#!/usr/bin/env python3
-import multiprocessing
+
import asyncio
+import inspect
+import io
import logging
+import multiprocessing
+import os
+import sys
+import types
+import unittest
from concurrent.futures import ThreadPoolExecutor
from contextlib import contextmanager
from dataclasses import replace
-import inspect
-from io import BytesIO, TextIOWrapper
-import os
+from io import BytesIO
from pathlib import Path
from platform import system
-import regex as re
-import sys
from tempfile import TemporaryDirectory
-import types
from typing import (
Any,
- BinaryIO,
Callable,
Dict,
- Generator,
- List,
Iterator,
+ List,
+ Optional,
+ Sequence,
TypeVar,
+ Union,
)
-import unittest
-from unittest.mock import patch, MagicMock
+from unittest.mock import MagicMock, patch
import click
+import pytest
+import regex as re
from click import unstyle
from click.testing import CliRunner
+from pathspec import PathSpec
import black
+import black.files
from black import Feature, TargetVersion
-
-from pathspec import PathSpec
+from black import re_compile_maybe_verbose as compile_pattern
+from black.cache import get_cache_file
+from black.debug import DebugVisitor
+from black.output import color_diff, diff
+from black.report import Report
# Import other test classes
from tests.util import (
- THIS_DIR,
- read_data,
+ DATA_DIR,
+ DEFAULT_MODE,
DETERMINISTIC_HEADER,
+ PROJECT_ROOT,
+ PY36_VERSIONS,
+ THIS_DIR,
BlackBaseTestCase,
- DEFAULT_MODE,
- fs,
- ff,
+ assert_format,
+ change_directory,
dump_to_stderr,
+ ff,
+ fs,
+ read_data,
)
-from .test_primer import PrimerCLITests # noqa: F401
-
THIS_FILE = Path(__file__)
-PY36_VERSIONS = {
- TargetVersion.PY36,
- TargetVersion.PY37,
- TargetVersion.PY38,
- TargetVersion.PY39,
-}
PY36_ARGS = [f"--target-version={version.name.lower()}" for version in PY36_VERSIONS]
+DEFAULT_EXCLUDE = black.re_compile_maybe_verbose(black.const.DEFAULT_EXCLUDES)
+DEFAULT_INCLUDE = black.re_compile_maybe_verbose(black.const.DEFAULT_INCLUDES)
T = TypeVar("T")
R = TypeVar("R")
+# Match the time output in a diff, but nothing else
+DIFF_TIME = re.compile(r"\t[\d-:+\. ]+")
+
@contextmanager
def cache_dir(exists: bool = True) -> Iterator[Path]:
cache_dir = Path(workspace)
if not exists:
cache_dir = cache_dir / "new"
- with patch("black.CACHE_DIR", cache_dir):
+ with patch("black.cache.CACHE_DIR", cache_dir):
yield cache_dir
class BlackRunner(CliRunner):
- """Modify CliRunner so that stderr is not merged with stdout.
-
- This is a hack that can be removed once we depend on Click 7.x"""
+ """Make sure STDOUT and STDERR are kept separate when testing Black via its CLI."""
def __init__(self) -> None:
- self.stderrbuf = BytesIO()
- self.stdoutbuf = BytesIO()
- self.stdout_bytes = b""
- self.stderr_bytes = b""
- super().__init__()
-
- @contextmanager
- def isolation(self, *args: Any, **kwargs: Any) -> Generator[BinaryIO, None, None]:
- with super().isolation(*args, **kwargs) as output:
- try:
- hold_stderr = sys.stderr
- sys.stderr = TextIOWrapper(self.stderrbuf, encoding=self.charset)
- yield output
- finally:
- self.stdout_bytes = sys.stdout.buffer.getvalue() # type: ignore
- self.stderr_bytes = sys.stderr.buffer.getvalue() # type: ignore
- sys.stderr = hold_stderr
+ super().__init__(mix_stderr=False)
+
+
+def invokeBlack(
+ args: List[str], exit_code: int = 0, ignore_config: bool = True
+) -> None:
+ runner = BlackRunner()
+ if ignore_config:
+ args = ["--verbose", "--config", str(THIS_DIR / "empty.toml"), *args]
+ result = runner.invoke(black.main, args)
+ assert result.stdout_bytes is not None
+ assert result.stderr_bytes is not None
+ msg = (
+ f"Failed with args: {args}\n"
+ f"stdout: {result.stdout_bytes.decode()!r}\n"
+ f"stderr: {result.stderr_bytes.decode()!r}\n"
+ f"exception: {result.exception}"
+ )
+ assert result.exit_code == exit_code, msg
class BlackTestCase(BlackBaseTestCase):
- def invokeBlack(
- self, args: List[str], exit_code: int = 0, ignore_config: bool = True
- ) -> None:
- runner = BlackRunner()
- if ignore_config:
- args = ["--verbose", "--config", str(THIS_DIR / "empty.toml"), *args]
- result = runner.invoke(black.main, args)
- self.assertEqual(
- result.exit_code,
- exit_code,
- msg=(
- f"Failed with args: {args}\n"
- f"stdout: {runner.stdout_bytes.decode()!r}\n"
- f"stderr: {runner.stderr_bytes.decode()!r}\n"
- f"exception: {result.exception}"
- ),
- )
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_empty(self) -> None:
- source = expected = ""
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, DEFAULT_MODE)
+ invokeBlack = staticmethod(invokeBlack)
def test_empty_ff(self) -> None:
expected = ""
)
self.assertEqual(result.exit_code, 0)
self.assertFormatEqual(expected, result.output)
- black.assert_equivalent(source, result.output)
- black.assert_stable(source, result.output, DEFAULT_MODE)
+ if source != result.output:
+ black.assert_equivalent(source, result.output)
+ black.assert_stable(source, result.output, DEFAULT_MODE)
def test_piping_diff(self) -> None:
diff_header = re.compile(
black.assert_stable(source, actual, DEFAULT_MODE)
@patch("black.dump_to_file", dump_to_stderr)
- def test_pep_572(self) -> None:
- source, expected = read_data("pep_572")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
+ def test_trailing_comma_optional_parens_stability1_pass2(self) -> None:
+ source, _expected = read_data("trailing_comma_optional_parens1")
+ actual = fs(fs(source)) # this is what `format_file_contents` does with --safe
black.assert_stable(source, actual, DEFAULT_MODE)
- if sys.version_info >= (3, 8):
- black.assert_equivalent(source, actual)
@patch("black.dump_to_file", dump_to_stderr)
- def test_pep_572_remove_parens(self) -> None:
- source, expected = read_data("pep_572_remove_parens")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
+ def test_trailing_comma_optional_parens_stability2_pass2(self) -> None:
+ source, _expected = read_data("trailing_comma_optional_parens2")
+ actual = fs(fs(source)) # this is what `format_file_contents` does with --safe
+ black.assert_stable(source, actual, DEFAULT_MODE)
+
+ @patch("black.dump_to_file", dump_to_stderr)
+ def test_trailing_comma_optional_parens_stability3_pass2(self) -> None:
+ source, _expected = read_data("trailing_comma_optional_parens3")
+ actual = fs(fs(source)) # this is what `format_file_contents` does with --safe
black.assert_stable(source, actual, DEFAULT_MODE)
- if sys.version_info >= (3, 8):
- black.assert_equivalent(source, actual)
def test_pep_572_version_detection(self) -> None:
source, _ = read_data("pep_572")
self.assertIn("\033[31m", actual)
self.assertIn("\033[0m", actual)
- @patch("black.dump_to_file", dump_to_stderr)
- def test_pep_570(self) -> None:
- source, expected = read_data("pep_570")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_stable(source, actual, DEFAULT_MODE)
- if sys.version_info >= (3, 8):
- black.assert_equivalent(source, actual)
-
def test_detect_pos_only_arguments(self) -> None:
source, _ = read_data("pep_570")
root = black.lib2to3_parse(source)
@patch("black.dump_to_file", dump_to_stderr)
def test_string_quotes(self) -> None:
source, expected = read_data("string_quotes")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, DEFAULT_MODE)
- mode = replace(DEFAULT_MODE, string_normalization=False)
+ mode = black.Mode(experimental_string_processing=True)
+ assert_format(source, expected, mode)
+ mode = replace(mode, string_normalization=False)
not_normalized = fs(source, mode=mode)
self.assertFormatEqual(source.replace("\\\n", ""), not_normalized)
black.assert_equivalent(source, not_normalized)
black.assert_stable(source, not_normalized, mode=mode)
- @patch("black.dump_to_file", dump_to_stderr)
- def test_docstring_no_string_normalization(self) -> None:
- """Like test_docstring but with string normalization off."""
- source, expected = read_data("docstring_no_string_normalization")
- mode = replace(DEFAULT_MODE, string_normalization=False)
- actual = fs(source, mode=mode)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, mode)
-
- def test_long_strings_flag_disabled(self) -> None:
- """Tests for turning off the string processing logic."""
