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|
# Copyright (c) Meta Platforms, Inc. and affiliates.
#
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.
import pickle
from typing import Union
import libcst as cst
import libcst.matchers as m
from libcst.matchers import (
leave,
MatchDecoratorMismatch,
MatcherDecoratableTransformer,
MatcherDecoratableVisitor,
visit,
)
from libcst.testing.utils import UnitTest
class MatchersVisitLeaveDecoratorTypingTest(UnitTest):
def test_valid_collector_simple(self) -> None:
class TestVisitor(MatcherDecoratableVisitor):
@visit(m.SimpleString())
def _string_visit(self, node: cst.SimpleString) -> None:
pass
@leave(m.SimpleString())
def _string_leave(self, original_node: cst.SimpleString) -> None:
pass
# Instantiating this class should not raise any errors
TestVisitor()
def test_valid_transformer_simple(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@visit(m.SimpleString())
def _string_visit(self, node: cst.SimpleString) -> None:
pass
@leave(m.SimpleString())
def _string_leave(
self, original_node: cst.SimpleString, updated_node: cst.SimpleString
) -> cst.SimpleString:
return updated_node
# Instantiating this class should not raise any errors
TestVisitor()
def test_valid_transformer_base_class(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@leave(m.SimpleString())
def _string_leave(
self, original_node: cst.SimpleString, updated_node: cst.SimpleString
) -> cst.BaseExpression:
return updated_node
# Instantiating this class should not raise any errors
TestVisitor()
def test_valid_collector_visit_union(self) -> None:
class TestVisitor(MatcherDecoratableVisitor):
@visit(m.SimpleString() | m.Name())
def _string_visit(self, node: Union[cst.SimpleString, cst.Name]) -> None:
pass
# Instantiating this class should not raise any errors
TestVisitor()
def test_valid_transformer_visit_union(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@visit(m.SimpleString() | m.Name())
def _string_visit(self, node: Union[cst.SimpleString, cst.Name]) -> None:
pass
# Instantiating this class should not raise any errors
TestVisitor()
def test_valid_collector_visit_superclass(self) -> None:
class TestVisitor(MatcherDecoratableVisitor):
@visit(m.SimpleString() | m.Name())
def _string_visit(self, node: cst.BaseExpression) -> None:
pass
# Instantiating this class should not raise any errors
TestVisitor()
def test_valid_transformer_visit_superclass(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@visit(m.SimpleString() | m.Name())
def _string_visit(self, node: cst.BaseExpression) -> None:
pass
# Instantiating this class should not raise any errors
TestVisitor()
def test_valid_collector_leave_union(self) -> None:
class TestVisitor(MatcherDecoratableVisitor):
@leave(m.SimpleString() | m.Name())
def _string_leave(self, node: Union[cst.SimpleString, cst.Name]) -> None:
pass
# Instantiating this class should not raise any errors
TestVisitor()
def test_valid_transformer_leave_union(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@leave(m.SimpleString() | m.Name())
def _string_leave(
self,
original_node: Union[cst.SimpleString, cst.Name],
updated_node: Union[cst.SimpleString, cst.Name],
) -> Union[cst.SimpleString, cst.Name]:
return updated_node
# Instantiating this class should not raise any errors
TestVisitor()
def test_valid_collector_leave_superclass(self) -> None:
class TestVisitor(MatcherDecoratableVisitor):
@leave(m.SimpleString() | m.Name())
def _string_leave(self, node: cst.BaseExpression) -> None:
pass
# Instantiating this class should not raise any errors
TestVisitor()
def test_valid_transformer_leave_superclass(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@leave(m.SimpleString() | m.Name())
def _string_leave(
self,
original_node: cst.BaseExpression,
updated_node: cst.BaseExpression,
) -> cst.BaseExpression:
return updated_node
# Instantiating this class should not raise any errors
TestVisitor()
def test_valid_transformer_leave_return_maybe(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@leave(m.AssignEqual())
def _assign_equal_leave(
self, original_node: cst.AssignEqual, updated_node: cst.AssignEqual
) -> Union[cst.AssignEqual, cst.MaybeSentinel]:
return updated_node
# Instantiating this class should not raise any errors
TestVisitor()
def test_valid_transformer_leave_return_remove(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@leave(m.AssignTarget())
def _string_visit(
self, original_node: cst.AssignTarget, updated_node: cst.AssignTarget
) -> Union[cst.AssignTarget, cst.RemovalSentinel]:
return updated_node
# Instantiating this class should not raise any errors
TestVisitor()
def test_invalid_collector_visit_return(self) -> None:
class TestVisitor(MatcherDecoratableVisitor):
