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Add test cases for dataclasses. #17909

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Merged
merged 2 commits into from
Jan 9, 2020
Merged

Add test cases for dataclasses. #17909

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93d0c50
Add test cases for dataclasses.
tirkarthi Jan 8, 2020
edcda32
Remove dataclass_params repr testcase.
tirkarthi Jan 9, 2020
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19 changes: 19 additions & 0 deletions Lib/test/test_dataclasses.py
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,25 @@ class C:
o = C(42)
self.assertEqual(o.x, 42)

def test_field_default_default_factory_error(self):
msg = "cannot specify both default and default_factory"
with self.assertRaisesRegex(ValueError, msg):
@dataclass
class C:
x: int = field(default=1, default_factory=int)

def test_field_repr(self):
int_field = field(default=1, init=True, repr=False)
int_field.name = "id"
repr_output = repr(int_field)
expected_output = "Field(name='id',type=None," \
f"default=1,default_factory={MISSING!r}," \
"init=True,repr=False,hash=None," \
"compare=True,metadata=mappingproxy({})," \
"_field_type=None)"

self.assertEqual(repr_output, expected_output)

def test_named_init_params(self):
@dataclass
class C:
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