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Diffstat (limited to 'test/atomictest.cc')
| -rw-r--r-- | test/atomictest.cc | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/test/atomictest.cc b/test/atomictest.cc new file mode 100644 index 0000000..1718b33 --- /dev/null +++ b/test/atomictest.cc @@ -0,0 +1,135 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * atomic.cc + * + * Wed Mar 23 09:17:12 CET 2016 + * Copyright 2016 Christian Glöckner + * cgloeckner@freenet.de + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include <cppunit/extensions/HelperMacros.h> + +#include <atomic.h> + +class AtomicTest + : public CppUnit::TestFixture { + + CPPUNIT_TEST_SUITE(AtomicTest); + CPPUNIT_TEST(podAtomicsUseStandardImpl); + CPPUNIT_TEST(nonPodAtomicsUseOwnImpl); + CPPUNIT_TEST(podAtomicCanBeDefaultInitialized); + CPPUNIT_TEST(nonPodAtomicCanBeDefaultInitialized); + CPPUNIT_TEST(podAtomicCanBeValueInitialized); + CPPUNIT_TEST(nonPodAtomicCanBeValueInitialized); + CPPUNIT_TEST(podAtomicCanBeValueAssigned); + CPPUNIT_TEST(nonPodAtomicCanBeValueAssigned); + CPPUNIT_TEST(podAtomicsAreLockFree); + CPPUNIT_TEST_SUITE_END(); + + public: + void setUp() {} + void tearDown() {} + + void podAtomicsUseStandardImpl() { + CPPUNIT_ASSERT(isUsingStandardImpl<bool>()); + CPPUNIT_ASSERT(isUsingStandardImpl<unsigned short int>()); + CPPUNIT_ASSERT(isUsingStandardImpl<short int>()); + CPPUNIT_ASSERT(isUsingStandardImpl<unsigned int>()); + CPPUNIT_ASSERT(isUsingStandardImpl<int>()); + CPPUNIT_ASSERT(isUsingStandardImpl<unsigned long int>()); + CPPUNIT_ASSERT(isUsingStandardImpl<long int>()); + CPPUNIT_ASSERT(isUsingStandardImpl<unsigned long long int>()); + CPPUNIT_ASSERT(isUsingStandardImpl<long long int>()); + CPPUNIT_ASSERT(isUsingStandardImpl<float>()); + CPPUNIT_ASSERT(isUsingStandardImpl<double>()); + CPPUNIT_ASSERT(isUsingStandardImpl<long double>()); + } + + void nonPodAtomicsUseOwnImpl() { + CPPUNIT_ASSERT(!isUsingStandardImpl<std::string>()); + } + + void podAtomicCanBeDefaultInitialized() { + Atomic<int> i; + // note: i is initialized with garbage + } + + void nonPodAtomicCanBeDefaultInitialized() { + Atomic<std::string> s; + CPPUNIT_ASSERT_EQUAL(s.load(), std::string{}); + } + + void podAtomicCanBeValueInitialized() { + Atomic<int> i{5}; + CPPUNIT_ASSERT_EQUAL(i.load(), 5); + } + + void nonPodAtomicCanBeValueInitialized() { + Atomic<std::string> s{"hello world"}; + CPPUNIT_ASSERT_EQUAL(s.load(), std::string{"hello world"}); + } + + void podAtomicCanBeValueAssigned() { + Atomic<int> i; + i = 5; + CPPUNIT_ASSERT_EQUAL(i.load(), 5); + } + + void nonPodAtomicCanBeValueAssigned() { + Atomic<std::string> s; + s = "hello world"; + CPPUNIT_ASSERT_EQUAL(s.load(), std::string{"hello world"}); + } + + void podAtomicsAreLockFree() { + CPPUNIT_ASSERT(isLockFree<bool>()); + CPPUNIT_ASSERT(isLockFree<unsigned short int>()); + CPPUNIT_ASSERT(isLockFree<short int>()); + CPPUNIT_ASSERT(isLockFree<unsigned int>()); + CPPUNIT_ASSERT(isLockFree<int>()); + CPPUNIT_ASSERT(isLockFree<unsigned long int>()); + CPPUNIT_ASSERT(isLockFree<long int>()); + CPPUNIT_ASSERT(isLockFree<unsigned long long int>()); + CPPUNIT_ASSERT(isLockFree<long long int>()); + CPPUNIT_ASSERT(isLockFree<float>()); + CPPUNIT_ASSERT(isLockFree<double>()); + + // compile error: undefined reference to `__atomic_is_lock_free' + //CPPUNIT_ASSERT(isLockFree<long double>()); + } + + // todo: further testing + + private: + template <typename T> + bool isUsingStandardImpl() { + return std::is_base_of<std::atomic<T>, Atomic<T>>::value; + } + + template <typename T> + bool isLockFree() { + Atomic<T> a; + return a.is_lock_free(); + } +}; + +// Registers the fixture into the 'registry' +CPPUNIT_TEST_SUITE_REGISTRATION(AtomicTest); + |