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#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;
(void)i;
}
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>());
}
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();
}
};
CPPUNIT_TEST_SUITE_REGISTRATION(AtomicTest);
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