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///////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2015 Microsoft Corporation. All rights reserved.
//
// This code is licensed under the MIT License (MIT).
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
///////////////////////////////////////////////////////////////////////////////
#include <gsl/pointers> // for not_null, operator<, operator<=, operator>
#include <gtest/gtest.h>
#include "deathTestCommon.h"
using namespace gsl;
namespace
{
// clang-format off
GSL_SUPPRESS(f.4) // NO-FORMAT: attribute
// clang-format on
bool helper(not_null<int*> p) { return *p == 12; }
// clang-format off
GSL_SUPPRESS(f.4) // NO-FORMAT: attribute
// clang-format on
bool helper_const(not_null<const int*> p) { return *p == 12; }
// clang-format off
GSL_SUPPRESS(f.4) // NO-FORMAT: attribute
// clang-format on
bool strict_helper(strict_not_null<int*> p) { return *p == 12; }
// clang-format off
GSL_SUPPRESS(f.4) // NO-FORMAT: attribute
// clang-format on
bool strict_helper_const(strict_not_null<const int*> p) { return *p == 12; }
#ifdef CONFIRM_COMPILATION_ERRORS
int* return_pointer() { return nullptr; }
const int* return_pointer_const() { return nullptr; }
#endif
} // namespace
TEST(strict_notnull_tests, TestStrictNotNull)
{
{
// raw ptr <-> strict_not_null
int x = 42;
#ifdef CONFIRM_COMPILATION_ERRORS
strict_not_null<int*> snn = &x;
strict_helper(&x);
strict_helper_const(&x);
strict_helper(return_pointer());
strict_helper_const(return_pointer_const());
#endif
const strict_not_null<int*> snn1{&x};
helper(snn1);
helper_const(snn1);
EXPECT_TRUE(*snn1 == 42);
}
{
// strict_not_null -> strict_not_null
int x = 42;
strict_not_null<int*> snn1{&x};
const strict_not_null<int*> snn2{&x};
strict_helper(snn1);
strict_helper_const(snn1);
strict_helper_const(snn2);
EXPECT_TRUE(snn1 == snn2);
}
{
// strict_not_null -> not_null
int x = 42;
strict_not_null<int*> snn{&x};
const not_null<int*> nn1 = snn;
const not_null<int*> nn2{snn};
helper(snn);
helper_const(snn);
EXPECT_TRUE(snn == nn1);
EXPECT_TRUE(snn == nn2);
}
{
// not_null -> strict_not_null
int x = 42;
not_null<int*> nn{&x};
const strict_not_null<int*> snn1{nn};
const strict_not_null<int*> snn2{nn};
strict_helper(nn);
strict_helper_const(nn);
EXPECT_TRUE(snn1 == nn);
EXPECT_TRUE(snn2 == nn);
std::hash<strict_not_null<int*>> hash_snn;
std::hash<not_null<int*>> hash_nn;
EXPECT_TRUE(hash_nn(snn1) == hash_nn(nn));
EXPECT_TRUE(hash_snn(snn1) == hash_nn(nn));
EXPECT_TRUE(hash_nn(snn1) == hash_nn(snn2));
EXPECT_TRUE(hash_snn(snn1) == hash_snn(nn));
}
#ifdef CONFIRM_COMPILATION_ERRORS
{
strict_not_null<int*> p{nullptr};
}
#endif
}
#if defined(__cplusplus) && (__cplusplus >= 201703L)
TEST(strict_notnull_tests, TestStrictNotNullConstructorTypeDeduction)
{
const auto terminateHandler = std::set_terminate([] {
std::cerr << "Expected Death. TestStrictNotNullConstructorTypeDeduction";
std::abort();
});
const auto expected = GetExpectedDeathString(terminateHandler);
{
int i = 42;
strict_not_null x{&i};
helper(strict_not_null{&i});
helper_const(strict_not_null{&i});
EXPECT_TRUE(*x == 42);
}
{
int i = 42;
int* p = &i;
strict_not_null x{p};
helper(strict_not_null{p});
helper_const(strict_not_null{p});
EXPECT_TRUE(*x == 42);
}
{
auto workaround_macro = []() {
int* p1 = nullptr;
const strict_not_null x{p1};
};
EXPECT_DEATH(workaround_macro(), expected);
}
{
auto workaround_macro = []() {
const int* p1 = nullptr;
const strict_not_null x{p1};
};
EXPECT_DEATH(workaround_macro(), expected);
}
{
int* p = nullptr;
EXPECT_DEATH(helper(strict_not_null{p}), expected);
EXPECT_DEATH(helper_const(strict_not_null{p}), expected);
}
#ifdef CONFIRM_COMPILATION_ERRORS
{
strict_not_null x{nullptr};
helper(strict_not_null{nullptr});
helper_const(strict_not_null{nullptr});
}
#endif
}
#endif // #if defined(__cplusplus) && (__cplusplus >= 201703L)
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