(self)
| 1169 | self.assertNotIsInstance(NextOnly(), Iterator) |
| 1170 | |
| 1171 | def test_Generator(self): |
| 1172 | class NonGen1: |
| 1173 | def __iter__(self): return self |
| 1174 | def __next__(self): return None |
| 1175 | def close(self): pass |
| 1176 | def throw(self, typ, val=None, tb=None): pass |
| 1177 | |
| 1178 | class NonGen2: |
| 1179 | def __iter__(self): return self |
| 1180 | def __next__(self): return None |
| 1181 | def close(self): pass |
| 1182 | def send(self, value): return value |
| 1183 | |
| 1184 | class NonGen3: |
| 1185 | def close(self): pass |
| 1186 | def send(self, value): return value |
| 1187 | def throw(self, typ, val=None, tb=None): pass |
| 1188 | |
| 1189 | non_samples = [ |
| 1190 | None, 42, 3.14, 1j, b"", "", (), [], {}, set(), |
| 1191 | iter(()), iter([]), NonGen1(), NonGen2(), NonGen3()] |
| 1192 | for x in non_samples: |
| 1193 | self.assertNotIsInstance(x, Generator) |
| 1194 | self.assertNotIsSubclass(type(x), Generator) |
| 1195 | |
| 1196 | class Gen: |
| 1197 | def __iter__(self): return self |
| 1198 | def __next__(self): return None |
| 1199 | def close(self): pass |
| 1200 | def send(self, value): return value |
| 1201 | def throw(self, typ, val=None, tb=None): pass |
| 1202 | |
| 1203 | class MinimalGen(Generator): |
| 1204 | def send(self, value): |
| 1205 | return value |
| 1206 | def throw(self, typ, val=None, tb=None): |
| 1207 | super().throw(typ, val, tb) |
| 1208 | |
| 1209 | def gen(): |
| 1210 | yield 1 |
| 1211 | |
| 1212 | samples = [gen(), (lambda: (yield))(), Gen(), MinimalGen()] |
| 1213 | for x in samples: |
| 1214 | self.assertIsInstance(x, Iterator) |
| 1215 | self.assertIsInstance(x, Generator) |
| 1216 | self.assertIsSubclass(type(x), Generator) |
| 1217 | self.validate_abstract_methods(Generator, 'send', 'throw') |
| 1218 | |
| 1219 | # mixin tests |
| 1220 | mgen = MinimalGen() |
| 1221 | self.assertIs(mgen, iter(mgen)) |
| 1222 | self.assertIs(mgen.send(None), next(mgen)) |
| 1223 | self.assertEqual(2, mgen.send(2)) |
| 1224 | self.assertIsNone(mgen.close()) |
| 1225 | self.assertRaises(ValueError, mgen.throw, ValueError) |
| 1226 | self.assertRaisesRegex(ValueError, "^huhu$", |
| 1227 | mgen.throw, ValueError, ValueError("huhu")) |
| 1228 | self.assertRaises(StopIteration, mgen.throw, StopIteration()) |
nothing calls this directly
no test coverage detected