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https://github.com/Instagram/LibCST.git
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9542fc3882
* rm: ci * rm: entry point * fix: tests * fix: remove combine step from ci * linter fixes * omit the _parser * fix newlines * fix: remove optional * fix: linter --------- Co-authored-by: thereversiblewheel <martin.li@uwaterloo.ca>
119 lines
4.1 KiB
Python
119 lines
4.1 KiB
Python
# Copyright (c) Meta Platforms, Inc. and affiliates.
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#
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# This source code is licensed under the MIT license found in the
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# LICENSE file in the root directory of this source tree.
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#
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import platform
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import subprocess
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import sys
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import tempfile
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from pathlib import Path
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from unittest import skipIf
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from libcst.codemod import CodemodTest
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from libcst.testing.utils import UnitTest
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class TestCodemodCLI(UnitTest):
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# pyre-ignore - no idea why pyre is complaining about this
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@skipIf(platform.system() == "Windows", "Windows")
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def test_codemod_formatter_error_input(self) -> None:
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rlt = subprocess.run(
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[
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sys.executable,
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"-m",
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"libcst.tool",
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"codemod",
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"remove_unused_imports.RemoveUnusedImportsCommand",
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# `ArgumentParser.parse_known_args()`'s behavior dictates that options
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# need to go after instead of before the codemod command identifier.
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"--python-version",
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"3.6",
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str(Path(__file__).parent / "codemod_formatter_error_input.py.txt"),
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],
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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)
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self.assertIn(
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"error: cannot format -: Cannot parse for target version Python 3.6: 13:10: async with AsyncExitStack() as stack:",
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rlt.stderr.decode("utf-8"),
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)
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def test_codemod_external(self) -> None:
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# Test running the NOOP command as an "external command"
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# against this very file.
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output = subprocess.check_output(
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[
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sys.executable,
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"-m",
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"libcst.tool",
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"codemod",
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"-x", # external module
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"libcst.codemod.commands.noop.NOOPCommand",
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str(Path(__file__)),
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],
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encoding="utf-8",
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stderr=subprocess.STDOUT,
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)
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assert "Finished codemodding 1 files!" in output
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def test_warning_messages_several_files(self) -> None:
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code = """
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def baz() -> str:
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return "{}: {}".format(*baz)
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"""
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with tempfile.TemporaryDirectory() as tmpdir:
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p = Path(tmpdir)
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(p / "mod1.py").write_text(CodemodTest.make_fixture_data(code))
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(p / "mod2.py").write_text(CodemodTest.make_fixture_data(code))
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(p / "mod3.py").write_text(CodemodTest.make_fixture_data(code))
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output = subprocess.run(
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[
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sys.executable,
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"-m",
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"libcst.tool",
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"codemod",
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"convert_format_to_fstring.ConvertFormatStringCommand",
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str(p),
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],
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encoding="utf-8",
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stderr=subprocess.PIPE,
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)
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# Each module will generate a warning, so we should get 3 warnings in total
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self.assertIn(
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"- 3 warnings were generated.",
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output.stderr,
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)
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def test_matcher_decorators_multiprocessing(self) -> None:
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file_count = 5
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code = """
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def baz(): # type: int
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return 5
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"""
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with tempfile.TemporaryDirectory() as tmpdir:
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p = Path(tmpdir)
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# Using more than chunksize=4 files to trigger multiprocessing
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for i in range(file_count):
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(p / f"mod{i}.py").write_text(CodemodTest.make_fixture_data(code))
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output = subprocess.run(
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[
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sys.executable,
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"-m",
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"libcst.tool",
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"codemod",
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# Good candidate since it uses matcher decorators
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"convert_type_comments.ConvertTypeComments",
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str(p),
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"--jobs",
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str(file_count),
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],
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encoding="utf-8",
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stderr=subprocess.PIPE,
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)
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self.assertIn(
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f"Transformed {file_count} files successfully.",
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output.stderr,
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)
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