68 lines
2.0 KiB
C++
68 lines
2.0 KiB
C++
#include "google/gtest/gtest.h"
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#include "../pointer.h"
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using namespace cpputils;
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using std::unique_ptr;
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using std::make_unique;
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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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class Child2: public Parent {};
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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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