X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/1e557184b0a9f43bfbff862669966bc5328517e9..e712e48e06420d9240ce95c81acfcf6f11d14c83:/tests/test_black.py diff --git a/tests/test_black.py b/tests/test_black.py index 02a707e..00de5b7 100644 --- a/tests/test_black.py +++ b/tests/test_black.py @@ -6,6 +6,7 @@ import io import logging import multiprocessing import os +import re import sys import types import unittest @@ -24,6 +25,7 @@ from typing import ( List, Optional, Sequence, + Type, TypeVar, Union, ) @@ -31,7 +33,6 @@ from unittest.mock import MagicMock, patch import click import pytest -import re from click import unstyle from click.testing import CliRunner from pathspec import PathSpec @@ -59,8 +60,8 @@ from tests.util import ( dump_to_stderr, ff, fs, - read_data, get_case_path, + read_data, read_data_from_file, ) @@ -153,6 +154,34 @@ class BlackTestCase(BlackBaseTestCase): os.unlink(tmp_file) self.assertFormatEqual(expected, actual) + @patch("black.dump_to_file", dump_to_stderr) + def test_one_empty_line(self) -> None: + mode = black.Mode(preview=True) + for nl in ["\n", "\r\n"]: + source = expected = nl + assert_format(source, expected, mode=mode) + + def test_one_empty_line_ff(self) -> None: + mode = black.Mode(preview=True) + for nl in ["\n", "\r\n"]: + expected = nl + tmp_file = Path(black.dump_to_file(nl)) + if system() == "Windows": + # Writing files in text mode automatically uses the system newline, + # but in this case we don't want this for testing reasons. See: + # https://github.com/psf/black/pull/3348 + with open(tmp_file, "wb") as f: + f.write(nl.encode("utf-8")) + try: + self.assertFalse( + ff(tmp_file, mode=mode, write_back=black.WriteBack.YES) + ) + with open(tmp_file, "rb") as f: + actual = f.read().decode("utf8") + finally: + os.unlink(tmp_file) + self.assertFormatEqual(expected, actual) + def test_experimental_string_processing_warns(self) -> None: self.assertWarns( black.mode.Deprecated, black.Mode, experimental_string_processing=True @@ -310,6 +339,26 @@ class BlackTestCase(BlackBaseTestCase): versions = black.detect_target_versions(root) self.assertIn(black.TargetVersion.PY38, versions) + def test_detect_debug_f_strings(self) -> None: + root = black.lib2to3_parse("""f"{x=}" """) + features = black.get_features_used(root) + self.assertIn(black.Feature.DEBUG_F_STRINGS, features) + versions = black.detect_target_versions(root) + self.assertIn(black.TargetVersion.PY38, versions) + + root = black.lib2to3_parse( + """f"{x}"\nf'{"="}'\nf'{(x:=5)}'\nf'{f(a="3=")}'\nf'{x:=10}'\n""" + ) + features = black.get_features_used(root) + self.assertNotIn(black.Feature.DEBUG_F_STRINGS, features) + + # We don't yet support feature version detection in nested f-strings + root = black.lib2to3_parse( + """f"heard a rumour that { f'{1+1=}' } ... seems like it could be true" """ + ) + features = black.get_features_used(root) + self.assertNotIn(black.Feature.DEBUG_F_STRINGS, features) + @patch("black.dump_to_file", dump_to_stderr) def test_string_quotes(self) -> None: source, expected = read_data("miscellaneous", "string_quotes") @@ -321,6 +370,30 @@ class BlackTestCase(BlackBaseTestCase): black.assert_equivalent(source, not_normalized) black.assert_stable(source, not_normalized, mode=mode) + def test_skip_source_first_line(self) -> None: + source, _ = read_data("miscellaneous", "invalid_header") + tmp_file = Path(black.dump_to_file(source)) + # Full source should fail (invalid syntax at header) + self.invokeBlack([str(tmp_file), "--diff", "--check"], exit_code=123) + # So, skipping the first line should work + result = BlackRunner().invoke( + black.main, [str(tmp_file), "-x", f"--config={EMPTY_CONFIG}"] + ) + self.assertEqual(result.exit_code, 0) + with open(tmp_file, encoding="utf8") as f: + actual = f.read() + self.assertFormatEqual(source, actual) + + def test_skip_source_first_line_when_mixing_newlines(self) -> None: + code_mixing_newlines = b"Header will be skipped\r\ni = [1,2,3]\nj = [1,2,3]\n" + expected = b"Header will be skipped\r\ni = [1, 2, 3]\nj = [1, 2, 3]\n" + with TemporaryDirectory() as workspace: + test_file = Path(workspace) / "skip_header.py" + test_file.write_bytes(code_mixing_newlines) + mode = replace(DEFAULT_MODE, skip_source_first_line=True) + ff(test_file, mode=mode, write_back=black.WriteBack.YES) + self.assertEqual(test_file.read_bytes(), expected) + def test_skip_magic_trailing_comma(self) -> None: source, _ = read_data("simple_cases", "expression") expected, _ = read_data( @@ -346,7 +419,8 @@ class BlackTestCase(BlackBaseTestCase): msg = ( "Expected diff isn't equal to the actual. If you made changes to" " expression.py and this is an anticipated difference, overwrite" - f" tests/data/expression_skip_magic_trailing_comma.diff with {dump}" + " tests/data/miscellaneous/expression_skip_magic_trailing_comma.diff" + f" with {dump}" ) self.assertEqual(expected, actual, msg) @@ -402,6 +476,53 @@ class BlackTestCase(BlackBaseTestCase): self.assertFormatEqual(contents_spc, fs(contents_spc)) self.assertFormatEqual(contents_spc, fs(contents_tab)) + def test_false_positive_symlink_output_issue_3384(self) -> None: + # Emulate the behavior when using the CLI (`black ./child --verbose`), which + # involves patching some `pathlib.Path` methods. In particular, `is_dir` is + # patched only on its first call: when checking if "./child" is a directory it + # should return True. The "./child" folder exists relative to the cwd when + # running from CLI, but fails when running the tests because cwd is different + project_root = Path(THIS_DIR / "data" / "nested_gitignore_tests") + working_directory = project_root / "root" + target_abspath = working_directory / "child" + target_contents = ( + src.relative_to(working_directory) for src in target_abspath.iterdir() + ) + + def mock_n_calls(responses: List[bool]) -> Callable[[], bool]: + def _mocked_calls() -> bool: + if responses: + return responses.pop(0) + return False + + return _mocked_calls + + with patch("pathlib.Path.iterdir", return_value=target_contents), patch( + "pathlib.Path.cwd", return_value=working_directory + ), patch("pathlib.Path.is_dir", side_effect=mock_n_calls([True])): + ctx = FakeContext() + ctx.obj["root"] = project_root + report = MagicMock(verbose=True) + black.get_sources( + ctx=ctx, + src=("./child",), + quiet=False, + verbose=True, + include=DEFAULT_INCLUDE, + exclude=None, + report=report, + extend_exclude=None, + force_exclude=None, + stdin_filename=None, + ) + assert not any( + mock_args[1].startswith("is a symbolic link that points outside") + for _, mock_args, _ in report.path_ignored.mock_calls + ), "A symbolic link was reported." + report.path_ignored.assert_called_once_with( + Path("child", "b.py"), "matches a .gitignore file content" + ) + def test_report_verbose(self) -> None: report = Report(verbose=True) out_lines = [] @@ -493,15 +614,15 @@ class BlackTestCase(BlackBaseTestCase): report.check = True self.assertEqual( unstyle(str(report)), - "2 files would be reformatted, 3 files would be left unchanged, 2 files" - " would fail to reformat.", + "2 files would be reformatted, 3 files would be left unchanged, 2" + " files would fail to reformat.", ) report.check = False report.diff = True self.assertEqual( unstyle(str(report)), - "2 files would be