#include <cxxtest/TestSuite.h> #include "common/scummsys.h" #include <stddef.h> #include <common/pack-start.h> // START STRUCT PACKING struct TestStruct { uint32 x; byte y; uint16 z; uint32 a; byte b; } PACKED_STRUCT; #include <common/pack-end.h> // END STRUCT PACKING #define OFFS(type,item) (((ptrdiff_t)(&((type *)42)->type::item))-42) class PackTestSuite : public CxxTest::TestSuite { public: void test_packing() { TS_ASSERT_EQUALS(sizeof(TestStruct), size_t(4+1+2+4+1)); } void test_offsets() { TS_ASSERT_EQUALS(OFFS(TestStruct, x), (ptrdiff_t)0); TS_ASSERT_EQUALS(OFFS(TestStruct, y), (ptrdiff_t)4); TS_ASSERT_EQUALS(OFFS(TestStruct, z), (ptrdiff_t)5); TS_ASSERT_EQUALS(OFFS(TestStruct, a), (ptrdiff_t)7); TS_ASSERT_EQUALS(OFFS(TestStruct, b), (ptrdiff_t)11); } };