libcryfs/test/pointer_test.cpp

68 lines
2.0 KiB
C++
Raw Normal View History

#include "google/gtest/gtest.h"
#include "../pointer.h"
2015-02-16 21:36:00 +01:00
using namespace cpputils;
using std::unique_ptr;
using std::make_unique;
class Parent {
public:
virtual ~Parent() {}
};
class Child: public Parent {};
class Child2: public Parent {};
TEST(DynamicPointerMoveTest, NullPtrParentToChildCast) {
unique_ptr<Parent> source(nullptr);
unique_ptr<Child> casted = dynamic_pointer_move<Child>(source);
EXPECT_EQ(nullptr, source.get());
EXPECT_EQ(nullptr, casted.get());
}
TEST(DynamicPointerMoveTest, NullPtrChildToParentCast) {
unique_ptr<Child> source(nullptr);
unique_ptr<Parent> casted = dynamic_pointer_move<Parent>(source);
EXPECT_EQ(nullptr, source.get());
EXPECT_EQ(nullptr, casted.get());
}
TEST(DynamicPointerMoveTest, NullPtrSelfCast) {
unique_ptr<Parent> source(nullptr);
unique_ptr<Parent> casted = dynamic_pointer_move<Parent>(source);
EXPECT_EQ(nullptr, source.get());
EXPECT_EQ(nullptr, casted.get());
}
TEST(DynamicPointerMoveTest, ValidParentToChildCast) {
Child *obj = new Child();
unique_ptr<Parent> source(obj);
unique_ptr<Child> casted = dynamic_pointer_move<Child>(source);
EXPECT_EQ(nullptr, source.get()); // source lost ownership
EXPECT_EQ(obj, casted.get());
}
TEST(DynamicPointerMoveTest, InvalidParentToChildCast1) {
Parent *obj = new Parent();
unique_ptr<Parent> source(obj);
unique_ptr<Child> casted = dynamic_pointer_move<Child>(source);
EXPECT_EQ(obj, source.get()); // source still has ownership
EXPECT_EQ(nullptr, casted.get());
}
TEST(DynamicPointerMoveTest, InvalidParentToChildCast2) {
Child2 *obj = new Child2();
unique_ptr<Parent> source(obj);
unique_ptr<Child> casted = dynamic_pointer_move<Child>(source);
EXPECT_EQ(obj, source.get()); // source still has ownership
EXPECT_EQ(nullptr, casted.get());
}
TEST(DynamicPointerMoveTest, ChildToParentCast) {
Child *obj = new Child();
unique_ptr<Child> source(obj);
unique_ptr<Parent> casted = dynamic_pointer_move<Parent>(source);
EXPECT_EQ(nullptr, source.get()); // source lost ownership
EXPECT_EQ(obj, casted.get());
}