#!/usr/bin/env python3
+
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 functools import partial
-from io import BytesIO, TextIOWrapper
-import os
+from dataclasses import replace
+from io import BytesIO
from pathlib import Path
-import regex as re
-import sys
+from platform import system
from tempfile import TemporaryDirectory
-from typing import Any, BinaryIO, Generator, List, Tuple, Iterator, TypeVar
-import unittest
-from unittest.mock import patch, MagicMock
-
+from typing import (
+ Any,
+ Callable,
+ Dict,
+ Iterator,
+ List,
+ Optional,
+ Sequence,
+ TypeVar,
+ Union,
+)
+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 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 (
+ DATA_DIR,
+ DEFAULT_MODE,
+ DETERMINISTIC_HEADER,
+ PROJECT_ROOT,
+ PY36_VERSIONS,
+ THIS_DIR,
+ BlackBaseTestCase,
+ assert_format,
+ change_directory,
+ dump_to_stderr,
+ ff,
+ fs,
+ read_data,
+)
-try:
- import blackd
- from aiohttp.test_utils import AioHTTPTestCase, unittest_run_loop
- from aiohttp import web
-except ImportError:
- has_blackd_deps = False
-else:
- has_blackd_deps = True
-
-from pathspec import PathSpec
-
-ff = partial(black.format_file_in_place, mode=black.FileMode(), fast=True)
-fs = partial(black.format_str, mode=black.FileMode())
THIS_FILE = Path(__file__)
-THIS_DIR = THIS_FILE.parent
-DETERMINISTIC_HEADER = "[Deterministic header]"
-EMPTY_LINE = "# EMPTY LINE WITH WHITESPACE" + " (this comment will be removed)"
-PY36_ARGS = [
- f"--target-version={version.name.lower()}" for version in black.PY36_VERSIONS
-]
+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")
-
-def dump_to_stderr(*output: str) -> str:
- return "\n" + "\n".join(output) + "\n"
-
-
-def read_data(name: str, data: bool = True) -> Tuple[str, str]:
- """read_data('test_name') -> 'input', 'output'"""
- if not name.endswith((".py", ".pyi", ".out", ".diff")):
- name += ".py"
- _input: List[str] = []
- _output: List[str] = []
- base_dir = THIS_DIR / "data" if data else THIS_DIR
- with open(base_dir / name, "r", encoding="utf8") as test:
- lines = test.readlines()
- result = _input
- for line in lines:
- line = line.replace(EMPTY_LINE, "")
- if line.rstrip() == "# output":
- result = _output
- continue
-
- result.append(line)
- if _input and not _output:
- # If there's no output marker, treat the entire file as already pre-formatted.
- _output = _input[:]
- return "".join(_input).strip() + "\n", "".join(_output).strip() + "\n"
+# Match the time output in a diff, but nothing else
+DIFF_TIME = re.compile(r"\t[\d-:+\. ]+")
@contextmanager
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
@contextmanager
-def event_loop(close: bool) -> Iterator[None]:
+def event_loop() -> Iterator[None]:
policy = asyncio.get_event_loop_policy()
loop = policy.new_event_loop()
asyncio.set_event_loop(loop)
yield
finally:
- if close:
- loop.close()
+ loop.close()
-@contextmanager
-def skip_if_exception(e: str) -> Iterator[None]:
- try:
- yield
- except Exception as exc:
- if exc.__class__.__name__ == e:
- unittest.skip(f"Encountered expected exception {exc}, skipping")
- else:
- raise
+class FakeContext(click.Context):
+ """A fake click Context for when calling functions that need it."""
+ def __init__(self) -> None:
+ self.default_map: Dict[str, Any] = {}
-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"""
+class FakeParameter(click.Parameter):
+ """A fake click Parameter for when calling functions that need it."""
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
-
-
-class BlackTestCase(unittest.TestCase):
- maxDiff = None
-
- def assertFormatEqual(self, expected: str, actual: str) -> None:
- if actual != expected and not os.environ.get("SKIP_AST_PRINT"):
- bdv: black.DebugVisitor[Any]
- black.out("Expected tree:", fg="green")
- try:
- exp_node = black.lib2to3_parse(expected)
- bdv = black.DebugVisitor()
- list(bdv.visit(exp_node))
- except Exception as ve:
- black.err(str(ve))
- black.out("Actual tree:", fg="red")
- try:
- exp_node = black.lib2to3_parse(actual)
- bdv = black.DebugVisitor()
- list(bdv.visit(exp_node))
- except Exception as ve:
- black.err(str(ve))
- self.assertEqual(expected, actual)
+ pass
- 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 checkSourceFile(self, name: str) -> None:
- path = THIS_DIR.parent / name
- source, expected = read_data(str(path), data=False)
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
- self.assertFalse(ff(path))
+class BlackRunner(CliRunner):
+ """Make sure STDOUT and STDERR are kept separate when testing Black via its CLI."""
