| 21 | |
| 22 | class StructsTest(DFFITest): |
| 23 | def test_structs(self): |
| 24 | FFI=self.FFI |
| 25 | CU = FFI.compile(''' |
| 26 | struct A |
| 27 | { |
| 28 | unsigned char a; |
| 29 | short b; |
| 30 | }; |
| 31 | |
| 32 | int check(struct A a, unsigned char aref, short bref) { |
| 33 | return (a.a == aref) && (a.b == bref); |
| 34 | } |
| 35 | int checkptr(struct A* a, unsigned char aref, short bref) { |
| 36 | return (a->a == aref) && (a->b == bref); |
| 37 | } |
| 38 | void set(struct A* a) { |
| 39 | a->a = 59; |
| 40 | a->b = 1111; |
| 41 | } |
| 42 | struct A init() { |
| 43 | struct A ret; |
| 44 | ret.a = 44; |
| 45 | ret.b = 5555; |
| 46 | return ret; |
| 47 | } |
| 48 | ''') |
| 49 | A = CU.types.A |
| 50 | fields_name = sorted((f.name for f in A)) |
| 51 | self.assertEqual(fields_name[0], 'a') |
| 52 | self.assertEqual(fields_name[1], 'b') |
| 53 | |
| 54 | Av = CU.types.A(a=1,b=2) |
| 55 | |
| 56 | # Direct data access throught a memoryview |
| 57 | mv = pydffi.view_as_bytes(Av) |
| 58 | |
| 59 | # Set a throught mv |
| 60 | |
| 61 | v = 5 if sys.version_info >= (3, 0) else struct.pack("B", 5) |
| 62 | mv[0] = v |
| 63 | self.assertEqual(Av.a, 5) |
| 64 | self.assertEqual(Av.b, 2) |
| 65 | self.assertTrue(getattr(CU.funcs, "check")(Av, 5, 2)) |
| 66 | |
| 67 | pAv = pydffi.ptr(Av) |
| 68 | self.assertTrue(CU.funcs.checkptr(pAv, 5, 2)) |
| 69 | CU.funcs.set(pAv) |
| 70 | self.assertTrue(getattr(CU.funcs, "check")(Av, 59, 1111)) |
| 71 | self.assertEqual(Av.a, 59) |
| 72 | self.assertEqual(Av.b, 1111) |
| 73 | |
| 74 | Av = CU.funcs.init() |
| 75 | self.assertEqual(Av.a, 44) |
| 76 | self.assertEqual(Av.b, 5555) |
| 77 | |
| 78 | if __name__ == '__main__': |
| 79 | unittest.main() |