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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 typing import Type
from libcst.codemod import Codemod, CodemodTest
from libcst.codemod.commands.unnecessary_format_string import UnnecessaryFormatString
class TestUnnecessaryFormatString(CodemodTest):
TRANSFORM: Type[Codemod] = UnnecessaryFormatString
def test_replace(self) -> None:
before = r"""
good: str = "good"
good: str = f"with_arg{arg}"
good = "good{arg1}".format(1234)
good = "good".format()
good = "good" % {}
good = "good" % ()
good = rf"good\d+{bar}"
good = f"wow i don't have args but don't mess my braces {{ up }}"
bad: str = f"bad" + "bad"
bad: str = f'bad'
bad: str = rf'bad\d+'
"""
after = r"""
good: str = "good"
good: str = f"with_arg{arg}"
good = "good{arg1}".format(1234)
good = "good".format()
good = "good" % {}
good = "good" % ()
good = rf"good\d+{bar}"
good = f"wow i don't have args but don't mess my braces {{ up }}"
bad: str = "bad" + "bad"
bad: str = 'bad'
bad: str = r'bad\d+'
"""
self.assertCodemod(before, after)
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