- source, expected = read_data("long_strings_flag_disabled")
- mode = replace(DEFAULT_MODE, experimental_string_processing=False)
- actual = fs(source, mode=mode)
- self.assertFormatEqual(expected, actual)
- black.assert_stable(expected, actual, mode)
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_numeric_literals(self) -> None:
- source, expected = read_data("numeric_literals")
- mode = replace(DEFAULT_MODE, target_versions=PY36_VERSIONS)
- actual = fs(source, mode=mode)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, mode)
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_numeric_literals_ignoring_underscores(self) -> None:
- source, expected = read_data("numeric_literals_skip_underscores")
- mode = replace(DEFAULT_MODE, target_versions=PY36_VERSIONS)
- actual = fs(source, mode=mode)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, mode)
-
def test_skip_magic_trailing_comma(self) -> None:
source, _ = read_data("expression.py")
expected, _ = read_data("expression_skip_magic_trailing_comma.diff")
)
self.assertEqual(expected, actual, msg)
- @patch("black.dump_to_file", dump_to_stderr)
- def test_python2_print_function(self) -> None:
- source, expected = read_data("python2_print_function")
- mode = replace(DEFAULT_MODE, target_versions={TargetVersion.PY27})
- actual = fs(source, mode=mode)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, mode)
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_stub(self) -> None:
- mode = replace(DEFAULT_MODE, is_pyi=True)
- source, expected = read_data("stub.pyi")
- actual = fs(source, mode=mode)
- self.assertFormatEqual(expected, actual)
- black.assert_stable(source, actual, mode)
-
@patch("black.dump_to_file", dump_to_stderr)
def test_async_as_identifier(self) -> None:
source_path = (THIS_DIR / "data" / "async_as_identifier.py").resolve()
# but not on 3.6, because we use async as a reserved keyword
self.invokeBlack([str(source_path), "--target-version", "py36"], exit_code=123)
- @patch("black.dump_to_file", dump_to_stderr)
- def test_python38(self) -> None:
- source, expected = read_data("python38")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- major, minor = sys.version_info[:2]
- if major > 3 or (major == 3 and minor >= 8):
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, DEFAULT_MODE)
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_python39(self) -> None:
- source, expected = read_data("python39")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- major, minor = sys.version_info[:2]
- if major > 3 or (major == 3 and minor >= 9):
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, DEFAULT_MODE)
-
def test_tab_comment_indentation(self) -> None:
contents_tab = "if 1:\n\tif 2:\n\t\tpass\n\t# comment\n\tpass\n"
contents_spc = "if 1:\n if 2:\n pass\n # comment\n pass\n"
self.assertFormatEqual(contents_spc, fs(contents_tab))
def test_report_verbose(self) -> None:
- report = black.Report(verbose=True)
+ report = Report(verbose=True)
out_lines = []
err_lines = []
def err(msg: str, **kwargs: Any) -> None:
err_lines.append(msg)
- with patch("black.out", out), patch("black.err", err):
+ with patch("black.output._out", out), patch("black.output._err", err):
report.done(Path("f1"), black.Changed.NO)
self.assertEqual(len(out_lines), 1)
self.assertEqual(len(err_lines), 0)
)
def test_report_quiet(self) -> None:
- report = black.Report(quiet=True)
+ report = Report(quiet=True)
out_lines = []
err_lines = []
def err(msg: str, **kwargs: Any) -> None:
err_lines.append(msg)
- with patch("black.out", out), patch("black.err", err):
+ with patch("black.output._out", out), patch("black.output._err", err):
report.done(Path("f1"), black.Changed.NO)
self.assertEqual(len(out_lines), 0)
self.assertEqual(len(err_lines), 0)
def err(msg: str, **kwargs: Any) -> None:
err_lines.append(msg)
- with patch("black.out", out), patch("black.err", err):
+ with patch("black.output._out", out), patch("black.output._err", err):
report.done(Path("f1"), black.Changed.NO)
self.assertEqual(len(out_lines), 0)
self.assertEqual(len(err_lines), 0)
self.assertEqual(black.get_features_used(node), set())
node = black.lib2to3_parse(expected)
self.assertEqual(black.get_features_used(node), set())
+ node = black.lib2to3_parse("lambda a, /, b: ...")
+ self.assertEqual(black.get_features_used(node), {Feature.POS_ONLY_ARGUMENTS})
+ node = black.lib2to3_parse("def fn(a, /, b): ...")
+ self.assertEqual(black.get_features_used(node), {Feature.POS_ONLY_ARGUMENTS})
def test_get_future_imports(self) -> None:
node = black.lib2to3_parse("\n")
def err(msg: str, **kwargs: Any) -> None:
err_lines.append(msg)
- with patch("black.out", out), patch("black.err", err):
- black.DebugVisitor.show(source)
+ with patch("black.debug.out", out):
+ DebugVisitor.show(source)
actual = "\n".join(out_lines) + "\n"
log_name = ""
if expected != actual:
def err(msg: str, **kwargs: Any) -> None:
err_lines.append(msg)
- with patch("black.out", out), patch("black.err", err):
+ with patch("black.output._out", out), patch("black.output._err", err):
with self.assertRaises(AssertionError):
self.assertFormatEqual("j = [1, 2, 3]", "j = [1, 2, 3,]")
self.assertTrue("Actual tree:" in out_str)
self.assertEqual("".join(err_lines), "")
- def test_cache_broken_file(self) -> None:
- mode = DEFAULT_MODE
- with cache_dir() as workspace:
- cache_file = black.get_cache_file(mode)
- with cache_file.open("w") as fobj:
- fobj.write("this is not a pickle")
- self.assertEqual(black.read_cache(mode), {})
- src = (workspace / "test.py").resolve()
- with src.open("w") as fobj:
- fobj.write("print('hello')")
- self.invokeBlack([str(src)])
- cache = black.read_cache(mode)
- self.assertIn(str(src), cache)
-
- def test_cache_single_file_already_cached(self) -> None:
- mode = DEFAULT_MODE
- with cache_dir() as workspace:
- src = (workspace / "test.py").resolve()
- with src.open("w") as fobj:
- fobj.write("print('hello')")
- black.write_cache({}, [src], mode)
- self.invokeBlack([str(src)])
- with src.open("r") as fobj:
- self.assertEqual(fobj.read(), "print('hello')")
-
- @event_loop()
- def test_cache_multiple_files(self) -> None:
- mode = DEFAULT_MODE
- with cache_dir() as workspace, patch(
- "black.ProcessPoolExecutor", new=ThreadPoolExecutor
- ):
- one = (workspace / "one.py").resolve()
- with one.open("w") as fobj:
- fobj.write("print('hello')")
- two = (workspace / "two.py").resolve()
- with two.open("w") as fobj:
- fobj.write("print('hello')")
- black.write_cache({}, [one], mode)
- self.invokeBlack([str(workspace)])
- with one.open("r") as fobj:
- self.assertEqual(fobj.read(), "print('hello')")
- with two.open("r") as fobj:
- self.assertEqual(fobj.read(), 'print("hello")\n')
- cache = black.read_cache(mode)
- self.assertIn(str(one), cache)
- self.assertIn(str(two), cache)
-
- def test_no_cache_when_writeback_diff(self) -> None:
- mode = DEFAULT_MODE
- with cache_dir() as workspace:
- src = (workspace / "test.py").resolve()
- with src.open("w") as fobj:
- fobj.write("print('hello')")
- with patch("black.read_cache") as read_cache, patch(
- "black.write_cache"
- ) as write_cache:
- self.invokeBlack([str(src), "--diff"])
- cache_file = black.get_cache_file(mode)
- self.assertFalse(cache_file.exists())
- write_cache.assert_not_called()
- read_cache.assert_not_called()
-
- def test_no_cache_when_writeback_color_diff(self) -> None:
- mode = DEFAULT_MODE
- with cache_dir() as workspace:
- src = (workspace / "test.py").resolve()
- with src.open("w") as fobj:
- fobj.write("print('hello')")
- with patch("black.read_cache") as read_cache, patch(
- "black.write_cache"
- ) as write_cache:
- self.invokeBlack([str(src), "--diff", "--color"])
