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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.add_pyre_directive import AddPyreUnsafeCommand
class TestAddPyreUnsafeCommand(CodemodTest):
TRANSFORM = AddPyreUnsafeCommand
def test_add_to_file(self) -> None:
before = """
def baz() -> List[Foo]:
pass
"""
after = """
# pyre-unsafe
def baz() -> List[Foo]:
pass
"""
self.assertCodemod(before, after)
def test_add_to_file_with_pyre_unsafe(self) -> None:
"""
We shouldn't be adding pyre-unsafe to a file that already has it.
"""
before = """
# pyre-unsafe
def baz() -> List[Foo]:
pass
"""
after = """
# pyre-unsafe
def baz() -> List[Foo]:
pass
"""
self.assertCodemod(before, after)
def test_add_to_file_with_pyre_unsafe_after(self) -> None:
"""
We shouldn't be adding pyre-unsafe to a file that already has it.
"""
before = """
# THIS IS A COMMENT!
# pyre-unsafe
def baz() -> List[Foo]:
pass
"""
after = """
# THIS IS A COMMENT!
# pyre-unsafe
def baz() -> List[Foo]:
pass
"""
self.assertCodemod(before, after)
def test_add_to_file_with_pyre_unsafe_before(self) -> None:
"""
We shouldn't be adding pyre-unsafe to a file that already has it.
"""
before = """
# pyre-unsafe
# THIS IS A COMMENT!
def baz() -> List[Foo]:
pass
"""
after = """
# pyre-unsafe
# THIS IS A COMMENT!
def baz() -> List[Foo]:
pass
"""
self.assertCodemod(before, after)
def test_empty_file(self) -> None:
"""
If a file is empty, we should still add it.
"""
before = ""
after = "# pyre-unsafe"
self.assertCodemod(before, after)
def test_add_to_file_with_comment(self) -> None:
"""
We should add pyre-unsafe after the last comment at the top of a file.
"""
before = """
# YO I'M A COMMENT
def baz() -> List[Foo]:
pass
"""
after = """
# YO I'M A COMMENT
# pyre-unsafe
def baz() -> List[Foo]:
pass
"""
self.assertCodemod(before, after)
def test_add_to_file_with_import(self) -> None:
"""
Tests that adding to a file with an import works properly.
"""
before = """
from typing import List
def baz() -> List[Foo]:
pass
"""
after = """
# pyre-unsafe
from typing import List
def baz() -> List[Foo]:
pass
"""
self.assertCodemod(before, after)
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