scummvm/test/common/ptr.h

#include <cxxtest/TestSuite.h>

#include "common/ptr.h"

class PtrTestSuite : public CxxTest::TestSuite
{
	public:
	void test_assign() {
		Common::SharedPtr<int> p1(new int(1));
		TS_ASSERT(p1.unique());
		TS_ASSERT_EQUALS(*p1, 1);

		{
			Common::SharedPtr<int> p2 = p1;
			TS_ASSERT(!p1.unique());
			TS_ASSERT(p1.refCount() == p2.refCount());
			TS_ASSERT(p1.refCount() == 2);
			TS_ASSERT(p1 == p2);
			TS_ASSERT_EQUALS(*p2, 1);
			{
				Common::SharedPtr<int> p3;
				p3 = p2;
				TS_ASSERT(p3 == p2 && p3 == p1);
				TS_ASSERT(p1.refCount() == 3);
				TS_ASSERT_EQUALS(*p3, 1);
				*p3 = 0;
				TS_ASSERT_EQUALS(*p3, 0);
			}
			TS_ASSERT_EQUALS(*p2, 0);
			TS_ASSERT(p1.refCount() == 2);
		}

		TS_ASSERT_EQUALS(*p1, 0);
		TS_ASSERT(p1.unique());
	}

	template<class T>
	struct Deleter {
		bool *test;
		void operator()(T *ptr) { *test = true; delete ptr; }
	};

	void test_deleter() {
		Deleter<int> myDeleter;
		myDeleter.test = new bool(false);
		
		{
			Common::SharedPtr<int> p(new int(1), myDeleter);
		}

		TS_ASSERT_EQUALS(*myDeleter.test, true);
		delete myDeleter.test;
	}

	void test_compare() {
		Common::SharedPtr<int> p1(new int(1));
		Common::SharedPtr<int> p2;
		
		TS_ASSERT(p1);
		TS_ASSERT(!p2);

		TS_ASSERT(p1 != 0);
		TS_ASSERT(p2 == 0);
	}

	struct A {
		int a;
	};

	struct B : public A {
		int b;
	};

	void test_cast() {
		Common::SharedPtr<B> b(new B);
		Common::SharedPtr<A> a(b);
		a = b;
	}
};