- cache_file = black.get_cache_file(mode)
- self.assertFalse(cache_file.exists())
- write_cache.assert_not_called()
- read_cache.assert_not_called()
-
- @event_loop()
- def test_output_locking_when_writeback_diff(self) -> None:
- with cache_dir() as workspace:
- for tag in range(0, 4):
- 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:
- self.invokeBlack(["--diff", str(workspace)], exit_code=0)
- # this isn't quite doing what we want, but if it _isn't_
- # called then we cannot be using the lock it provides
- mgr.assert_called()
-
- @event_loop()
- def test_output_locking_when_writeback_color_diff(self) -> None:
- with cache_dir() as workspace:
- for tag in range(0, 4):
- 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:
- self.invokeBlack(["--diff", "--color", str(workspace)], exit_code=0)
- # this isn't quite doing what we want, but if it _isn't_
- # called then we cannot be using the lock it provides
- mgr.assert_called()
-
- def test_no_cache_when_stdin(self) -> None:
- mode = DEFAULT_MODE
- with cache_dir():
- result = CliRunner().invoke(
- black.main, ["-"], input=BytesIO(b"print('hello')")
- )
- self.assertEqual(result.exit_code, 0)
- cache_file = black.get_cache_file(mode)
- self.assertFalse(cache_file.exists())
-
- def test_read_cache_no_cachefile(self) -> None:
- mode = DEFAULT_MODE
- with cache_dir():
- self.assertEqual(black.read_cache(mode), {})
-
- def test_write_cache_read_cache(self) -> None:
- mode = DEFAULT_MODE
- with cache_dir() as workspace:
- src = (workspace / "test.py").resolve()
- src.touch()
- black.write_cache({}, [src], mode)
- cache = black.read_cache(mode)
- self.assertIn(str(src), cache)
- self.assertEqual(cache[str(src)], black.get_cache_info(src))
-
- def test_filter_cached(self) -> None:
- with TemporaryDirectory() as workspace:
- path = Path(workspace)
- uncached = (path / "uncached").resolve()
- cached = (path / "cached").resolve()
- cached_but_changed = (path / "changed").resolve()
- uncached.touch()
- cached.touch()
- cached_but_changed.touch()
- cache = {
- str(cached): black.get_cache_info(cached),
- str(cached_but_changed): (0.0, 0),
- }
- todo, done = black.filter_cached(
- cache, {uncached, cached, cached_but_changed}
- )
- self.assertEqual(todo, {uncached, cached_but_changed})
- self.assertEqual(done, {cached})
-
- def test_write_cache_creates_directory_if_needed(self) -> None:
- mode = DEFAULT_MODE
- with cache_dir(exists=False) as workspace:
- self.assertFalse(workspace.exists())
- black.write_cache({}, [], mode)
- self.assertTrue(workspace.exists())
-
- @event_loop()
- def test_failed_formatting_does_not_get_cached(self) -> None:
- mode = DEFAULT_MODE
- with cache_dir() as workspace, patch(
- "black.ProcessPoolExecutor", new=ThreadPoolExecutor
- ):
- failing = (workspace / "failing.py").resolve()
- with failing.open("w") as fobj:
- fobj.write("not actually python")
- clean = (workspace / "clean.py").resolve()
- with clean.open("w") as fobj:
- fobj.write('print("hello")\n')
- self.invokeBlack([str(workspace)], exit_code=123)
- cache = black.read_cache(mode)
- self.assertNotIn(str(failing), cache)
- self.assertIn(str(clean), cache)
-
- def test_write_cache_write_fail(self) -> None:
- mode = DEFAULT_MODE
- with cache_dir(), patch.object(Path, "open") as mock:
- mock.side_effect = OSError
- black.write_cache({}, [], mode)
-
@event_loop()
@patch("black.ProcessPoolExecutor", MagicMock(side_effect=OSError))
def test_works_in_mono_process_only_environment(self) -> None:
self.skipTest(f"Can't create symlinks: {e}")
self.invokeBlack([str(workspace.resolve())])
- def test_read_cache_line_lengths(self) -> None:
- mode = DEFAULT_MODE
- short_mode = replace(DEFAULT_MODE, line_length=1)
- with cache_dir() as workspace:
- path = (workspace / "file.py").resolve()
- path.touch()
- black.write_cache({}, [path], mode)
- one = black.read_cache(mode)
- self.assertIn(str(path), one)
- two = black.read_cache(short_mode)
- self.assertNotIn(str(path), two)
-
def test_single_file_force_pyi(self) -> None:
pyi_mode = replace(DEFAULT_MODE, is_pyi=True)
contents, expected = read_data("force_pyi")
actual = result.output
self.assertFormatEqual(actual, expected)
- def test_include_exclude(self) -> None:
- path = THIS_DIR / "data" / "include_exclude_tests"
- include = re.compile(r"\.pyi?$")
- exclude = re.compile(r"/exclude/|/\.definitely_exclude/")
- report = black.Report()
- gitignore = PathSpec.from_lines("gitwildmatch", [])
- sources: List[Path] = []
- expected = [
- Path(path / "b/dont_exclude/a.py"),
- Path(path / "b/dont_exclude/a.pyi"),
- ]
- this_abs = THIS_DIR.resolve()
- sources.extend(
- black.gen_python_files(
- path.iterdir(),
- this_abs,
- include,
- exclude,
- None,
- None,
- report,
- gitignore,
- )
- )
- self.assertEqual(sorted(expected), sorted(sources))
-
- @patch("black.find_project_root", lambda *args: THIS_DIR.resolve())
- def test_exclude_for_issue_1572(self) -> None:
- # Exclude shouldn't touch files that were explicitly given to Black through the
- # CLI. Exclude is supposed to only apply to the recursive discovery of files.
- # https://github.com/psf/black/issues/1572
- path = THIS_DIR / "data" / "include_exclude_tests"
- include = ""
- exclude = r"/exclude/|a\.py"
- src = str(path / "b/exclude/a.py")
- report = black.Report()
- expected = [Path(path / "b/exclude/a.py")]
- sources = list(
- black.get_sources(
- ctx=FakeContext(),
- src=(src,),
- quiet=True,
- verbose=False,
- include=re.compile(include),
- exclude=re.compile(exclude),
- extend_exclude=None,
- force_exclude=None,
- report=report,
- stdin_filename=None,
- )
- )
- self.assertEqual(sorted(expected), sorted(sources))
-
- @patch("black.find_project_root", lambda *args: THIS_DIR.resolve())
- def test_get_sources_with_stdin(self) -> None:
- include = ""
- exclude = r"/exclude/|a\.py"
- src = "-"
- report = black.Report()
- expected = [Path("-")]
- sources = list(
- black.get_sources(
- ctx=FakeContext(),
- src=(src,),
- quiet=True,
- verbose=False,
- include=re.compile(include),
- exclude=re.compile(exclude),
- extend_exclude=None,
- force_exclude=None,
- report=report,
- stdin_filename=None,
- )
- )
- self.assertEqual(sorted(expected), sorted(sources))
-
- @patch("black.find_project_root", lambda *args: THIS_DIR.resolve())
- def test_get_sources_with_stdin_filename(self) -> None:
- include = ""
- exclude = r"/exclude/|a\.py"
- src = "-"
- report = black.Report()
- stdin_filename = str(THIS_DIR / "data/collections.py")
- expected = [Path(f"__BLACK_STDIN_FILENAME__{stdin_filename}")]
- sources = list(
- black.get_sources(
- ctx=FakeContext(),
- src=(src,),
- quiet=True,
- verbose=False,
- include=re.compile(include),
- exclude=re.compile(exclude),
- extend_exclude=None,
- force_exclude=None,
- report=report,
- stdin_filename=stdin_filename,
- )
- )
- self.assertEqual(sorted(expected), sorted(sources))
-
- @patch("black.find_project_root", lambda *args: THIS_DIR.resolve())
- def test_get_sources_with_stdin_filename_and_exclude(self) -> None:
- # Exclude shouldn't exclude stdin_filename since it is mimicing the
- # file being passed directly. This is the same as
- # test_exclude_for_issue_1572
- path = THIS_DIR / "data" / "include_exclude_tests"
- include = ""
- exclude = r"/exclude/|a\.py"
- src = "-"
- report = black.Report()
- stdin_filename = str(path / "b/exclude/a.py")
- expected = [Path(f"__BLACK_STDIN_FILENAME__{stdin_filename}")]
- sources = list(
- black.get_sources(
- ctx=FakeContext(),
- src=(src,),
- quiet=True,
- verbose=False,
- include=re.compile(include),
- exclude=re.compile(exclude),
- extend_exclude=None,
- force_exclude=None,