- @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, black.FileMode())
+ def __init__(self) -> None:
+ 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):
+ invokeBlack = staticmethod(invokeBlack)
def test_empty_ff(self) -> None:
expected = ""
os.unlink(tmp_file)
self.assertFormatEqual(expected, actual)
- def test_self(self) -> None:
- self.checkSourceFile("tests/test_black.py")
-
- def test_black(self) -> None:
- self.checkSourceFile("black.py")
-
- def test_pygram(self) -> None:
- self.checkSourceFile("blib2to3/pygram.py")
-
- def test_pytree(self) -> None:
- self.checkSourceFile("blib2to3/pytree.py")
-
- def test_conv(self) -> None:
- self.checkSourceFile("blib2to3/pgen2/conv.py")
-
- def test_driver(self) -> None:
- self.checkSourceFile("blib2to3/pgen2/driver.py")
-
- def test_grammar(self) -> None:
- self.checkSourceFile("blib2to3/pgen2/grammar.py")
-
- def test_literals(self) -> None:
- self.checkSourceFile("blib2to3/pgen2/literals.py")
-
- def test_parse(self) -> None:
- self.checkSourceFile("blib2to3/pgen2/parse.py")
-
- def test_pgen(self) -> None:
- self.checkSourceFile("blib2to3/pgen2/pgen.py")
-
- def test_tokenize(self) -> None:
- self.checkSourceFile("blib2to3/pgen2/tokenize.py")
-
- def test_token(self) -> None:
- self.checkSourceFile("blib2to3/pgen2/token.py")
-
- def test_setup(self) -> None:
- self.checkSourceFile("setup.py")
-
def test_piping(self) -> None:
- source, expected = read_data("../black", data=False)
+ source, expected = read_data("src/black/__init__", data=False)
result = BlackRunner().invoke(
black.main,
["-", "--fast", f"--line-length={black.DEFAULT_LINE_LENGTH}"],
)
self.assertEqual(result.exit_code, 0)
self.assertFormatEqual(expected, result.output)
- black.assert_equivalent(source, result.output)
- black.assert_stable(source, result.output, black.FileMode())
+ 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(
- rf"(STDIN|STDOUT)\t\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d\.\d\d\d\d\d\d "
- rf"\+\d\d\d\d"
+ r"(STDIN|STDOUT)\t\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d\.\d\d\d\d\d\d "
+ r"\+\d\d\d\d"
)
source, _ = read_data("expression.py")
expected, _ = read_data("expression.diff")
self.assertIn("\033[0m", actual)
@patch("black.dump_to_file", dump_to_stderr)
- def test_function(self) -> None:
- source, expected = read_data("function")
- actual = fs(source)
+ def _test_wip(self) -> None:
+ source, expected = read_data("wip")
+ sys.settrace(tracefunc)
+ mode = replace(
+ DEFAULT_MODE,
+ experimental_string_processing=False,
+ target_versions={black.TargetVersion.PY38},
+ )
+ actual = fs(source, mode=mode)
+ sys.settrace(None)
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
black.assert_stable(source, actual, black.FileMode())
+ @unittest.expectedFailure
@patch("black.dump_to_file", dump_to_stderr)
- def test_function2(self) -> None:
- source, expected = read_data("function2")
+ def test_trailing_comma_optional_parens_stability1(self) -> None:
+ source, _expected = read_data("trailing_comma_optional_parens1")
actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
+ black.assert_stable(source, actual, DEFAULT_MODE)
+ @unittest.expectedFailure
@patch("black.dump_to_file", dump_to_stderr)
- def test_function_trailing_comma(self) -> None:
- source, expected = read_data("function_trailing_comma")
+ def test_trailing_comma_optional_parens_stability2(self) -> None:
+ source, _expected = read_data("trailing_comma_optional_parens2")
actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
+ black.assert_stable(source, actual, DEFAULT_MODE)
+ @unittest.expectedFailure
@patch("black.dump_to_file", dump_to_stderr)
- def test_expression(self) -> None:
- source, expected = read_data("expression")
+ def test_trailing_comma_optional_parens_stability3(self) -> None:
+ source, _expected = read_data("trailing_comma_optional_parens3")
actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
+ 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)
- black.assert_stable(source, actual, black.FileMode())
- if sys.version_info >= (3, 8):
- black.assert_equivalent(source, 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)
+
+ @patch("black.dump_to_file", dump_to_stderr)
+ 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)
def test_pep_572_version_detection(self) -> None:
source, _ = read_data("pep_572")
self.assertFormatEqual(expected, actual)
with patch("black.dump_to_file", dump_to_stderr):
black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
+ black.assert_stable(source, actual, DEFAULT_MODE)
def test_expression_diff(self) -> None:
source, _ = read_data("expression.py")
+ config = THIS_DIR / "data" / "empty_pyproject.toml"
expected, _ = read_data("expression.diff")
tmp_file = Path(black.dump_to_file(source))
diff_header = re.compile(
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)])
+ result = BlackRunner().invoke(
+ black.main, ["--diff", str(tmp_file), f"--config={config}"]
+ )
self.assertEqual(result.exit_code, 0)
finally:
os.unlink(tmp_file)
actual = result.output
actual = diff_header.sub(DETERMINISTIC_HEADER, actual)
- actual = actual.rstrip() + "\n" # the diff output has a trailing space
if expected != actual:
dump = black.dump_to_file(actual)
msg = (
def test_expression_diff_with_color(self) -> None:
source, _ = read_data("expression.py")
+ config = THIS_DIR / "data" / "empty_pyproject.toml"
expected, _ = read_data("expression.diff")
tmp_file = Path(black.dump_to_file(source))
try:
result = BlackRunner().invoke(
- black.main, ["--diff", "--color", str(tmp_file)]
+ black.main, ["--diff", "--color", str(tmp_file), f"--config={config}"]
)
finally:
os.unlink(tmp_file)
self.assertIn("\033[31m", actual)
self.assertIn("\033[0m", actual)
- @patch("black.dump_to_file", dump_to_stderr)
- def test_fstring(self) -> None:
- source, expected = read_data("fstring")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @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, black.FileMode())
- 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, black.FileMode())
- mode = black.FileMode(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(self) -> None:
- source, expected = read_data("docstring")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- def test_long_strings(self) -> None:
- """Tests for splitting long strings."""