reformatted, 3 files would be left unchanged, 2 files" - " would fail to reformat.", + "2 files would be reformatted, 3 files would be left unchanged, 2" + " files would fail to reformat.", ) def test_report_quiet(self) -> None: @@ -587,15 +708,15 @@ class BlackTestCase(BlackBaseTestCase): report.check = True self.assertEqual( unstyle(str(report)), - "2 files would be reformatted, 3 files would be left unchanged, 2 files" - " would fail to reformat.", + "2 files would be reformatted, 3 files would be left unchanged, 2" + " files would fail to reformat.", ) report.check = False report.diff = True self.assertEqual( unstyle(str(report)), - "2 files would be reformatted, 3 files would be left unchanged, 2 files" - " would fail to reformat.", + "2 files would be reformatted, 3 files would be left unchanged, 2" + " files would fail to reformat.", ) def test_report_normal(self) -> None: @@ -684,15 +805,15 @@ class BlackTestCase(BlackBaseTestCase): report.check = True self.assertEqual( unstyle(str(report)), - "2 files would be reformatted, 3 files would be left unchanged, 2 files" - " would fail to reformat.", + "2 files would be reformatted, 3 files would be left unchanged, 2" + " files would fail to reformat.", ) report.check = False report.diff = True self.assertEqual( unstyle(str(report)), - "2 files would be reformatted, 3 files would be left unchanged, 2 files" - " would fail to reformat.", + "2 files would be reformatted, 3 files would be left unchanged, 2" + " files would fail to reformat.", ) def test_lib2to3_parse(self) -> None: @@ -885,8 +1006,8 @@ class BlackTestCase(BlackBaseTestCase): ) def test_format_file_contents(self) -> None: - empty = "" mode = DEFAULT_MODE + empty = "" with self.assertRaises(black.NothingChanged): black.format_file_contents(empty, mode=mode, fast=False) just_nl = "\n" @@ -904,6 +1025,17 @@ class BlackTestCase(BlackBaseTestCase): black.format_file_contents(invalid, mode=mode, fast=False) self.assertEqual(str(e.exception), "Cannot parse: 1:7: return if you can") + mode = black.Mode(preview=True) + just_crlf = "\r\n" + with self.assertRaises(black.NothingChanged): + black.format_file_contents(just_crlf, mode=mode, fast=False) + just_whitespace_nl = "\n\t\n \n\t \n \t\n\n" + actual = black.format_file_contents(just_whitespace_nl, mode=mode, fast=False) + self.assertEqual("\n", actual) + just_whitespace_crlf = "\r\n\t\r\n \r\n\t \r\n \t\r\n\r\n" + actual = black.format_file_contents(just_whitespace_crlf, mode=mode, fast=False) + self.assertEqual("\r\n", actual) + def test_endmarker(self) -> None: n = black.lib2to3_parse("\n") self.assertEqual(n.type, black.syms.file_input) @@ -1195,8 +1327,51 @@ class BlackTestCase(BlackBaseTestCase): report.done.assert_called_with(expected, black.Changed.YES) def test_reformat_one_with_stdin_empty(self) -> None: + cases = [ + ("", ""), + ("\n", "\n"), + ("\r\n", "\r\n"), + (" \t", ""), + (" \t\n\t ", "\n"), + (" \t\r\n\t ", "\r\n"), + ] + + def _new_wrapper( + output: io.StringIO, io_TextIOWrapper: Type[io.TextIOWrapper] + ) -> Callable[[Any, Any], io.TextIOWrapper]: + def get_output(*args: Any, **kwargs: Any) -> io.TextIOWrapper: + if args == (sys.stdout.buffer,): + # It's `format_stdin_to_stdout()` calling `io.TextIOWrapper()`, + # return our mock object. + return output + # It's something else (i.e. `decode_bytes()`) calling + # `io.TextIOWrapper()`, pass through to the original implementation. + # See discussion in https://github.com/psf/black/pull/2489 + return io_TextIOWrapper(*args, **kwargs) + + return get_output + + mode = black.Mode(preview=True) + for content, expected in cases: + output = io.StringIO() + io_TextIOWrapper = io.TextIOWrapper + + with patch("io.TextIOWrapper", _new_wrapper(output, io_TextIOWrapper)): + try: + black.format_stdin_to_stdout( + fast=True, + content=content, + write_back=black.WriteBack.YES, + mode=mode, + ) + except io.UnsupportedOperation: + pass # StringIO does not support detach + assert output.getvalue() == expected + + # An empty string is the only test case for `preview=False` output = io.StringIO() - with patch("io.TextIOWrapper", lambda *args, **kwargs: output): + io_TextIOWrapper = io.TextIOWrapper + with patch("io.TextIOWrapper", _new_wrapper(output, io_TextIOWrapper)): try: black.format_stdin_to_stdout( fast=True, @@ -1266,6 +1441,17 @@ class BlackTestCase(BlackBaseTestCase): if nl == "\n": self.assertNotIn(b"\r\n", output) + def test_normalize_line_endings(self) -> None: + with TemporaryDirectory() as workspace: + test_file = Path(workspace) / "test.py" + for data, expected in ( + (b"c\r\nc\n ", b"c\r\nc\r\n"), + (b"l\nl\r\n ", b"l\nl\n"), + ): + test_file.write_bytes(data) + ff(test_file, write_back=black.WriteBack.YES) + self.assertEqual(test_file.read_bytes(), expected) + def test_assert_equivalent_different_asts(self) -> None: with self.assertRaises(AssertionError): black.assert_equivalent("{}", "None") @@ -1332,6 +1518,72 @@ class BlackTestCase(BlackBaseTestCase): self.assertEqual(config["exclude"], r"\.pyi?$") self.assertEqual(config["include"], r"\.py?$") + def test_parse_pyproject_toml_project_metadata(self) -> None: + for test_toml, expected in [ + ("only_black_pyproject.toml", ["py310"]), + ("only_metadata_pyproject.toml", ["py37", "py38", "py39", "py310"]), + ("neither_pyproject.toml", None), + ("both_pyproject.toml", ["py310"]), + ]: + test_toml_file = THIS_DIR / "data" / "project_metadata" / test_toml + config = black.parse_pyproject_toml(str(test_toml_file)) + self.assertEqual(config.get("target_version"), expected) + + def test_infer_target_version(self) -> None: + for version, expected in [ + ("3.6", [TargetVersion.PY36]), + ("3.11.0rc1", [TargetVersion.PY311]), + (">=3.10", [TargetVersion.PY310, TargetVersion.PY311]), + (">=3.10.6", [TargetVersion.PY310, TargetVersion.PY311]), + ("<3.6", [TargetVersion.PY33, TargetVersion.PY34, TargetVersion.PY35]), + (">3.7,<3.10", [TargetVersion.PY38, TargetVersion.PY39]), + (">3.7,!=3.8,!=3.9", [TargetVersion.PY310, TargetVersion.PY311]), + ( + "> 3.9.4, != 3.10.3", + [TargetVersion.PY39, TargetVersion.PY310, TargetVersion.PY311], + ), + ( + "!=3.3,!=3.4", + [ + TargetVersion.PY35, + TargetVersion.PY36, + TargetVersion.PY37, + TargetVersion.PY38, + TargetVersion.PY39, + TargetVersion.PY310, + TargetVersion.PY311, + ], + ), + ( + "==3.*", + [ + TargetVersion.PY33, + TargetVersion.PY34, + TargetVersion.PY35, + TargetVersion.PY36, + TargetVersion.PY37, + TargetVersion.PY38, + TargetVersion.PY39, + TargetVersion.PY310, + TargetVersion.PY311, + ], + ), + ("==3.8.*", [TargetVersion.PY38]), + (None, None), + ("", None), + ("invalid", None), + ("==invalid", None), + (">3.9,!=invalid", None), + ("3", None), + ("3.2", None), + ("2.7.18", None), + ("==2.7", None), + (">3.10,<3.11", None), + ]: + test_toml = {"project": {"requires-python": version}} + result = black.files.infer_target_version(test_toml) + self.assertEqual(result, expected) + def test_read_pyproject_toml(self) -> None: test_toml_file = THIS_DIR / "test.toml" fake_ctx = FakeContext() @@ -1376,6 +1628,12 @@ class BlackTestCase(BlackBaseTestCase): (src_dir.resolve(), "pyproject.toml"), ) + with change_directory(test_dir): + self.assertEqual( + black.find_project_root(("-",), stdin_filename="../src/a.py"), + (src_dir.resolve(), "pyproject.toml"), + ) + @patch( "black.files.find_user_pyproject_toml", ) @@ -1461,7 +1719,6 @@ class BlackTestCase(BlackBaseTestCase): black.assert_stable(source, output, mode=DEFAULT_MODE) def test_bpo_2142_workaround(self) -> None: - # https://bugs.python.org/issue2142 source, _ = read_data("miscellaneous", "missing_final_newline") @@ -1738,7 +1995,9 @@ class TestCaching: src = (workspace / f"test{tag}.py").resolve() with src.open("w") as fobj: fobj.write("print('hello')") - with patch("black.Manager", wraps=multiprocessing.Manager) as mgr: + with patch( + "black.concurrency.Manager", wraps=multiprocessing.Manager + ) as mgr: cmd = ["--diff", str(workspace)] if color: cmd.append("--color") @@ -1785,7 +2044,7 @@ class TestCaching: str(cached): black.get_cache_info(cached), str(cached_but_changed): (0.0, 0), } - todo, done = black.filter_cached( + todo, done = black.cache.filter_cached( cache, {uncached, cached, cached_but_changed} ) assert todo == {uncached, cached_but_changed} @@ -1894,6 +2153,17 @@ class TestFileCollection: ctx.obj["root"] = base assert_collected_sources(src, expected, ctx=ctx, extend_exclude=r"/exclude/") + def test_gitignore_used_on_multiple_sources(self) -> None: + root = Path(DATA_DIR / "gitignore_used_on_multiple_sources") + expected = [ + root / "dir1" / "b.py", + root / "dir2" / "b.py", + ] + ctx = FakeContext() + ctx.obj["root"] = root + src = [root / "dir1", root / "dir2"] + assert_collected_sources(src, expected, ctx=ctx) + @patch("black.find_project_root", lambda *args: (THIS_DIR.resolve(), None)) def test_exclude_for_issue_1572(self) -> None: # Exclude shouldn't touch files that were explicitly given to Black through the @@ -1927,7 +2197,7 @@ class TestFileCollection: None, None, report, - gitignore, + {path: gitignore}, verbose=False, quiet=False, ) @@ -1956,13 +2226,20 @@ class TestFileCollection: None, None, report, - root_gitignore, + {path: root_gitignore}, verbose=False, quiet=False, ) ) assert sorted(expected) == sorted(sources) + def test_nested_gitignore_directly_in_source_directory(self) -> None: + # https://github.com/psf/black/issues/2598 + path = Path(DATA_DIR / "nested_gitignore_tests") + src = Path(path / "root" / "child") + expected = [src / "a.py", src / "c.py"] + assert_collected_sources([src], expected) + def test_invalid_gitignore(self) -> None: path = THIS_DIR / "data" / "invalid_gitignore_tests" empty_config = path / "pyproject.toml" @@ -1987,6 +2264,32 @@ class TestFileCollection: gitignore = path / "a" / ".gitignore" assert f"Could not parse {gitignore}" in result.stderr_bytes.decode() + def test_gitignore_that_ignores_subfolders(self) -> None: + # If gitignore with */* is in root + root = Path(DATA_DIR / "ignore_subfolders_gitignore_tests" / "subdir") + expected = [root / "b.py"] + ctx = FakeContext() + ctx.obj["root"] = root + assert_collected_sources([root], expected, ctx=ctx) + + # If .gitignore with */* is nested + root = Path(DATA_DIR / "ignore_subfolders_gitignore_tests") + expected = [ + root / "a.py", + root / "subdir" / "b.py", + ] + ctx = FakeContext() + ctx.obj["root"] = root + assert_collected_sources([root], expected, ctx=ctx) + + # If command is executed from outer dir + root = Path(DATA_DIR / "ignore_subfolders_gitignore_tests") + target = root / "subdir" + expected = [target / "b.py"] + ctx = FakeContext() + ctx.obj["root"] = root + assert_collected_sources([target], expected, ctx=ctx) + def test_empty_include(self) -> None: path = DATA_DIR / "include_exclude_tests" src = [path] @@ -2041,7 +2344,7 @@ class TestFileCollection: None, None, report, - gitignore, + {path: gitignore}, verbose=False, quiet=False, )