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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_module
from libcst.codemod import CodemodContext, CodemodTest
from libcst.codemod.visitors import GatherExportsVisitor
from libcst.testing.utils import UnitTest
class TestGatherExportsVisitor(UnitTest):
def gather_exports(self, code: str) -> GatherExportsVisitor:
transform_instance = GatherExportsVisitor(CodemodContext())
input_tree = parse_module(CodemodTest.make_fixture_data(code))
input_tree.visit(transform_instance)
return transform_instance
def test_gather_noop(self) -> None:
code = """
from foo import bar
from typing import List
bar(["foo", "bar"])
list_of_str = ["foo", "bar", "baz"]
set_of_str = {"foo", "bar", "baz"}
tuple_of_str = ("foo", "bar", "baz")
another: List[str] = ["foobar", "foobarbaz"]
"""
gatherer = self.gather_exports(code)
self.assertEqual(gatherer.explicit_exported_objects, set())
def test_gather_exports_simple(self) -> None:
code = """
from foo import bar
from biz import baz
__all__ = ["bar", "baz"]
"""
gatherer = self.gather_exports(code)
self.assertEqual(gatherer.explicit_exported_objects, {"bar", "baz"})
def test_gather_exports_simple2(self) -> None:
code = """
from foo import bar
from biz import baz
__all__ = ["bar"]
__all__ += ["baz"]
"""
gatherer = self.gather_exports(code)
self.assertEqual(gatherer.explicit_exported_objects, {"bar", "baz"})
def test_gather_exports_simple_set(self) -> None:
code = """
from foo import bar
from biz import baz
__all__ = {"bar", "baz"}
"""
gatherer = self.gather_exports(code)
self.assertEqual(gatherer.explicit_exported_objects, {"bar", "baz"})
def test_gather_exports_simple_tuple(self) -> None:
code = """
from foo import bar
from biz import baz
__all__ = ("bar", "baz")
"""
gatherer = self.gather_exports(code)
self.assertEqual(gatherer.explicit_exported_objects, {"bar", "baz"})
def test_gather_exports_simple_annotated(self) -> None:
code = """
from foo import bar
from biz import baz
from typing import List
__all__: List[str] = ["bar", "baz"]
"""
gatherer = self.gather_exports(code)
self.assertEqual(gatherer.explicit_exported_objects, {"bar", "baz"})
def test_gather_exports_ignore_invalid_1(self) -> None:
code = """
from foo import bar
from biz import baz
__all__ = [bar, baz]
"""
gatherer = self.gather_exports(code)
self.assertEqual(gatherer.explicit_exported_objects, set())
def test_gather_exports_ignore_invalid_2(self) -> None:
code = """
from foo import bar
from biz import baz
__all__ = ["bar", "baz", ["biz"]]
"""
gatherer = self.gather_exports(code)
self.assertEqual(gatherer.explicit_exported_objects, {"bar", "baz"})
def test_gather_exports_ignore_valid_1(self) -> None:
code = """
from foo import bar
from biz import baz
__all__ = ["bar", "b""a""z"]
"""
gatherer = self.gather_exports(code)
self.assertEqual(gatherer.explicit_exported_objects, {"bar", "baz"})
def test_gather_exports_ignore_valid_2(self) -> None:
code = """
from foo import bar
from biz import baz
__all__, _ = ["bar", "baz"], ["biz"]
"""
gatherer = self.gather_exports(code)
self.assertEqual(gatherer.explicit_exported_objects, {"bar", "baz"})
def test_gather_exports_ignore_valid_3(self) -> None:
code = """
from foo import bar
from biz import baz
__all__ = exported = ["bar", "baz"]
"""
gatherer = self.gather_exports(code)
self.assertEqual(gatherer.explicit_exported_objects, {"bar", "baz"})
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