+ def test_reformat_one_with_stdin(self) -> None:
+ with patch(
+ "black.format_stdin_to_stdout",
+ return_value=lambda *args, **kwargs: black.Changed.YES,
+ ) as fsts:
+ report = MagicMock()
+ path = Path("-")
+ black.reformat_one(
+ path,
+ fast=True,
+ write_back=black.WriteBack.YES,
+ mode=DEFAULT_MODE,
report=report,
- stdin_filename=stdin_filename,
)
- )
- self.assertEqual(sorted(expected), sorted(sources))
+ fsts.assert_called_once()
+ report.done.assert_called_with(path, black.Changed.YES)
- @patch("black.find_project_root", lambda *args: THIS_DIR.resolve())
- def test_get_sources_with_stdin_filename_and_extend_exclude(self) -> None:
- # Extend exclude shouldn't exclude stdin_filename since it is mimicking the
- # file being passed directly. This is the same as
- # test_exclude_for_issue_1572
- path = THIS_DIR / "data" / "include_exclude_tests"
- include = ""
- extend_exclude = r"/exclude/|a\.py"
- src = "-"
- report = black.Report()
- stdin_filename = str(path / "b/exclude/a.py")
- expected = [Path(f"__BLACK_STDIN_FILENAME__{stdin_filename}")]
- sources = list(
- black.get_sources(
- ctx=FakeContext(),
- src=(src,),
- quiet=True,
- verbose=False,
- include=re.compile(include),
- exclude=re.compile(""),
- extend_exclude=re.compile(extend_exclude),
- force_exclude=None,
+ def test_reformat_one_with_stdin_filename(self) -> None:
+ with patch(
+ "black.format_stdin_to_stdout",
+ return_value=lambda *args, **kwargs: black.Changed.YES,
+ ) as fsts:
+ report = MagicMock()
+ p = "foo.py"
+ path = Path(f"__BLACK_STDIN_FILENAME__{p}")
+ expected = Path(p)
+ black.reformat_one(
+ path,
+ fast=True,
+ write_back=black.WriteBack.YES,
+ mode=DEFAULT_MODE,
report=report,
- stdin_filename=stdin_filename,
)
- )
- self.assertEqual(sorted(expected), sorted(sources))
-
- @patch("black.find_project_root", lambda *args: THIS_DIR.resolve())
- def test_get_sources_with_stdin_filename_and_force_exclude(self) -> None:
- # Force exclude should exclude the file when passing it through
- # stdin_filename
- path = THIS_DIR / "data" / "include_exclude_tests"
- include = ""
- force_exclude = r"/exclude/|a\.py"
- src = "-"
- report = black.Report()
- stdin_filename = str(path / "b/exclude/a.py")
- sources = list(
- black.get_sources(
- ctx=FakeContext(),
- src=(src,),
- quiet=True,
- verbose=False,
- include=re.compile(include),
- exclude=re.compile(""),
- extend_exclude=None,
- force_exclude=re.compile(force_exclude),
- report=report,
- stdin_filename=stdin_filename,
+ fsts.assert_called_once_with(
+ fast=True, write_back=black.WriteBack.YES, mode=DEFAULT_MODE
)
- )
- self.assertEqual([], sorted(sources))
+ # __BLACK_STDIN_FILENAME__ should have been stripped
+ report.done.assert_called_with(expected, black.Changed.YES)
- def test_reformat_one_with_stdin(self) -> None:
+ def test_reformat_one_with_stdin_filename_pyi(self) -> None:
with patch(
"black.format_stdin_to_stdout",
return_value=lambda *args, **kwargs: black.Changed.YES,
) as fsts:
report = MagicMock()
- path = Path("-")
+ p = "foo.pyi"
+ path = Path(f"__BLACK_STDIN_FILENAME__{p}")
+ expected = Path(p)
black.reformat_one(
path,
fast=True,
mode=DEFAULT_MODE,
report=report,
)
- fsts.assert_called_once()
- report.done.assert_called_with(path, black.Changed.YES)
+ fsts.assert_called_once_with(
+ fast=True,
+ write_back=black.WriteBack.YES,
+ mode=replace(DEFAULT_MODE, is_pyi=True),
+ )
+ # __BLACK_STDIN_FILENAME__ should have been stripped
+ report.done.assert_called_with(expected, black.Changed.YES)
- def test_reformat_one_with_stdin_filename(self) -> None:
+ def test_reformat_one_with_stdin_filename_ipynb(self) -> None:
with patch(
"black.format_stdin_to_stdout",
return_value=lambda *args, **kwargs: black.Changed.YES,
) as fsts:
report = MagicMock()
- p = "foo.py"
+ p = "foo.ipynb"
path = Path(f"__BLACK_STDIN_FILENAME__{p}")
expected = Path(p)
black.reformat_one(
mode=DEFAULT_MODE,
report=report,
)
- fsts.assert_called_once()
- # __BLACK_STDIN_FILENAME__ should have been striped
+ fsts.assert_called_once_with(
+ fast=True,
+ write_back=black.WriteBack.YES,
+ mode=replace(DEFAULT_MODE, is_ipynb=True),
+ )
+ # __BLACK_STDIN_FILENAME__ should have been stripped
report.done.assert_called_with(expected, black.Changed.YES)
def test_reformat_one_with_stdin_and_existing_path(self) -> None:
report=report,
)
fsts.assert_called_once()
- # __BLACK_STDIN_FILENAME__ should have been striped
+ # __BLACK_STDIN_FILENAME__ should have been stripped
report.done.assert_called_with(expected, black.Changed.YES)
- def test_gitignore_exclude(self) -> None:
- path = THIS_DIR / "data" / "include_exclude_tests"
- include = re.compile(r"\.pyi?$")
- exclude = re.compile(r"")
- report = black.Report()
- gitignore = PathSpec.from_lines(
- "gitwildmatch", ["exclude/", ".definitely_exclude"]
+ def test_reformat_one_with_stdin_empty(self) -> None:
+ output = io.StringIO()
+ with patch("io.TextIOWrapper", lambda *args, **kwargs: output):
+ try:
+ black.format_stdin_to_stdout(
+ fast=True,
+ content="",
+ write_back=black.WriteBack.YES,
+ mode=DEFAULT_MODE,
+ )
+ except io.UnsupportedOperation:
+ pass # StringIO does not support detach
+ assert output.getvalue() == ""
+
+ def test_invalid_cli_regex(self) -> None:
+ for option in ["--include", "--exclude", "--extend-exclude", "--force-exclude"]:
+ self.invokeBlack(["-", option, "**()(!!*)"], exit_code=2)
+
+ def test_required_version_matches_version(self) -> None:
+ self.invokeBlack(
+ ["--required-version", black.__version__], exit_code=0, ignore_config=True
)
- sources: List[Path] = []
- expected = [
- Path(path / "b/dont_exclude/a.py"),
- Path(path / "b/dont_exclude/a.pyi"),
- ]
- this_abs = THIS_DIR.resolve()
- sources.extend(
- black.gen_python_files(
- path.iterdir(),
- this_abs,
- include,
- exclude,
- None,
- None,
- report,
- gitignore,
- )
+
+ def test_required_version_does_not_match_version(self) -> None:
+ self.invokeBlack(
+ ["--required-version", "20.99b"], exit_code=1, ignore_config=True
)
- self.assertEqual(sorted(expected), sorted(sources))
+
+ def test_preserves_line_endings(self) -> None:
+ with TemporaryDirectory() as workspace:
+ test_file = Path(workspace) / "test.py"
+ for nl in ["\n", "\r\n"]:
+ contents = nl.join(["def f( ):", " pass"])
+ test_file.write_bytes(contents.encode())
+ ff(test_file, write_back=black.WriteBack.YES)
+ updated_contents: bytes = test_file.read_bytes()
+ self.assertIn(nl.encode(), updated_contents)
+ if nl == "\n":
+ self.assertNotIn(b"\r\n", updated_contents)
+
+ def test_preserves_line_endings_via_stdin(self) -> None:
+ for nl in ["\n", "\r\n"]:
+ contents = nl.join(["def f( ):", " pass"])
+ runner = BlackRunner()
+ result = runner.invoke(
+ black.main, ["-", "--fast"], input=BytesIO(contents.encode("utf8"))
+ )
+ self.assertEqual(result.exit_code, 0)
+ output = result.stdout_bytes
+ self.assertIn(nl.encode("utf8"), output)
+ if nl == "\n":
+ self.assertNotIn(b"\r\n", output)
+
+ def test_assert_equivalent_different_asts(self) -> None:
+ with self.assertRaises(AssertionError):
+ black.assert_equivalent("{}", "None")
+
+ def test_shhh_click(self) -> None:
+ try:
+ from click import _unicodefun
+ except ModuleNotFoundError:
+ self.skipTest("Incompatible Click version")
+ if not hasattr(_unicodefun, "_verify_python3_env"):
+ self.skipTest("Incompatible Click version")
+ # First, let's see if Click is crashing with a preferred ASCII charset.
+ with patch("locale.getpreferredencoding") as gpe:
+ gpe.return_value = "ASCII"
+ with self.assertRaises(RuntimeError):
+ _unicodefun._verify_python3_env() # type: ignore
+ # Now, let's silence Click...
+ black.patch_click()
+ # ...and confirm it's silent.