@visit(m.SimpleString())
def _string_visit(self, node: cst.SimpleString) -> bool:
return False
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@visit should only decorate functions that do not return",
):
TestVisitor()
def test_invalid_transformer_visit_return(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@visit(m.SimpleString())
def _string_visit(self, node: cst.SimpleString) -> bool:
return False
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@visit should only decorate functions that do not return",
):
TestVisitor()
def test_invalid_transformer_visit_num_params(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@visit(m.SimpleString())
def _string_visit(
self, original_node: cst.SimpleString, updated_node: cst.SimpleString
) -> None:
pass
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@visit should decorate functions which take 1 parameter",
):
TestVisitor()
def test_invalid_collector_visit_num_params(self) -> None:
class TestVisitor(MatcherDecoratableVisitor):
@visit(m.SimpleString())
def _string_visit(
self, original_node: cst.SimpleString, updated_node: cst.SimpleString
) -> None:
pass
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@visit should decorate functions which take 1 parameter",
):
TestVisitor()
def test_invalid_transformer_leave_num_params(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@leave(m.SimpleString())
def _string_leave(
self, original_node: cst.SimpleString
) -> cst.SimpleString:
return original_node
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@leave should decorate functions which take 2 parameters",
):
TestVisitor()
def test_invalid_collector_leave_num_params(self) -> None:
class TestVisitor(MatcherDecoratableVisitor):
@leave(m.SimpleString())
def _string_leave(
self, original_node: cst.SimpleString, updated_node: cst.SimpleString
) -> None:
pass
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@leave should decorate functions which take 1 parameter",
):
TestVisitor()
def test_invalid_collector_leave_return(self) -> None:
class TestVisitor(MatcherDecoratableVisitor):
@leave(m.SimpleString())
def _string_leave(self, original_node: cst.SimpleString) -> bool:
return False
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@leave should only decorate functions that do not return",
):
TestVisitor()
def test_invalid_transformer_leave_return_invalid_superclass(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@leave(m.SimpleString())
def _string_visit(
self, original_node: cst.SimpleString, updated_node: cst.SimpleString
) -> cst.BaseParenthesizableWhitespace:
return cst.SimpleWhitespace("")
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@leave decorated function cannot return the type BaseParenthesizableWhitespace",
):
TestVisitor()
def test_invalid_transformer_leave_return_wrong_type(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@leave(m.SimpleString())
def _string_visit(
self, original_node: cst.SimpleString, updated_node: cst.SimpleString
) -> cst.Pass:
return cst.Pass()
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@leave decorated function cannot return the type Pass",
):
TestVisitor()
def test_invalid_transformer_leave_return_invalid_maybe(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@leave(m.SimpleString())
def _string_visit(
self, original_node: cst.SimpleString, updated_node: cst.SimpleString
) -> Union[cst.SimpleString, cst.MaybeSentinel]:
return updated_node
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@leave decorated function cannot return the type MaybeSentinel",
):
TestVisitor()
def test_invalid_transformer_leave_return_invalid_remove(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@leave(m.SimpleString())
def _string_visit(
self, original_node: cst.SimpleString, updated_node: cst.SimpleString
) -> Union[cst.SimpleString, cst.RemovalSentinel]:
return updated_node
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@leave decorated function cannot return the type RemovalSentinel",
):
TestVisitor()
def test_invalid_transformer_leave_return_invalid_union(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@leave(m.SimpleString() | m.Name())
def _string_leave(
self,
original_node: Union[cst.SimpleString, cst.Name],
updated_node: Union[cst.SimpleString, cst.Name],
) -> Union[cst.SimpleString, cst.Pass]:
return cst.SimpleString('""')
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@leave decorated function cannot return the type Pass",
):
TestVisitor()
def test_invalid_collector_visit_union(self) -> None:
class TestVisitor(MatcherDecoratableVisitor):
@visit(m.SimpleString() | m.Name())
def _string_visit(self, node: cst.SimpleString) -> None:
pass
