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|
from libcst.codemod import CodemodTest
from strawberry.codemods.maybe_optional import ConvertMaybeToOptional
class TestConvertMaybeToOptional(CodemodTest):
TRANSFORM = ConvertMaybeToOptional
def test_simple_maybe(self) -> None:
before = """
from strawberry import Maybe
field: Maybe[str]
"""
after = """
from strawberry import Maybe
from typing import Union
field: Maybe[Union[str, None]]
"""
self.assertCodemod(before, after, use_pipe_syntax=False)
def test_simple_maybe_union_syntax(self) -> None:
before = """
from strawberry import Maybe
field: Maybe[str]
"""
after = """
from strawberry import Maybe
from typing import Union
field: Maybe[Union[str, None]]
"""
self.assertCodemod(before, after, use_pipe_syntax=False)
def test_strawberry_maybe(self) -> None:
before = """
import strawberry
field: strawberry.Maybe[int]
"""
after = """
import strawberry
from typing import Union
field: strawberry.Maybe[Union[int, None]]
"""
self.assertCodemod(before, after, use_pipe_syntax=False)
def test_nested_type(self) -> None:
before = """
from strawberry import Maybe
field: Maybe[List[str]]
"""
after = """
from strawberry import Maybe
from typing import Union
field: Maybe[Union[List[str], None]]
"""
self.assertCodemod(before, after, use_pipe_syntax=False)
def test_already_has_none_pipe(self) -> None:
before = """
from strawberry import Maybe
field: Maybe[Union[str, None]]
"""
after = """
from strawberry import Maybe
field: Maybe[Union[str, None]]
"""
self.assertCodemod(before, after, use_pipe_syntax=False)
def test_already_has_none_union(self) -> None:
before = """
from strawberry import Maybe
from typing import Union
field: Maybe[Union[str, None]]
"""
after = """
from strawberry import Maybe
from typing import Union
field: Maybe[Union[str, None]]
"""
self.assertCodemod(before, after, use_pipe_syntax=False)
def test_multiple_maybe_fields(self) -> None:
before = """
from strawberry import Maybe
@strawberry.type
class User:
name: Maybe[str]
age: Maybe[int]
email: Maybe[str]
"""
after = """
from strawberry import Maybe
from typing import Union
@strawberry.type
class User:
name: Maybe[Union[str, None]]
age: Maybe[Union[int, None]]
email: Maybe[Union[str, None]]
"""
self.assertCodemod(before, after, use_pipe_syntax=False)
def test_function_annotation(self) -> None:
before = """
from strawberry import Maybe
def get_user() -> Maybe[User]:
return None
"""
after = """
from strawberry import Maybe
from typing import Union
def get_user() -> Maybe[Union[User, None]]:
return None
"""
self.assertCodemod(before, after, use_pipe_syntax=False)
def test_generic_type(self) -> None:
before = """
from strawberry import Maybe
field: Maybe[Dict[str, Any]]
"""
after = """
from strawberry import Maybe
from typing import Union
field: Maybe[Union[Dict[str, Any], None]]
"""
self.assertCodemod(before, after, use_pipe_syntax=False)
def test_union_type_inside_maybe(self) -> None:
before = """
from strawberry import Maybe
from typing import Union
field: Maybe[Union[str, int]]
"""
after = """
from strawberry import Maybe
from typing import Union
field: Maybe[Union[Union[str, int], None]]
"""
self.assertCodemod(before, after, use_pipe_syntax=False)
|