+ with patch("locale.getpreferredencoding") as gpe:
+ gpe.return_value = "ASCII"
+ try:
+ _unicodefun._verify_python3_env() # type: ignore
+ except RuntimeError as re:
+ self.fail(f"`patch_click()` failed, exception still raised: {re}")
+
+ def test_root_logger_not_used_directly(self) -> None:
+ def fail(*args: Any, **kwargs: Any) -> None:
+ self.fail("Record created with root logger")
+
+ with patch.multiple(
+ logging.root,
+ debug=fail,
+ info=fail,
+ warning=fail,
+ error=fail,
+ critical=fail,
+ log=fail,
+ ):
+ ff(THIS_DIR / "util.py")
+
+ def test_invalid_config_return_code(self) -> None:
+ tmp_file = Path(black.dump_to_file())
+ try:
+ tmp_config = Path(black.dump_to_file())
+ tmp_config.unlink()
+ args = ["--config", str(tmp_config), str(tmp_file)]
+ self.invokeBlack(args, exit_code=2, ignore_config=False)
+ finally:
+ tmp_file.unlink()
+
+ def test_parse_pyproject_toml(self) -> None:
+ test_toml_file = THIS_DIR / "test.toml"
+ config = black.parse_pyproject_toml(str(test_toml_file))
+ self.assertEqual(config["verbose"], 1)
+ self.assertEqual(config["check"], "no")
+ self.assertEqual(config["diff"], "y")
+ self.assertEqual(config["color"], True)
+ self.assertEqual(config["line_length"], 79)
+ self.assertEqual(config["target_version"], ["py36", "py37", "py38"])
+ self.assertEqual(config["exclude"], r"\.pyi?$")
+ self.assertEqual(config["include"], r"\.py?$")
+
+ def test_read_pyproject_toml(self) -> None:
+ test_toml_file = THIS_DIR / "test.toml"
+ fake_ctx = FakeContext()
+ black.read_pyproject_toml(fake_ctx, FakeParameter(), str(test_toml_file))
+ config = fake_ctx.default_map
+ self.assertEqual(config["verbose"], "1")
+ self.assertEqual(config["check"], "no")
+ self.assertEqual(config["diff"], "y")
+ self.assertEqual(config["color"], "True")
+ self.assertEqual(config["line_length"], "79")
+ self.assertEqual(config["target_version"], ["py36", "py37", "py38"])
+ self.assertEqual(config["exclude"], r"\.pyi?$")
+ self.assertEqual(config["include"], r"\.py?$")
+
+ def test_find_project_root(self) -> None:
+ with TemporaryDirectory() as workspace:
+ root = Path(workspace)
+ test_dir = root / "test"
+ test_dir.mkdir()
+
+ src_dir = root / "src"
+ src_dir.mkdir()
+
+ root_pyproject = root / "pyproject.toml"
+ root_pyproject.touch()
+ src_pyproject = src_dir / "pyproject.toml"
+ src_pyproject.touch()
+ src_python = src_dir / "foo.py"
+ src_python.touch()
+
+ self.assertEqual(
+ black.find_project_root((src_dir, test_dir)), root.resolve()
+ )
+ self.assertEqual(black.find_project_root((src_dir,)), src_dir.resolve())
+ self.assertEqual(black.find_project_root((src_python,)), src_dir.resolve())
+
+ @patch(
+ "black.files.find_user_pyproject_toml",
+ black.files.find_user_pyproject_toml.__wrapped__,
+ )
+ def test_find_user_pyproject_toml_linux(self) -> None:
+ if system() == "Windows":
+ return
+
+ # Test if XDG_CONFIG_HOME is checked
+ with TemporaryDirectory() as workspace:
+ tmp_user_config = Path(workspace) / "black"
+ with patch.dict("os.environ", {"XDG_CONFIG_HOME": workspace}):
+ self.assertEqual(
+ black.files.find_user_pyproject_toml(), tmp_user_config.resolve()
+ )
+
+ # Test fallback for XDG_CONFIG_HOME
+ with patch.dict("os.environ"):
+ os.environ.pop("XDG_CONFIG_HOME", None)
+ fallback_user_config = Path("~/.config").expanduser() / "black"
+ self.assertEqual(
+ black.files.find_user_pyproject_toml(), fallback_user_config.resolve()
+ )
+
+ def test_find_user_pyproject_toml_windows(self) -> None:
+ if system() != "Windows":
+ return
+
+ user_config_path = Path.home() / ".black"
+ self.assertEqual(
+ black.files.find_user_pyproject_toml(), user_config_path.resolve()
+ )
+
+ def test_bpo_33660_workaround(self) -> None:
+ if system() == "Windows":
+ return
+
+ # https://bugs.python.org/issue33660
+ root = Path("/")
+ with change_directory(root):
+ path = Path("workspace") / "project"
+ report = black.Report(verbose=True)
+ normalized_path = black.normalize_path_maybe_ignore(path, root, report)
+ self.assertEqual(normalized_path, "workspace/project")
+
+ def test_newline_comment_interaction(self) -> None:
+ source = "class A:\\\r\n# type: ignore\n pass\n"
+ output = black.format_str(source, mode=DEFAULT_MODE)
+ black.assert_stable(source, output, mode=DEFAULT_MODE)
+
+ def test_bpo_2142_workaround(self) -> None:
+
+ # https://bugs.python.org/issue2142
+
+ source, _ = read_data("missing_final_newline.py")
+ # read_data adds a trailing newline
+ source = source.rstrip()
+ expected, _ = read_data("missing_final_newline.diff")
+ tmp_file = Path(black.dump_to_file(source, ensure_final_newline=False))
+ diff_header = re.compile(
+ rf"{re.escape(str(tmp_file))}\t\d\d\d\d-\d\d-\d\d "
+ r"\d\d:\d\d:\d\d\.\d\d\d\d\d\d \+\d\d\d\d"
+ )
+ try:
+ result = BlackRunner().invoke(black.main, ["--diff", str(tmp_file)])
+ self.assertEqual(result.exit_code, 0)
+ finally:
+ os.unlink(tmp_file)
+ actual = result.output
+ actual = diff_header.sub(DETERMINISTIC_HEADER, actual)
+ self.assertEqual(actual, expected)
+
+ @pytest.mark.python2
+ def test_docstring_reformat_for_py27(self) -> None:
+ """
+ Check that stripping trailing whitespace from Python 2 docstrings
+ doesn't trigger a "not equivalent to source" error
+ """
+ source = (
+ b'def foo():\r\n """Testing\r\n Testing """\r\n print "Foo"\r\n'
+ )
+ expected = 'def foo():\n """Testing\n Testing"""\n print "Foo"\n'
+
+ result = CliRunner().invoke(
+ black.main,
+ ["-", "-q", "--target-version=py27"],
+ input=BytesIO(source),
+ )
+
+ self.assertEqual(result.exit_code, 0)
+ actual = result.output
+ self.assertFormatEqual(actual, expected)
+
+ @staticmethod
+ def compare_results(
+ result: click.testing.Result, expected_value: str, expected_exit_code: int
+ ) -> None:
+ """Helper method to test the value and exit code of a click Result."""
+ assert (
+ result.output == expected_value
+ ), "The output did not match the expected value."
+ assert result.exit_code == expected_exit_code, "The exit code is incorrect."
+
+ def test_code_option(self) -> None:
+ """Test the code option with no changes."""
+ code = 'print("Hello world")\n'
+ args = ["--code", code]
+ result = CliRunner().invoke(black.main, args)
+
+ self.compare_results(result, code, 0)
+
+ def test_code_option_changed(self) -> None:
+ """Test the code option when changes are required."""
+ code = "print('hello world')"
+ formatted = black.format_str(code, mode=DEFAULT_MODE)
+
+ args = ["--code", code]
+ result = CliRunner().invoke(black.main, args)
+
+ self.compare_results(result, formatted, 0)
+
+ def test_code_option_check(self) -> None:
+ """Test the code option when check is passed."""
+ args = ["--check", "--code", 'print("Hello world")\n']
+ result = CliRunner().invoke(black.main, args)
+ self.compare_results(result, "", 0)
+
+ def test_code_option_check_changed(self) -> None:
+ """Test the code option when changes are required, and check is passed."""
+ args = ["--check", "--code", "print('hello world')"]
+ result = CliRunner().invoke(black.main, args)
+ self.compare_results(result, "", 1)
+
+ def test_code_option_diff(self) -> None:
+ """Test the code option when diff is passed."""
+ code = "print('hello world')"
+ formatted = black.format_str(code, mode=DEFAULT_MODE)
+ result_diff = diff(code, formatted, "STDIN", "STDOUT")
+
+ args = ["--diff", "--code", code]
+ result = CliRunner().invoke(black.main, args)
+
+ # Remove time from diff
+ output = DIFF_TIME.sub("", result.output)
+
+ assert output == result_diff, "The output did not match the expected value."
+ assert result.exit_code == 0, "The exit code is incorrect."
+
+ def test_code_option_color_diff(self) -> None:
+ """Test the code option when color and diff are passed."""
+ code = "print('hello world')"
+ formatted = black.format_str(code, mode=DEFAULT_MODE)
+
+ result_diff = diff(code, formatted, "STDIN", "STDOUT")
+ result_diff = color_diff(result_diff)
+
+ args = ["--diff", "--color", "--code", code]
+ result = CliRunner().invoke(black.main, args)
+
+ # Remove time from diff
+ output = DIFF_TIME.sub("", result.output)
+
+ assert output == result_diff, "The output did not match the expected value."
+ assert result.exit_code == 0, "The exit code is incorrect."
+
+ def test_code_option_safe(self) -> None:
+ """Test that the code option throws an error when the sanity checks fail."""
+ # Patch black.assert_equivalent to ensure the sanity checks fail
+ with patch.object(black, "assert_equivalent", side_effect=AssertionError):
+ code = 'print("Hello world")'
+ error_msg = f"{code}\nerror: cannot format <string>: \n"
+
+ args = ["--safe", "--code", code]
+ result = CliRunner().invoke(black.main, args)
+
+ self.compare_results(result, error_msg, 123)
+
+ def test_code_option_fast(self) -> None:
+ """Test that the code option ignores errors when the sanity checks fail."""
+ # Patch black.assert_equivalent to ensure the sanity checks fail
+ with patch.object(black, "assert_equivalent", side_effect=AssertionError):
+ code = 'print("Hello world")'
+ formatted = black.format_str(code, mode=DEFAULT_MODE)
+
+ args = ["--fast", "--code", code]
+ result = CliRunner().invoke(black.main, args)
+
+ self.compare_results(result, formatted, 0)
+
+ def test_code_option_config(self) -> None:
+ """
+ Test that the code option finds the pyproject.toml in the current directory.
+ """
+ with patch.object(black, "parse_pyproject_toml", return_value={}) as parse:
+ args = ["--code", "print"]
+ # This is the only directory known to contain a pyproject.toml
+ with change_directory(PROJECT_ROOT):
+ CliRunner().invoke(black.main, args)
+ pyproject_path = Path(Path.cwd(), "pyproject.toml").resolve()
+
+ assert (
+ len(parse.mock_calls) >= 1
+ ), "Expected config parse to be called with the current directory."
+
+ _, call_args, _ = parse.mock_calls[0]
+ assert (
+ call_args[0].lower() == str(pyproject_path).lower()
+ ), "Incorrect config loaded."
