool bFlag = true;
  56     {
  57         comphelper::FlagRestorationGuard aGuard(bFlag, false);
  58         CPPUNIT_ASSERT(!bFlag);
  59     }
  60     // comphelper::FlagRestorationGuard must reset flag to initial state on destruction
  61     CPPUNIT_ASSERT(bFlag);
  62 }
  63
  64 CPPUNIT_TEST_FIXTURE(CppUnit::TestFixture, testValueRestorationGuard)
  65 {
  66     // Test that comphelper::ValueRestorationGuard properly sets and resets the (int) value
  67
  68     int value = 199;
  69
  70     // set value and restore after scope ends
  71     {
  72         CPPUNIT_ASSERT_EQUAL(199, value);
  73         comphelper::ValueRestorationGuard aGuard(value, 100);
  74         CPPUNIT_ASSERT_EQUAL(100, value);
  75     }
  76     CPPUNIT_ASSERT_EQUAL(199, value);
  77
  78     // set value, manually setto another value and restore after scope ends
  79     {
  80         CPPUNIT_ASSERT_EQUAL(199, value);
  81         comphelper::ValueRestorationGuard aGuard(value, 100);
  82         CPPUNIT_ASSERT_EQUAL(100, value);
  83         value = 200;
  84     }
  85     CPPUNIT_ASSERT_EQUAL(199, value);
  86 }
  87
  88 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */