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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.codemod import CodemodTest
from libcst.codemod.commands.ensure_import_present import EnsureImportPresentCommand
class EnsureImportPresentCommandTest(CodemodTest):
TRANSFORM = EnsureImportPresentCommand
def test_import_module(self) -> None:
before = ""
after = "import a"
self.assertCodemod(before, after, module="a", entity=None, alias=None)
def test_import_entity(self) -> None:
before = ""
after = "from a import b"
self.assertCodemod(before, after, module="a", entity="b", alias=None)
def test_import_wildcard(self) -> None:
before = "from a import *"
after = "from a import *"
self.assertCodemod(before, after, module="a", entity="b", alias=None)
def test_import_module_aliased(self) -> None:
before = ""
after = "import a as c"
self.assertCodemod(before, after, module="a", entity=None, alias="c")
def test_import_entity_aliased(self) -> None:
before = ""
after = "from a import b as c"
self.assertCodemod(before, after, module="a", entity="b", alias="c")
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