+
+ def test_code_option_parent_config(self) -> None:
+ """
+ Test that the code option finds the pyproject.toml in the parent directory.
+ """
+ with patch.object(black, "parse_pyproject_toml", return_value={}) as parse:
+ with change_directory(THIS_DIR):
+ args = ["--code", "print"]
+ CliRunner().invoke(black.main, args)
+
+ pyproject_path = Path(Path().cwd().parent, "pyproject.toml").resolve()
+ assert (
+ len(parse.mock_calls) >= 1
+ ), "Expected config parse to be called with the current directory."
+
+ _, call_args, _ = parse.mock_calls[0]
+ assert (
+ call_args[0].lower() == str(pyproject_path).lower()
+ ), "Incorrect config loaded."
+
+
+class TestCaching:
+ def test_cache_broken_file(self) -> None:
+ mode = DEFAULT_MODE
+ with cache_dir() as workspace:
+ cache_file = get_cache_file(mode)
+ cache_file.write_text("this is not a pickle")
+ assert black.read_cache(mode) == {}
+ src = (workspace / "test.py").resolve()
+ src.write_text("print('hello')")
+ invokeBlack([str(src)])
+ cache = black.read_cache(mode)
+ assert str(src) in cache
+
+ def test_cache_single_file_already_cached(self) -> None:
+ mode = DEFAULT_MODE
+ with cache_dir() as workspace:
+ src = (workspace / "test.py").resolve()
+ src.write_text("print('hello')")
+ black.write_cache({}, [src], mode)
+ invokeBlack([str(src)])
+ assert src.read_text() == "print('hello')"
+
+ @event_loop()
+ def test_cache_multiple_files(self) -> None:
+ mode = DEFAULT_MODE
+ with cache_dir() as workspace, patch(
+ "black.ProcessPoolExecutor", new=ThreadPoolExecutor
+ ):
+ one = (workspace / "one.py").resolve()
+ with one.open("w") as fobj:
+ fobj.write("print('hello')")
+ two = (workspace / "two.py").resolve()
+ with two.open("w") as fobj:
+ fobj.write("print('hello')")
+ black.write_cache({}, [one], mode)
+ invokeBlack([str(workspace)])
+ with one.open("r") as fobj:
+ assert fobj.read() == "print('hello')"
+ with two.open("r") as fobj:
+ assert fobj.read() == 'print("hello")\n'
+ cache = black.read_cache(mode)
+ assert str(one) in cache
+ assert str(two) in cache
+
+ @pytest.mark.parametrize("color", [False, True], ids=["no-color", "with-color"])
+ def test_no_cache_when_writeback_diff(self, color: bool) -> None:
+ mode = DEFAULT_MODE
+ with cache_dir() as workspace:
+ src = (workspace / "test.py").resolve()
+ with src.open("w") as fobj:
+ fobj.write("print('hello')")
+ with patch("black.read_cache") as read_cache, patch(
+ "black.write_cache"
+ ) as write_cache:
+ cmd = [str(src), "--diff"]
+ if color:
+ cmd.append("--color")
+ invokeBlack(cmd)
+ cache_file = get_cache_file(mode)
+ assert cache_file.exists() is False
+ write_cache.assert_not_called()
+ read_cache.assert_not_called()
+
+ @pytest.mark.parametrize("color", [False, True], ids=["no-color", "with-color"])
+ @event_loop()
+ def test_output_locking_when_writeback_diff(self, color: bool) -> None:
+ with cache_dir() as workspace:
+ for tag in range(0, 4):
+ 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:
+ cmd = ["--diff", str(workspace)]
+ if color:
+ cmd.append("--color")
+ invokeBlack(cmd, exit_code=0)
+ # this isn't quite doing what we want, but if it _isn't_
+ # called then we cannot be using the lock it provides
+ mgr.assert_called()
+
+ def test_no_cache_when_stdin(self) -> None:
+ mode = DEFAULT_MODE
+ with cache_dir():
+ result = CliRunner().invoke(
+ black.main, ["-"], input=BytesIO(b"print('hello')")
+ )
+ assert not result.exit_code
+ cache_file = get_cache_file(mode)
+ assert not cache_file.exists()
+
+ def test_read_cache_no_cachefile(self) -> None:
+ mode = DEFAULT_MODE
+ with cache_dir():
+ assert black.read_cache(mode) == {}
+
+ def test_write_cache_read_cache(self) -> None:
+ mode = DEFAULT_MODE
+ with cache_dir() as workspace:
+ src = (workspace / "test.py").resolve()
+ src.touch()
+ black.write_cache({}, [src], mode)
+ cache = black.read_cache(mode)
+ assert str(src) in cache
+ assert cache[str(src)] == black.get_cache_info(src)
+
+ def test_filter_cached(self) -> None:
+ with TemporaryDirectory() as workspace:
+ path = Path(workspace)
+ uncached = (path / "uncached").resolve()
+ cached = (path / "cached").resolve()
+ cached_but_changed = (path / "changed").resolve()
+ uncached.touch()
+ cached.touch()
+ cached_but_changed.touch()
+ cache = {
+ str(cached): black.get_cache_info(cached),
+ str(cached_but_changed): (0.0, 0),
+ }
+ todo, done = black.filter_cached(
+ cache, {uncached, cached, cached_but_changed}
+ )
+ assert todo == {uncached, cached_but_changed}
+ assert done == {cached}
+
+ def test_write_cache_creates_directory_if_needed(self) -> None:
+ mode = DEFAULT_MODE
+ with cache_dir(exists=False) as workspace:
+ assert not workspace.exists()
+ black.write_cache({}, [], mode)
+ assert workspace.exists()
+
+ @event_loop()
+ def test_failed_formatting_does_not_get_cached(self) -> None:
+ mode = DEFAULT_MODE
+ with cache_dir() as workspace, patch(
+ "black.ProcessPoolExecutor", new=ThreadPoolExecutor
+ ):
+ failing = (workspace / "failing.py").resolve()
+ with failing.open("w") as fobj:
+ fobj.write("not actually python")
+ clean = (workspace / "clean.py").resolve()
+ with clean.open("w") as fobj:
+ fobj.write('print("hello")\n')
+ invokeBlack([str(workspace)], exit_code=123)
+ cache = black.read_cache(mode)
+ assert str(failing) not in cache
+ assert str(clean) in cache
+
+ def test_write_cache_write_fail(self) -> None:
+ mode = DEFAULT_MODE
+ with cache_dir(), patch.object(Path, "open") as mock:
+ mock.side_effect = OSError
+ black.write_cache({}, [], mode)
+
+ def test_read_cache_line_lengths(self) -> None:
+ mode = DEFAULT_MODE
+ short_mode = replace(DEFAULT_MODE, line_length=1)
+ with cache_dir() as workspace:
+ path = (workspace / "file.py").resolve()
+ path.touch()
+ black.write_cache({}, [path], mode)
+ one = black.read_cache(mode)
+ assert str(path) in one
+ two = black.read_cache(short_mode)
+ assert str(path) not in two
+
+
+def assert_collected_sources(
+ src: Sequence[Union[str, Path]],
+ expected: Sequence[Union[str, Path]],
+ *,
+ exclude: Optional[str] = None,
+ include: Optional[str] = None,
+ extend_exclude: Optional[str] = None,
+ force_exclude: Optional[str] = None,
+ stdin_filename: Optional[str] = None,
+) -> None:
+ gs_src = tuple(str(Path(s)) for s in src)
+ gs_expected = [Path(s) for s in expected]
+ gs_exclude = None if exclude is None else compile_pattern(exclude)
+ gs_include = DEFAULT_INCLUDE if include is None else compile_pattern(include)
+ gs_extend_exclude = (
+ None if extend_exclude is None else compile_pattern(extend_exclude)
+ )
+ gs_force_exclude = None if force_exclude is None else compile_pattern(force_exclude)
+ collected = black.get_sources(
+ ctx=FakeContext(),
+ src=gs_src,
+ quiet=False,
+ verbose=False,
+ include=gs_include,
+ exclude=gs_exclude,
+ extend_exclude=gs_extend_exclude,
+ force_exclude=gs_force_exclude,
+ report=black.Report(),
+ stdin_filename=stdin_filename,
+ )
+ assert sorted(list(collected)) == sorted(gs_expected)
+
+
+class TestFileCollection:
+ def test_include_exclude(self) -> None:
+ path = THIS_DIR / "data" / "include_exclude_tests"
+ src = [path]
+ expected = [
+ Path(path / "b/dont_exclude/a.py"),
+ Path(path / "b/dont_exclude/a.pyi"),
+ ]
+ assert_collected_sources(
+ src,
+ expected,
+ include=r"\.pyi?$",
+ exclude=r"/exclude/|/\.definitely_exclude/",
+ )
+
+ def test_gitignore_used_as_default(self) -> None:
+ base = Path(DATA_DIR / "include_exclude_tests")
+ expected = [
+ base / "b/.definitely_exclude/a.py",
+ base / "b/.definitely_exclude/a.pyi",
+ ]
+ src = [base / "b/"]
+ assert_collected_sources(src, expected, extend_exclude=r"/exclude/")
+
+ @patch("black.find_project_root", lambda *args: THIS_DIR.resolve())
+ def test_exclude_for_issue_1572(self) -> None:
+ # Exclude shouldn't touch files that were explicitly given to Black through the
+ # CLI. Exclude is supposed to only apply to the recursive discovery of files.