- source, expected = read_data("long_strings")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_long_strings__edge_case(self) -> None:
- """Edge-case tests for splitting long strings."""
- source, expected = read_data("long_strings__edge_case")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_long_strings__regression(self) -> None:
- """Regression tests for splitting long strings."""
- source, expected = read_data("long_strings__regression")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_slices(self) -> None:
- source, expected = read_data("slices")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_comments(self) -> None:
- source, expected = read_data("comments")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_comments2(self) -> None:
- source, expected = read_data("comments2")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_comments3(self) -> None:
- source, expected = read_data("comments3")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_comments4(self) -> None:
- source, expected = read_data("comments4")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
+ def test_skip_magic_trailing_comma(self) -> None:
+ source, _ = read_data("expression.py")
+ expected, _ = read_data("expression_skip_magic_trailing_comma.diff")
+ tmp_file = Path(black.dump_to_file(source))
+ 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, ["-C", "--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)
+ actual = actual.rstrip() + "\n" # the diff output has a trailing space
+ if expected != actual:
+ dump = black.dump_to_file(actual)
+ 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}"
+ )
+ self.assertEqual(expected, actual, msg)
@patch("black.dump_to_file", dump_to_stderr)
- def test_comments5(self) -> None:
- source, expected = read_data("comments5")
+ def test_async_as_identifier(self) -> None:
+ source_path = (THIS_DIR / "data" / "async_as_identifier.py").resolve()
+ source, expected = read_data("async_as_identifier")
actual = fs(source)
self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
+ major, minor = sys.version_info[:2]
+ if major < 3 or (major <= 3 and minor < 7):
+ black.assert_equivalent(source, actual)
+ black.assert_stable(source, actual, DEFAULT_MODE)
+ # ensure black can parse this when the target is 3.6
+ self.invokeBlack([str(source_path), "--target-version", "py36"])
+ # but not on 3.7, because async/await is no longer an identifier
+ self.invokeBlack([str(source_path), "--target-version", "py37"], exit_code=123)
@patch("black.dump_to_file", dump_to_stderr)
- def test_comments6(self) -> None:
- source, expected = read_data("comments6")
+ def test_python37(self) -> None:
+ source_path = (THIS_DIR / "data" / "python37.py").resolve()
+ source, expected = read_data("python37")
actual = fs(source)
self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
+ major, minor = sys.version_info[:2]
+ if major > 3 or (major == 3 and minor >= 7):
+ black.assert_equivalent(source, actual)
+ black.assert_stable(source, actual, DEFAULT_MODE)
+ # ensure black can parse this when the target is 3.7
+ self.invokeBlack([str(source_path), "--target-version", "py37"])
+ # 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_comments7(self) -> None:
- source, expected = read_data("comments7")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
+ 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_spc))
+ self.assertFormatEqual(contents_spc, fs(contents_tab))
- @patch("black.dump_to_file", dump_to_stderr)
- def test_comment_after_escaped_newline(self) -> None:
- source, expected = read_data("comment_after_escaped_newline")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
+ contents_tab = "if 1:\n\tif 2:\n\t\tpass\n\t\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_spc))
+ self.assertFormatEqual(contents_spc, fs(contents_tab))
- @patch("black.dump_to_file", dump_to_stderr)
- def test_cantfit(self) -> None:
- source, expected = read_data("cantfit")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
+ # mixed tabs and spaces (valid Python 2 code)
+ contents_tab = "if 1:\n if 2:\n\t\tpass\n\t# comment\n pass\n"
+ contents_spc = "if 1:\n if 2:\n pass\n # comment\n pass\n"
+ self.assertFormatEqual(contents_spc, fs(contents_spc))
+ self.assertFormatEqual(contents_spc, fs(contents_tab))
- @patch("black.dump_to_file", dump_to_stderr)
- def test_import_spacing(self) -> None:
- source, expected = read_data("import_spacing")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
+ contents_tab = "if 1:\n if 2:\n\t\tpass\n\t\t# comment\n pass\n"
+ contents_spc = "if 1:\n if 2:\n pass\n # comment\n pass\n"
+ self.assertFormatEqual(contents_spc, fs(contents_spc))
+ self.assertFormatEqual(contents_spc, fs(contents_tab))
