1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
|
/*=========================================================================
*
* Copyright NumFOCUS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
// First include the header file to be tested:
#include "itkDeref.h"
#include <gtest/gtest.h>
#include "itkObject.h"
// Tests that `Deref(ptr)` throws a `DerefError` exception when its argument is null.
TEST(Deref, ThrowsExceptionWhenArgumentIsNull)
{
const auto check = [](const auto & ptr) { EXPECT_THROW(itk::Deref(ptr), itk::DerefError); };
check(static_cast<int *>(nullptr));
check(static_cast<const int *>(nullptr));
check(static_cast<itk::Object *>(nullptr));
}
// Tests that `Deref(ptr)` returns the same reference as `*ptr`, when `ptr` is not null.
TEST(Deref, ReturnsReferenceWhenArgumentIsNotNull)
{
const auto check = [](const auto & ptr) {
const auto & ref = itk::Deref(ptr);
EXPECT_EQ(&ref, &*ptr);
};
constexpr int i{};
check(&i);
check(std::make_unique<int>().get());
check(itk::Object::New().get());
}
|