+ # https://github.com/psf/black/issues/1572
+ path = DATA_DIR / "include_exclude_tests"
+ src = [path / "b/exclude/a.py"]
+ expected = [path / "b/exclude/a.py"]
+ assert_collected_sources(src, expected, include="", exclude=r"/exclude/|a\.py")
+
+ def test_gitignore_exclude(self) -> None:
+ path = THIS_DIR / "data" / "include_exclude_tests"
+ include = re.compile(r"\.pyi?$")
+ exclude = re.compile(r"")
+ report = black.Report()
+ gitignore = PathSpec.from_lines(
+ "gitwildmatch", ["exclude/", ".definitely_exclude"]
+ )
+ sources: List[Path] = []
+ expected = [
+ Path(path / "b/dont_exclude/a.py"),
+ Path(path / "b/dont_exclude/a.pyi"),
+ ]
+ this_abs = THIS_DIR.resolve()
+ sources.extend(
+ black.gen_python_files(
+ path.iterdir(),
+ this_abs,
+ include,
+ exclude,
+ None,
+ None,
+ report,
+ gitignore,
+ verbose=False,
+ quiet=False,
+ )
+ )
+ assert sorted(expected) == sorted(sources)
+
+ def test_nested_gitignore(self) -> None:
+ path = Path(THIS_DIR / "data" / "nested_gitignore_tests")
+ include = re.compile(r"\.pyi?$")
+ exclude = re.compile(r"")
+ root_gitignore = black.files.get_gitignore(path)
+ report = black.Report()
+ expected: List[Path] = [
+ Path(path / "x.py"),
+ Path(path / "root/b.py"),
+ Path(path / "root/c.py"),
+ Path(path / "root/child/c.py"),
+ ]
+ this_abs = THIS_DIR.resolve()
+ sources = list(
+ black.gen_python_files(
+ path.iterdir(),
+ this_abs,
+ include,
+ exclude,
+ None,
+ None,
+ report,
+ root_gitignore,
+ verbose=False,
+ quiet=False,
+ )
+ )
+ assert sorted(expected) == sorted(sources)
+
+ def test_invalid_gitignore(self) -> None:
+ path = THIS_DIR / "data" / "invalid_gitignore_tests"
+ empty_config = path / "pyproject.toml"
+ result = BlackRunner().invoke(
+ black.main, ["--verbose", "--config", str(empty_config), str(path)]
+ )
+ assert result.exit_code == 1
+ assert result.stderr_bytes is not None
+
+ gitignore = path / ".gitignore"
+ assert f"Could not parse {gitignore}" in result.stderr_bytes.decode()
+
+ def test_invalid_nested_gitignore(self) -> None:
+ path = THIS_DIR / "data" / "invalid_nested_gitignore_tests"
+ empty_config = path / "pyproject.toml"
+ result = BlackRunner().invoke(
+ black.main, ["--verbose", "--config", str(empty_config), str(path)]
+ )
+ assert result.exit_code == 1
+ assert result.stderr_bytes is not None
+
+ gitignore = path / "a" / ".gitignore"
+ assert f"Could not parse {gitignore}" in result.stderr_bytes.decode()
def test_empty_include(self) -> None:
- path = THIS_DIR / "data" / "include_exclude_tests"
- report = black.Report()
- gitignore = PathSpec.from_lines("gitwildmatch", [])
- empty = re.compile(r"")
- sources: List[Path] = []
+ path = DATA_DIR / "include_exclude_tests"
+ src = [path]
expected = [
Path(path / "b/exclude/a.pie"),
Path(path / "b/exclude/a.py"),
Path(path / "b/.definitely_exclude/a.pie"),
Path(path / "b/.definitely_exclude/a.py"),
Path(path / "b/.definitely_exclude/a.pyi"),
+ Path(path / ".gitignore"),
+ Path(path / "pyproject.toml"),
]
- this_abs = THIS_DIR.resolve()
- sources.extend(
- black.gen_python_files(
- path.iterdir(),
- this_abs,
- empty,
- re.compile(black.DEFAULT_EXCLUDES),
- None,
- None,
- report,
- gitignore,
- )
- )
- self.assertEqual(sorted(expected), sorted(sources))
+ # Setting exclude explicitly to an empty string to block .gitignore usage.
+ assert_collected_sources(src, expected, include="", exclude="")
def test_extend_exclude(self) -> None:
- path = THIS_DIR / "data" / "include_exclude_tests"
- report = black.Report()
- gitignore = PathSpec.from_lines("gitwildmatch", [])
- sources: List[Path] = []
+ path = DATA_DIR / "include_exclude_tests"
+ src = [path]
expected = [
Path(path / "b/exclude/a.py"),
Path(path / "b/dont_exclude/a.py"),
]
- this_abs = THIS_DIR.resolve()
- sources.extend(
- black.gen_python_files(
- path.iterdir(),
- this_abs,
- re.compile(black.DEFAULT_INCLUDES),
- re.compile(r"\.pyi$"),
- re.compile(r"\.definitely_exclude"),
- None,
- report,
- gitignore,
- )
+ assert_collected_sources(
+ src, expected, exclude=r"\.pyi$", extend_exclude=r"\.definitely_exclude"
)
- self.assertEqual(sorted(expected), sorted(sources))
-
- def test_invalid_cli_regex(self) -> None:
- for option in ["--include", "--exclude", "--extend-exclude", "--force-exclude"]:
- self.invokeBlack(["-", option, "**()(!!*)"], exit_code=2)
-
- def test_preserves_line_endings(self) -> None:
- with TemporaryDirectory() as workspace:
- test_file = Path(workspace) / "test.py"
- for nl in ["\n", "\r\n"]:
- contents = nl.join(["def f( ):", " pass"])
- test_file.write_bytes(contents.encode())
- ff(test_file, write_back=black.WriteBack.YES)
- updated_contents: bytes = test_file.read_bytes()
- self.assertIn(nl.encode(), updated_contents)
- if nl == "\n":
- self.assertNotIn(b"\r\n", updated_contents)
-
- def test_preserves_line_endings_via_stdin(self) -> None:
- for nl in ["\n", "\r\n"]:
- contents = nl.join(["def f( ):", " pass"])
- runner = BlackRunner()
- result = runner.invoke(
- black.main, ["-", "--fast"], input=BytesIO(contents.encode("utf8"))
- )
- self.assertEqual(result.exit_code, 0)
- output = runner.stdout_bytes
- self.assertIn(nl.encode("utf8"), output)
- if nl == "\n":
- self.assertNotIn(b"\r\n", output)
-
- def test_assert_equivalent_different_asts(self) -> None:
- with self.assertRaises(AssertionError):
- black.assert_equivalent("{}", "None")
def test_symlink_out_of_root_directory(self) -> None:
path = MagicMock()
None,
report,
gitignore,
+ verbose=False,
+ quiet=False,
)
)
except ValueError as ve:
- self.fail(f"`get_python_files_in_dir()` failed: {ve}")
+ pytest.fail(f"`get_python_files_in_dir()` failed: {ve}")
path.iterdir.assert_called_once()
child.resolve.assert_called_once()
child.is_symlink.assert_called_once()
# `child` should behave like a strange file which resolved path is clearly
# outside of the `root` directory.
child.is_symlink.return_value = False
- with self.assertRaises(ValueError):
+ with pytest.raises(ValueError):
list(
black.gen_python_files(
path.iterdir(),
None,
report,
gitignore,
+ verbose=False,
+ quiet=False,
)
)
path.iterdir.assert_called()
- self.assertEqual(path.iterdir.call_count, 2)
+ assert path.iterdir.call_count == 2
child.resolve.assert_called()
- self.assertEqual(child.resolve.call_count, 2)
+ assert child.resolve.call_count == 2
child.is_symlink.assert_called()
- self.assertEqual(child.is_symlink.call_count, 2)
-
- def test_shhh_click(self) -> None:
- try:
- from click import _unicodefun # type: ignore
- except ModuleNotFoundError:
- self.skipTest("Incompatible Click version")
- if not hasattr(_unicodefun, "_verify_python3_env"):
- self.skipTest("Incompatible Click version")
- # First, let's see if Click is crashing with a preferred ASCII charset.
- with patch("locale.getpreferredencoding") as gpe:
- gpe.return_value = "ASCII"
- with self.assertRaises(RuntimeError):
- _unicodefun._verify_python3_env()
- # Now, let's silence Click...
- black.patch_click()
- # ...and confirm it's silent.