- @patch("black.dump_to_file", dump_to_stderr)
- def test_composition(self) -> None:
- source, expected = read_data("composition")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
+ def test_report_verbose(self) -> None:
+ report = Report(verbose=True)
+ out_lines = []
+ err_lines = []
- @patch("black.dump_to_file", dump_to_stderr)
- def test_empty_lines(self) -> None:
- source, expected = read_data("empty_lines")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
+ def out(msg: str, **kwargs: Any) -> None:
+ out_lines.append(msg)
- @patch("black.dump_to_file", dump_to_stderr)
- def test_remove_parens(self) -> None:
- source, expected = read_data("remove_parens")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
+ def err(msg: str, **kwargs: Any) -> None:
+ err_lines.append(msg)
- @patch("black.dump_to_file", dump_to_stderr)
- def test_string_prefixes(self) -> None:
- source, expected = read_data("string_prefixes")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_numeric_literals(self) -> None:
- source, expected = read_data("numeric_literals")
- mode = black.FileMode(target_versions=black.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 = black.FileMode(target_versions=black.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_py2(self) -> None:
- source, expected = read_data("numeric_literals_py2")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_python2(self) -> None:
- source, expected = read_data("python2")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_python2_print_function(self) -> None:
- source, expected = read_data("python2_print_function")
- mode = black.FileMode(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_python2_unicode_literals(self) -> None:
- source, expected = read_data("python2_unicode_literals")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_stub(self) -> None:
- mode = black.FileMode(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()
- source, expected = read_data("async_as_identifier")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- major, minor = sys.version_info[:2]
- if major < 3 or (major <= 3 and minor < 7):
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
- # ensure black can parse this when the target is 3.6
- self.invokeBlack([str(source_path), "--target-version", "py36"])
- # but not on 3.7, because async/await is no longer an identifier
- self.invokeBlack([str(source_path), "--target-version", "py37"], exit_code=123)
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_python37(self) -> None:
- source_path = (THIS_DIR / "data" / "python37.py").resolve()
- source, expected = read_data("python37")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- major, minor = sys.version_info[:2]
- if major > 3 or (major == 3 and minor >= 7):
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
- # ensure black can parse this when the target is 3.7
- self.invokeBlack([str(source_path), "--target-version", "py37"])
- # 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, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_fmtonoff(self) -> None:
- source, expected = read_data("fmtonoff")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_fmtonoff2(self) -> None:
- source, expected = read_data("fmtonoff2")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_fmtonoff3(self) -> None:
- source, expected = read_data("fmtonoff3")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_fmtonoff4(self) -> None:
- source, expected = read_data("fmtonoff4")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_remove_empty_parentheses_after_class(self) -> None:
- source, expected = read_data("class_blank_parentheses")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_new_line_between_class_and_code(self) -> None:
- source, expected = read_data("class_methods_new_line")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_bracket_match(self) -> None:
- source, expected = read_data("bracketmatch")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_tuple_assign(self) -> None:
- source, expected = read_data("tupleassign")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_beginning_backslash(self) -> None:
- source, expected = read_data("beginning_backslash")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- 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_spc))
- self.assertFormatEqual(contents_spc, fs(contents_tab))
-
- contents_tab = "if 1:\n\tif 2:\n\t\tpass\n\t\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_spc))
- self.assertFormatEqual(contents_spc, fs(contents_tab))
-
- # mixed tabs and spaces (valid Python 2 code)
- contents_tab = "if 1:\n if 2:\n\t\tpass\n\t# comment\n pass\n"
- contents_spc = "if 1:\n if 2:\n pass\n # comment\n pass\n"
- self.assertFormatEqual(contents_spc, fs(contents_spc))
- self.assertFormatEqual(contents_spc, fs(contents_tab))
-
- contents_tab = "if 1:\n if 2:\n\t\tpass\n\t\t# comment\n pass\n"
- contents_spc = "if 1:\n if 2:\n pass\n # comment\n pass\n"
- self.assertFormatEqual(contents_spc, fs(contents_spc))
- self.assertFormatEqual(contents_spc, fs(contents_tab))
-
- def test_report_verbose(self) -> None:
- report = black.Report(verbose=True)
- out_lines = []
- err_lines = []
-
- def out(msg: str, **kwargs: Any) -> None:
- out_lines.append(msg)
-
- 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)
black.lib2to3_parse(py3_only, {TargetVersion.PY36})
black.lib2to3_parse(py3_only, {TargetVersion.PY27, TargetVersion.PY36})
+ def test_get_features_used_decorator(self) -> None:
+ # Test the feature detection of new decorator syntax
+ # since this makes some test cases of test_get_features_used()
+ # fails if it fails, this is tested first so that a useful case
+ # is identified
+ simples, relaxed = read_data("decorators")
+ # skip explanation comments at the top of the file
+ for simple_test in simples.split("##")[1:]:
+ node = black.lib2to3_parse(simple_test)
+ decorator = str(node.children[0].children[0]).strip()
+ self.assertNotIn(
+ Feature.RELAXED_DECORATORS,
+ black.get_features_used(node),
+ msg=(
+ f"decorator '{decorator}' follows python<=3.8 syntax"
+ "but is detected as 3.9+"
+ # f"The full node is\n{node!r}"
+ ),
+ )
+ # skip the '# output' comment at the top of the output part
+ for relaxed_test in relaxed.split("##")[1:]:
+ node = black.lib2to3_parse(relaxed_test)
+ decorator = str(node.children[0].children[0]).strip()
+ self.assertIn(
+ Feature.RELAXED_DECORATORS,
+ black.get_features_used(node),
+ msg=(
+ f"decorator '{decorator}' uses python3.9+ syntax"
+ "but is detected as python<=3.8"
+ # f"The full node is\n{node!r}"
+ ),
+ )
+
def test_get_features_used(self) -> None:
node = black.lib2to3_parse("def f(*, arg): ...\n")
self.assertEqual(black.get_features_used(node), set())
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 test_format_file_contents(self) -> None:
empty = ""
- mode = black.FileMode()
+ mode = DEFAULT_MODE
with self.assertRaises(black.NothingChanged):
black.format_file_contents(empty, mode=mode, fast=False)
just_nl = "\n"
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 = black.FileMode()
- 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(src, cache)
-
- def test_cache_single_file_already_cached(self) -> None:
- mode = black.FileMode()
- 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(close=False)
- def test_cache_multiple_files(self) -> None:
- mode = black.FileMode()
- 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(one, cache)
- self.assertIn(two, cache)
-
- def test_no_cache_when_writeback_diff(self) -> None:
- mode = black.FileMode()
- with cache_dir() as workspace:
- src = (workspace / "test.py").resolve()
- with src.open("w") as fobj:
- fobj.write("print('hello')")
- self.invokeBlack([str(src), "--diff"])
- cache_file = black.get_cache_file(mode)
- self.assertFalse(cache_file.exists())
-
- def test_no_cache_when_stdin(self) -> None:
- mode = black.FileMode()
- 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 = black.FileMode()
- with cache_dir():
- self.assertEqual(black.read_cache(mode), {})
-
- def test_write_cache_read_cache(self) -> None:
- mode = black.FileMode()
- with cache_dir() as workspace:
- src = (workspace / "test.py").resolve()
- src.touch()
- black.write_cache({}, [src], mode)
- cache = black.read_cache(mode)
- self.assertIn(src, cache)
- self.assertEqual(cache[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 = {cached: black.get_cache_info(cached), 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 = black.FileMode()
- with cache_dir(exists=False) as workspace:
- self.assertFalse(workspace.exists())
- black.write_cache({}, [], mode)
- self.assertTrue(workspace.exists())
-
- @event_loop(close=False)
- def test_failed_formatting_does_not_get_cached(self) -> None:
- mode = black.FileMode()
- 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(failing, cache)
- self.assertIn(clean, cache)
-
- def test_write_cache_write_fail(self) -> None:
- mode = black.FileMode()
- with cache_dir(), patch.object(Path, "open") as mock:
- mock.side_effect = OSError
- black.write_cache({}, [], mode)
-
- @event_loop(close=False)
+ @event_loop()
@patch("black.ProcessPoolExecutor", MagicMock(side_effect=OSError))
def test_works_in_mono_process_only_environment(self) -> None:
with cache_dir() as workspace:
f.write_text('print("hello")\n')
self.invokeBlack([str(workspace)])
- @event_loop(close=False)
+ @event_loop()
def test_check_diff_use_together(self) -> None:
with cache_dir():