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@visit can be called with Name but the decorated function parameter annotations do not include this type",
):
TestVisitor()
def test_invalid_transformer_visit_union(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@visit(m.SimpleString() | m.Name())
def _string_visit(self, node: cst.SimpleString) -> None:
pass
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@visit can be called with Name but the decorated function parameter annotations do not include this type",
):
TestVisitor()
def test_invalid_collector_visit_superclass(self) -> None:
class TestVisitor(MatcherDecoratableVisitor):
@visit(m.SimpleString() | m.Pass())
def _string_visit(self, node: cst.BaseExpression) -> None:
pass
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@visit can be called with Pass but the decorated function parameter annotations do not include this type",
):
TestVisitor()
def test_invalid_transformer_visit_superclass(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@visit(m.SimpleString() | m.Pass())
def _string_visit(self, node: cst.BaseExpression) -> None:
pass
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@visit can be called with Pass but the decorated function parameter annotations do not include this type",
):
TestVisitor()
def test_invalid_collector_leave_union(self) -> None:
class TestVisitor(MatcherDecoratableVisitor):
@leave(m.SimpleString() | m.Name())
def _string_leave(self, node: cst.SimpleString) -> None:
pass
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@leave can be called with Name but the decorated function parameter annotations do not include this type",
):
TestVisitor()
def test_invalid_transformer_leave_union(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@leave(m.SimpleString() | m.Name())
def _string_leave(
self, original_node: cst.SimpleString, updated_node: cst.SimpleString
) -> cst.BaseExpression:
return updated_node
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@leave can be called with Name but the decorated function parameter annotations do not include this type",
):
TestVisitor()
def test_invalid_collector_leave_superclass(self) -> None:
class TestVisitor(MatcherDecoratableVisitor):
@leave(m.SimpleString() | m.Pass())
def _string_leave(self, node: cst.BaseExpression) -> None:
pass
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@leave can be called with Pass but the decorated function parameter annotations do not include this type",
):
TestVisitor()
def test_invalid_transformer_leave_superclass(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@leave(m.SimpleString() | m.Pass())
def _string_leave(
self,
original_node: cst.BaseExpression,
updated_node: cst.BaseExpression,
) -> cst.BaseExpression:
return updated_node
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@leave can be called with Pass but the decorated function parameter annotations do not include this type",
):
TestVisitor()
def test_bad_visit_collecter_decorator(self) -> None:
class TestVisitor(MatcherDecoratableVisitor):
@visit(m.SimpleString())
def visit_SimpleString(self, node: cst.SimpleString) -> None:
pass
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@visit should not decorate functions that are concrete visit or leave methods",
):
TestVisitor()
def test_bad_leave_collecter_decorator(self) -> None:
class TestVisitor(MatcherDecoratableVisitor):
@leave(m.SimpleString())
def leave_SimpleString(
self, original_node: cst.SimpleString, updated_node: cst.SimpleString
) -> None:
pass
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@leave should not decorate functions that are concrete visit or leave methods",
):
TestVisitor()
def test_bad_visit_transform_decorator(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@visit(m.SimpleString())
def visit_SimpleString(self, node: cst.SimpleString) -> None:
pass
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@visit should not decorate functions that are concrete visit or leave methods",
):
TestVisitor()
def test_bad_leave_transform_decorator(self) -> None:
class TestVisitor(MatcherDecoratableTransformer):
@leave(m.SimpleString())
def leave_SimpleString(
self, original_node: cst.SimpleString, updated_node: cst.SimpleString
) -> cst.SimpleString:
return updated_node
# Instantiating this class should raise a runtime error
with self.assertRaisesRegex(
MatchDecoratorMismatch,
"@leave should not decorate functions that are concrete visit or leave methods",
):
TestVisitor()
def test_pickleable_exception(self) -> None:
original = MatchDecoratorMismatch("func", "message")
serialized = pickle.dumps(original)
unserialized = pickle.loads(serialized)
self.assertEqual(original.message, unserialized.message)
self.assertEqual(original.func, unserialized.func)
|