- with patch("locale.getpreferredencoding") as gpe:
- gpe.return_value = "ASCII"
- try:
- _unicodefun._verify_python3_env()
- except RuntimeError as re:
- self.fail(f"`patch_click()` failed, exception still raised: {re}")
-
- def test_root_logger_not_used_directly(self) -> None:
- def fail(*args: Any, **kwargs: Any) -> None:
- self.fail("Record created with root logger")
-
- with patch.multiple(
- logging.root,
- debug=fail,
- info=fail,
- warning=fail,
- error=fail,
- critical=fail,
- log=fail,
- ):
- ff(THIS_FILE)
-
- def test_invalid_config_return_code(self) -> None:
- tmp_file = Path(black.dump_to_file())
- try:
- tmp_config = Path(black.dump_to_file())
- tmp_config.unlink()
- args = ["--config", str(tmp_config), str(tmp_file)]
- self.invokeBlack(args, exit_code=2, ignore_config=False)
- finally:
- tmp_file.unlink()
-
- def test_parse_pyproject_toml(self) -> None:
- test_toml_file = THIS_DIR / "test.toml"
- config = black.parse_pyproject_toml(str(test_toml_file))
- self.assertEqual(config["verbose"], 1)
- self.assertEqual(config["check"], "no")
- self.assertEqual(config["diff"], "y")
- self.assertEqual(config["color"], True)
- self.assertEqual(config["line_length"], 79)
- self.assertEqual(config["target_version"], ["py36", "py37", "py38"])
- self.assertEqual(config["exclude"], r"\.pyi?$")
- self.assertEqual(config["include"], r"\.py?$")
-
- def test_read_pyproject_toml(self) -> None:
- test_toml_file = THIS_DIR / "test.toml"
- fake_ctx = FakeContext()
- black.read_pyproject_toml(fake_ctx, FakeParameter(), str(test_toml_file))
- config = fake_ctx.default_map
- self.assertEqual(config["verbose"], "1")
- self.assertEqual(config["check"], "no")
- self.assertEqual(config["diff"], "y")
- self.assertEqual(config["color"], "True")
- self.assertEqual(config["line_length"], "79")
- self.assertEqual(config["target_version"], ["py36", "py37", "py38"])
- self.assertEqual(config["exclude"], r"\.pyi?$")
- self.assertEqual(config["include"], r"\.py?$")
-
- def test_find_project_root(self) -> None:
- with TemporaryDirectory() as workspace:
- root = Path(workspace)
- test_dir = root / "test"
- test_dir.mkdir()
-
- src_dir = root / "src"
- src_dir.mkdir()
-
- root_pyproject = root / "pyproject.toml"
- root_pyproject.touch()
- src_pyproject = src_dir / "pyproject.toml"
- src_pyproject.touch()
- src_python = src_dir / "foo.py"
- src_python.touch()
-
- self.assertEqual(
- black.find_project_root((src_dir, test_dir)), root.resolve()
- )
- self.assertEqual(black.find_project_root((src_dir,)), src_dir.resolve())
- self.assertEqual(black.find_project_root((src_python,)), src_dir.resolve())
-
- @patch("black.find_user_pyproject_toml", black.find_user_pyproject_toml.__wrapped__)
- def test_find_user_pyproject_toml_linux(self) -> None:
- if system() == "Windows":
- return
-
- # Test if XDG_CONFIG_HOME is checked
- with TemporaryDirectory() as workspace:
- tmp_user_config = Path(workspace) / "black"
- with patch.dict("os.environ", {"XDG_CONFIG_HOME": workspace}):
- self.assertEqual(
- black.find_user_pyproject_toml(), tmp_user_config.resolve()
- )
-
- # Test fallback for XDG_CONFIG_HOME
- with patch.dict("os.environ"):
- os.environ.pop("XDG_CONFIG_HOME", None)
- fallback_user_config = Path("~/.config").expanduser() / "black"
- self.assertEqual(
- black.find_user_pyproject_toml(), fallback_user_config.resolve()
- )
-
- def test_find_user_pyproject_toml_windows(self) -> None:
- if system() != "Windows":
- return
-
- user_config_path = Path.home() / ".black"
- self.assertEqual(black.find_user_pyproject_toml(), user_config_path.resolve())
-
- def test_bpo_33660_workaround(self) -> None:
- if system() == "Windows":
- return
-
- # https://bugs.python.org/issue33660
-
- old_cwd = Path.cwd()
- try:
- root = Path("/")
- os.chdir(str(root))
- path = Path("workspace") / "project"
- report = black.Report(verbose=True)
- normalized_path = black.normalize_path_maybe_ignore(path, root, report)
- self.assertEqual(normalized_path, "workspace/project")
- finally:
- os.chdir(str(old_cwd))
-
- def test_newline_comment_interaction(self) -> None:
- source = "class A:\\\r\n# type: ignore\n pass\n"
- output = black.format_str(source, mode=DEFAULT_MODE)
- black.assert_stable(source, output, mode=DEFAULT_MODE)
-
- def test_bpo_2142_workaround(self) -> None:
+ assert child.is_symlink.call_count == 2
- # https://bugs.python.org/issue2142
+ @patch("black.find_project_root", lambda *args: THIS_DIR.resolve())
+ def test_get_sources_with_stdin(self) -> None:
+ src = ["-"]
+ expected = ["-"]
+ assert_collected_sources(src, expected, include="", exclude=r"/exclude/|a\.py")
- source, _ = read_data("missing_final_newline.py")
- # read_data adds a trailing newline
- source = source.rstrip()
- expected, _ = read_data("missing_final_newline.diff")
- tmp_file = Path(black.dump_to_file(source, ensure_final_newline=False))
- diff_header = re.compile(
- rf"{re.escape(str(tmp_file))}\t\d\d\d\d-\d\d-\d\d "
- r"\d\d:\d\d:\d\d\.\d\d\d\d\d\d \+\d\d\d\d"
+ @patch("black.find_project_root", lambda *args: THIS_DIR.resolve())
+ def test_get_sources_with_stdin_filename(self) -> None:
+ src = ["-"]
+ stdin_filename = str(THIS_DIR / "data/collections.py")
+ expected = [f"__BLACK_STDIN_FILENAME__{stdin_filename}"]
+ assert_collected_sources(
+ src,
+ expected,
+ exclude=r"/exclude/a\.py",
+ stdin_filename=stdin_filename,
)
- try:
- result = BlackRunner().invoke(black.main, ["--diff", str(tmp_file)])
- self.assertEqual(result.exit_code, 0)
- finally:
- os.unlink(tmp_file)
- actual = result.output
- actual = diff_header.sub(DETERMINISTIC_HEADER, actual)
- self.assertEqual(actual, expected)
- def test_docstring_reformat_for_py27(self) -> None:
- """
- Check that stripping trailing whitespace from Python 2 docstrings
- doesn't trigger a "not equivalent to source" error
- """
- source = (
- b'def foo():\r\n """Testing\r\n Testing """\r\n print "Foo"\r\n'
+ @patch("black.find_project_root", lambda *args: THIS_DIR.resolve())
+ def test_get_sources_with_stdin_filename_and_exclude(self) -> None:
+ # Exclude shouldn't exclude stdin_filename since it is mimicking the
+ # file being passed directly. This is the same as
+ # test_exclude_for_issue_1572
+ path = DATA_DIR / "include_exclude_tests"
+ src = ["-"]
+ stdin_filename = str(path / "b/exclude/a.py")
+ expected = [f"__BLACK_STDIN_FILENAME__{stdin_filename}"]
+ assert_collected_sources(
+ src,
+ expected,
+ exclude=r"/exclude/|a\.py",
+ stdin_filename=stdin_filename,
)
- expected = 'def foo():\n """Testing\n Testing"""\n print "Foo"\n'
- result = CliRunner().invoke(
- black.main,
- ["-", "-q", "--target-version=py27"],
- input=BytesIO(source),
+ @patch("black.find_project_root", lambda *args: THIS_DIR.resolve())
+ def test_get_sources_with_stdin_filename_and_extend_exclude(self) -> None:
+ # Extend exclude shouldn't exclude stdin_filename since it is mimicking the
+ # file being passed directly. This is the same as
+ # test_exclude_for_issue_1572
+ src = ["-"]
+ path = THIS_DIR / "data" / "include_exclude_tests"
+ stdin_filename = str(path / "b/exclude/a.py")
+ expected = [f"__BLACK_STDIN_FILENAME__{stdin_filename}"]
+ assert_collected_sources(
+ src,
+ expected,
+ extend_exclude=r"/exclude/|a\.py",
+ stdin_filename=stdin_filename,
)
- self.assertEqual(result.exit_code, 0)
- actual = result.output
- self.assertFormatEqual(actual, expected)
+ @patch("black.find_project_root", lambda *args: THIS_DIR.resolve())
+ def test_get_sources_with_stdin_filename_and_force_exclude(self) -> None:
+ # Force exclude should exclude the file when passing it through
+ # stdin_filename
+ path = THIS_DIR / "data" / "include_exclude_tests"
+ stdin_filename = str(path / "b/exclude/a.py")
+ assert_collected_sources(
+ src=["-"],
+ expected=[],
+ force_exclude=r"/exclude/|a\.py",
+ stdin_filename=stdin_filename,
+ )
with open(black.__file__, "r", encoding="utf-8") as _bf:
black_source_lines = _bf.readlines()
-def tracefunc(frame: types.FrameType, event: str, arg: Any) -> Callable:
+def tracefunc(
+ frame: types.FrameType, event: str, arg: Any
+) -> Callable[[types.FrameType, str, Any], Any]:
"""Show function calls `from black/__init__.py` as they happen.
Register this with `sys.settrace()` in a test you're debugging.
if "black/__init__.py" in filename:
print(f"{' ' * stack}{lineno}:{funcname}")
return tracefunc
-
-
-if __name__ == "__main__":
- unittest.main(module="test_black")
projects / etc / vim.git / blobdiff