def test_runner_default(self) -> None:
before = """
def foo() -> None:
pass
def bar() -> int:
return 5
"""
after = """
# A comment
def foo() -> None:
pass
def bar() -> int:
return 5
"""
class SimpleCodemod(Codemod):
def transform_module_impl(self, tree: cst.Module) -> cst.Module:
self.warn("Testing")
return tree.with_changes(
header=[cst.EmptyLine(comment=cst.Comment("# A comment"))])
transform = SimpleCodemod(CodemodContext())
response = transform_module(transform, dedent(before))
self.assertIsInstance(response, TransformSuccess)
assert isinstance(response, TransformSuccess)
self.assertCodeEqual(response.code, after)
self.assertEqual(response.warning_messages, ["Testing"])
def test_runner_interrupted(self) -> None:
code = """
def foo() -> None:
pass
def bar() -> int:
return 5
"""
class SimpleCodemod(Codemod):
def transform_module_impl(self, tree: cst.Module) -> cst.Module:
raise KeyboardInterrupt("Testing")
transform = SimpleCodemod(CodemodContext())
response = transform_module(transform, dedent(code))
self.assertIsInstance(response, TransformExit)
def test_runner_skip(self) -> None:
code = """
def foo() -> None:
pass
def bar() -> int:
return 5
"""
class SimpleCodemod(Codemod):
def transform_module_impl(self, tree: cst.Module) -> cst.Module:
self.warn("Testing")
raise SkipFile()
transform = SimpleCodemod(CodemodContext())
response = transform_module(transform, dedent(code))
self.assertIsInstance(response, TransformSkip)
self.assertEqual(response.warning_messages, ["Testing"])
def test_runner_failure(self) -> None:
code = """
def foo() -> None:
pass
def bar() -> int:
return 5
"""
class SimpleCodemod(Codemod):
def transform_module_impl(self, tree: cst.Module) -> cst.Module:
self.warn("Testing")
somedict: Dict[str, str] = {}
somedict["invalid_key"]
return tree
transform = SimpleCodemod(CodemodContext())
response = transform_module(transform, dedent(code))
self.assertIsInstance(response, TransformFailure)
assert isinstance(response, TransformFailure)
self.assertEqual(response.warning_messages, ["Testing"])
self.assertIsInstance(response.error, KeyError)