# Files which will be reformatted.
symlink = workspace / "broken_link.py"
try:
symlink.symlink_to("nonexistent.py")
- except OSError as e:
+ except (OSError, NotImplementedError) as e:
self.skipTest(f"Can't create symlinks: {e}")
self.invokeBlack([str(workspace.resolve())])
- def test_read_cache_line_lengths(self) -> None:
- mode = black.FileMode()
- short_mode = black.FileMode(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(path, one)
- two = black.read_cache(short_mode)
- self.assertNotIn(path, two)
-
- def test_tricky_unicode_symbols(self) -> None:
- source, expected = read_data("tricky_unicode_symbols")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
-
- def test_single_file_force_pyi(self) -> None:
- reg_mode = black.FileMode()
- pyi_mode = black.FileMode(is_pyi=True)
- contents, expected = read_data("force_pyi")
+ def test_single_file_force_pyi(self) -> None:
+ pyi_mode = replace(DEFAULT_MODE, is_pyi=True)
+ contents, expected = read_data("force_pyi")
with cache_dir() as workspace:
path = (workspace / "file.py").resolve()
with open(path, "w") as fh:
actual = fh.read()
# verify cache with --pyi is separate
pyi_cache = black.read_cache(pyi_mode)
- self.assertIn(path, pyi_cache)
- normal_cache = black.read_cache(reg_mode)
- self.assertNotIn(path, normal_cache)
- self.assertEqual(actual, expected)
+ self.assertIn(str(path), pyi_cache)
+ normal_cache = black.read_cache(DEFAULT_MODE)
+ self.assertNotIn(str(path), normal_cache)
+ self.assertFormatEqual(expected, actual)
+ black.assert_equivalent(contents, actual)
+ black.assert_stable(contents, actual, pyi_mode)
- @event_loop(close=False)
+ @event_loop()
def test_multi_file_force_pyi(self) -> None:
- reg_mode = black.FileMode()
- pyi_mode = black.FileMode(is_pyi=True)
+ reg_mode = DEFAULT_MODE
+ pyi_mode = replace(DEFAULT_MODE, is_pyi=True)
contents, expected = read_data("force_pyi")
with cache_dir() as workspace:
paths = [
pyi_cache = black.read_cache(pyi_mode)
normal_cache = black.read_cache(reg_mode)
for path in paths:
- self.assertIn(path, pyi_cache)
- self.assertNotIn(path, normal_cache)
+ self.assertIn(str(path), pyi_cache)
+ self.assertNotIn(str(path), normal_cache)
def test_pipe_force_pyi(self) -> None:
source, expected = read_data("force_pyi")
self.assertFormatEqual(actual, expected)
def test_single_file_force_py36(self) -> None:
- reg_mode = black.FileMode()
- py36_mode = black.FileMode(target_versions=black.PY36_VERSIONS)
+ reg_mode = DEFAULT_MODE
+ py36_mode = replace(DEFAULT_MODE, target_versions=PY36_VERSIONS)
source, expected = read_data("force_py36")
with cache_dir() as workspace:
path = (workspace / "file.py").resolve()
actual = fh.read()
# verify cache with --target-version is separate
py36_cache = black.read_cache(py36_mode)
- self.assertIn(path, py36_cache)
+ self.assertIn(str(path), py36_cache)
normal_cache = black.read_cache(reg_mode)
- self.assertNotIn(path, normal_cache)
+ self.assertNotIn(str(path), normal_cache)
self.assertEqual(actual, expected)
- @event_loop(close=False)
+ @event_loop()
def test_multi_file_force_py36(self) -> None:
- reg_mode = black.FileMode()
- py36_mode = black.FileMode(target_versions=black.PY36_VERSIONS)
+ reg_mode = DEFAULT_MODE
+ py36_mode = replace(DEFAULT_MODE, target_versions=PY36_VERSIONS)
source, expected = read_data("force_py36")
with cache_dir() as workspace:
paths = [
pyi_cache = black.read_cache(py36_mode)
normal_cache = black.read_cache(reg_mode)
for path in paths:
- self.assertIn(path, pyi_cache)
- self.assertNotIn(path, normal_cache)
-
- def test_collections(self) -> None:
- source, expected = read_data("collections")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
+ self.assertIn(str(path), pyi_cache)
+ self.assertNotIn(str(path), normal_cache)
def test_pipe_force_py36(self) -> None:
source, expected = read_data("force_py36")
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?$")
- exclude = re.compile(r"/exclude/|/\.definitely_exclude/")
- report = black.Report()
- gitignore = PathSpec.from_lines("gitwildmatch", [])
- sources: List[Path] = []
- expected = [
- Path(path / "b/dont_exclude/a.py"),
- Path(path / "b/dont_exclude/a.pyi"),
- ]
- this_abs = THIS_DIR.resolve()
- sources.extend(
- black.gen_python_files(
- path.iterdir(), this_abs, include, [exclude], report, gitignore
+ def test_reformat_one_with_stdin(self) -> None:
+ with patch(
+ "black.format_stdin_to_stdout",
+ return_value=lambda *args, **kwargs: black.Changed.YES,
+ ) as fsts:
+ report = MagicMock()
+ path = Path("-")
+ black.reformat_one(
+ path,
+ fast=True,
+ write_back=black.WriteBack.YES,
+ mode=DEFAULT_MODE,
+ report=report,
)
- )
- self.assertEqual(sorted(expected), sorted(sources))
-
- def test_gitignore_exclude(self) -> None:
- path = THIS_DIR / "data" / "include_exclude_tests"
- include = re.compile(r"\.pyi?$")
- 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], report, gitignore
+ fsts.assert_called_once()
+ report.done.assert_called_with(path, black.Changed.YES)
+
+ 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,
)
- )
- self.assertEqual(sorted(expected), sorted(sources))
-
- 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] = []
- expected = [
- Path(path / "b/exclude/a.pie"),
- Path(path / "b/exclude/a.py"),
