75 lines
2.2 KiB
C++
75 lines
2.2 KiB
C++
#include "google/gtest/gtest.h"
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#include "../../pointer/cast.h"
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using namespace cpputils;
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using std::unique_ptr;
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// Putting them in an own namespace is needed, so they don't clash with globally defined Parent/Child classes
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namespace testobjs {
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class Parent {
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public:
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virtual ~Parent() { }
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};
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class Child : public Parent {
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};
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class Child2 : public Parent {
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};
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}
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using namespace testobjs;
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TEST(DynamicPointerMoveTest, NullPtrParentToChildCast) {
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unique_ptr<Parent> source(nullptr);
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unique_ptr<Child> casted = dynamic_pointer_move<Child>(source);
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EXPECT_EQ(nullptr, source.get());
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EXPECT_EQ(nullptr, casted.get());
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}
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TEST(DynamicPointerMoveTest, NullPtrChildToParentCast) {
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unique_ptr<Child> source(nullptr);
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unique_ptr<Parent> casted = dynamic_pointer_move<Parent>(source);
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EXPECT_EQ(nullptr, source.get());
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EXPECT_EQ(nullptr, casted.get());
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}
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TEST(DynamicPointerMoveTest, NullPtrSelfCast) {
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unique_ptr<Parent> source(nullptr);
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unique_ptr<Parent> casted = dynamic_pointer_move<Parent>(source);
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EXPECT_EQ(nullptr, source.get());
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EXPECT_EQ(nullptr, casted.get());
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}
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TEST(DynamicPointerMoveTest, ValidParentToChildCast) {
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Child *obj = new Child();
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unique_ptr<Parent> source(obj);
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unique_ptr<Child> casted = dynamic_pointer_move<Child>(source);
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EXPECT_EQ(nullptr, source.get()); // source lost ownership
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EXPECT_EQ(obj, casted.get());
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}
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TEST(DynamicPointerMoveTest, InvalidParentToChildCast1) {
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Parent *obj = new Parent();
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unique_ptr<Parent> source(obj);
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unique_ptr<Child> casted = dynamic_pointer_move<Child>(source);
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EXPECT_EQ(obj, source.get()); // source still has ownership
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EXPECT_EQ(nullptr, casted.get());
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}
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TEST(DynamicPointerMoveTest, InvalidParentToChildCast2) {
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Child2 *obj = new Child2();
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unique_ptr<Parent> source(obj);
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unique_ptr<Child> casted = dynamic_pointer_move<Child>(source);
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EXPECT_EQ(obj, source.get()); // source still has ownership
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EXPECT_EQ(nullptr, casted.get());
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}
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TEST(DynamicPointerMoveTest, ChildToParentCast) {
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Child *obj = new Child();
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unique_ptr<Child> source(obj);
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unique_ptr<Parent> casted = dynamic_pointer_move<Parent>(source);
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EXPECT_EQ(nullptr, source.get()); // source lost ownership
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EXPECT_EQ(obj, casted.get());
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}
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