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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.
#
from libcst import parse_expression, parse_statement
from libcst.helpers.matchers import node_to_matcher
from libcst.matchers import matches
from libcst.testing.utils import data_provider, UnitTest
class MatchersTest(UnitTest):
@data_provider(
(
('"some string"',),
("call(some, **kwargs)",),
("a[b.c]",),
("[1 for _ in range(99) if False]",),
)
)
def test_reflexive_expressions(self, code: str) -> None:
node = parse_expression(code)
matcher = node_to_matcher(node)
self.assertTrue(matches(node, matcher))
@data_provider(
(
("def foo(a) -> None: pass",),
("class F: ...",),
("foo: bar",),
)
)
def test_reflexive_statements(self, code: str) -> None:
node = parse_statement(code)
matcher = node_to_matcher(node)
self.assertTrue(matches(node, matcher))
def test_whitespace(self) -> None:
code_ws = parse_expression("(foo , bar )")
code = parse_expression("(foo,bar)")
self.assertTrue(
matches(
code,
node_to_matcher(code_ws),
)
)
self.assertFalse(
matches(
code,
node_to_matcher(code_ws, match_syntactic_trivia=True),
)
)
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