- Path(path / "b/exclude/a.pyi"),
- Path(path / "b/dont_exclude/a.pie"),
- Path(path / "b/dont_exclude/a.py"),
- Path(path / "b/dont_exclude/a.pyi"),
- Path(path / "b/.definitely_exclude/a.pie"),
- Path(path / "b/.definitely_exclude/a.py"),
- Path(path / "b/.definitely_exclude/a.pyi"),
- ]
- this_abs = THIS_DIR.resolve()
- sources.extend(
- black.gen_python_files(
- path.iterdir(),
- this_abs,
- empty,
- [re.compile(black.DEFAULT_EXCLUDES)],
- report,
- gitignore,
+ fsts.assert_called_once_with(
+ fast=True, write_back=black.WriteBack.YES, mode=DEFAULT_MODE
)
- )
- self.assertEqual(sorted(expected), sorted(sources))
-
- def test_empty_exclude(self) -> None:
- path = THIS_DIR / "data" / "include_exclude_tests"
- report = black.Report()
- gitignore = PathSpec.from_lines("gitwildmatch", [])
- empty = re.compile(r"")
- sources: List[Path] = []
- expected = [
- Path(path / "b/dont_exclude/a.py"),
- Path(path / "b/dont_exclude/a.pyi"),
- Path(path / "b/exclude/a.py"),
- Path(path / "b/exclude/a.pyi"),
- Path(path / "b/.definitely_exclude/a.py"),
- Path(path / "b/.definitely_exclude/a.pyi"),
- ]
- this_abs = THIS_DIR.resolve()
- sources.extend(
- black.gen_python_files(
- path.iterdir(),
- this_abs,
- re.compile(black.DEFAULT_INCLUDES),
- [empty],
- report,
- gitignore,
+ # __BLACK_STDIN_FILENAME__ should have been stripped
+ report.done.assert_called_with(expected, black.Changed.YES)
+
+ 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()
+ p = "foo.pyi"
+ 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,
)
- )
- self.assertEqual(sorted(expected), sorted(sources))
+ 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_ipynb(self) -> None:
+ with patch(
+ "black.format_stdin_to_stdout",
+ return_value=lambda *args, **kwargs: black.Changed.YES,
+ ) as fsts:
+ report = MagicMock()
+ p = "foo.ipynb"
+ 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,
+ )
+ 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:
+ with patch(
+ "black.format_stdin_to_stdout",
+ return_value=lambda *args, **kwargs: black.Changed.YES,
+ ) as fsts:
+ report = MagicMock()
+ # Even with an existing file, since we are forcing stdin, black
+ # should output to stdout and not modify the file inplace
+ p = Path(str(THIS_DIR / "data/collections.py"))
+ # Make sure is_file actually returns True
+ self.assertTrue(p.is_file())
+ 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,
+ )
+ fsts.assert_called_once()
+ # __BLACK_STDIN_FILENAME__ should have been stripped
+ report.done.assert_called_with(expected, black.Changed.YES)
+
+ 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_include_exclude(self) -> None:
- for option in ["--include", "--exclude"]:
+ 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
+ )
+
+ def test_required_version_does_not_match_version(self) -> None:
+ self.invokeBlack(
+ ["--required-version", "20.99b"], exit_code=1, ignore_config=True
+ )
+
def test_preserves_line_endings(self) -> None:
with TemporaryDirectory() as workspace:
test_file = Path(workspace) / "test.py"
black.main, ["-", "--fast"], input=BytesIO(contents.encode("utf8"))
)
self.assertEqual(result.exit_code, 0)
- output = runner.stdout_bytes
+ output = result.stdout_bytes
self.assertIn(nl.encode("utf8"), output)
if nl == "\n":
self.assertNotIn(b"\r\n", output)
with self.assertRaises(AssertionError):
black.assert_equivalent("{}", "None")
- def test_symlink_out_of_root_directory(self) -> None:
- path = MagicMock()
- root = THIS_DIR
- child = MagicMock()
- include = re.compile(black.DEFAULT_INCLUDES)
- exclude = re.compile(black.DEFAULT_EXCLUDES)
- report = black.Report()
- gitignore = PathSpec.from_lines("gitwildmatch", [])
- # `child` should behave like a symlink which resolved path is clearly
- # outside of the `root` directory.
- path.iterdir.return_value = [child]
- child.resolve.return_value = Path("/a/b/c")
- child.as_posix.return_value = "/a/b/c"
- child.is_symlink.return_value = True
- try:
- list(
- black.gen_python_files(
- path.iterdir(), root, include, exclude, report, gitignore
- )
- )
- except ValueError as ve:
- self.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):
- list(
- black.gen_python_files(
- path.iterdir(), root, include, exclude, report, gitignore
- )
- )
- path.iterdir.assert_called()
- self.assertEqual(path.iterdir.call_count, 2)
- child.resolve.assert_called()
- self.assertEqual(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
+ from click import _unicodefun
except ModuleNotFoundError:
self.skipTest("Incompatible Click version")
if not hasattr(_unicodefun, "_verify_python3_env"):
with patch("locale.getpreferredencoding") as gpe:
gpe.return_value = "ASCII"
with self.assertRaises(RuntimeError):
- _unicodefun._verify_python3_env()
+ _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()
+ _unicodefun._verify_python3_env() # type: ignore
except RuntimeError as re:
self.fail(f"`patch_click()` failed, exception still raised: {re}")
critical=fail,
log=fail,
):
- ff(THIS_FILE)
-
- @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
- def test_blackd_main(self) -> None:
- with patch("blackd.web.run_app"):
- result = CliRunner().invoke(blackd.main, [])
- if result.exception is not None:
- raise result.exception
- self.assertEqual(result.exit_code, 0)
+ ff(THIS_DIR / "util.py")
def test_invalid_config_return_code(self) -> None:
tmp_file = Path(black.dump_to_file())
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
-class BlackDTestCase(AioHTTPTestCase):
- async def get_application(self) -> web.Application:
- return blackd.make_app()
-
- # TODO: remove these decorators once the below is released
- # https://github.com/aio-libs/aiohttp/pull/3727
- @skip_if_exception("ClientOSError")
- @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
- @unittest_run_loop
- async def test_blackd_request_needs_formatting(self) -> None:
- response = await self.client.post("/", data=b"print('hello world')")
- self.assertEqual(response.status, 200)
- self.assertEqual(response.charset, "utf8")
- self.assertEqual(await response.read(), b'print("hello world")\n')
-
- @skip_if_exception("ClientOSError")
- @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
- @unittest_run_loop
- async def test_blackd_request_no_change(self) -> None:
- response = await self.client.post("/", data=b'print("hello world")\n')
- self.assertEqual(response.status, 204)
- self.assertEqual(await response.read(), b"")
-
- @skip_if_exception("ClientOSError")
- @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
- @unittest_run_loop
- async def test_blackd_request_syntax_error(self) -> None:
- response = await self.client.post("/", data=b"what even ( is")
- self.assertEqual(response.status, 400)
- content = await response.text()
- self.assertTrue(
- content.startswith("Cannot parse"),
- msg=f"Expected error to start with 'Cannot parse', got {repr(content)}",
+ user_config_path = Path.home() / ".black"
+ self.assertEqual(
+ black.files.find_user_pyproject_toml(), user_config_path.resolve()
)
- @skip_if_exception("ClientOSError")
- @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
- @unittest_run_loop
- async def test_blackd_unsupported_version(self) -> None:
- response = await self.client.post(
- "/", data=b"what", headers={blackd.PROTOCOL_VERSION_HEADER: "2"}
+ 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"
)
- self.assertEqual(response.status, 501)
-
- @skip_if_exception("ClientOSError")
- @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
- @unittest_run_loop
- async def test_blackd_supported_version(self) -> None:
- response = await self.client.post(
- "/", data=b"what", headers={blackd.PROTOCOL_VERSION_HEADER: "1"}
+ 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'
)
- self.assertEqual(response.status, 200)
-
- @skip_if_exception("ClientOSError")
- @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
- @unittest_run_loop
- async def test_blackd_invalid_python_variant(self) -> None:
- async def check(header_value: str, expected_status: int = 400) -> None:
- response = await self.client.post(
- "/", data=b"what", headers={blackd.PYTHON_VARIANT_HEADER: header_value}
+ expected = 'def foo():\n """Testing\n Testing"""\n print "Foo"\n'
+
+ result = BlackRunner().invoke(
+ black.main,
+ ["-", "-q", "--target-version=py27"],
+ input=BytesIO(source),
+ )
+
+ self.assertEqual(result.exit_code, 0)
+ actual = result.stdout
+ 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}
)
- self.assertEqual(response.status, expected_status)
-
- await check("lol")
- await check("ruby3.5")
- await check("pyi3.6")
- await check("py1.5")
- await check("2.8")
- await check("py2.8")
- await check("3.0")
- await check("pypy3.0")
- await check("jython3.4")
-
- @skip_if_exception("ClientOSError")
- @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
- @unittest_run_loop
- async def test_blackd_pyi(self) -> None:
- source, expected = read_data("stub.pyi")
- response = await self.client.post(
- "/", data=source, headers={blackd.PYTHON_VARIANT_HEADER: "pyi"}
+ 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?$",
+ exclude=r"/exclude/|/\.definitely_exclude/",
)
- self.assertEqual(response.status, 200)
- self.assertEqual(await response.text(), expected)
- @skip_if_exception("ClientOSError")
- @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
- @unittest_run_loop
- async def test_blackd_diff(self) -> None:
- diff_header = re.compile(
- rf"(In|Out)\t\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d\.\d\d\d\d\d\d \+\d\d\d\d"
+ def test_gitignore_used_as_default(self) -> None:
+ base = Path(DATA_DIR / "include_exclude_tests")
+ expected = [
+ base / "b/.definitely_exclude/a.py",
+ base / "b/.definitely_exclude/a.pyi",
+ ]
+ src = [base / "b/"]
+ assert_collected_sources(src, expected, extend_exclude=r"/exclude/")
+
+ @patch("black.find_project_root", lambda *args: THIS_DIR.resolve())
+ def test_exclude_for_issue_1572(self) -> None:
+ # Exclude shouldn't touch files that were explicitly given to Black through the
+ # CLI. Exclude is supposed to only apply to the recursive discovery of files.
+ # https://github.com/psf/black/issues/1572
+ path = DATA_DIR / "include_exclude_tests"
+ src = [path / "b/exclude/a.py"]
+ expected = [path / "b/exclude/a.py"]
+ assert_collected_sources(src, expected, include="", exclude=r"/exclude/|a\.py")
+
+ def test_gitignore_exclude(self) -> None:
+ path = THIS_DIR / "data" / "include_exclude_tests"
+ include = re.compile(r"\.pyi?$")
+ 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)
- source, _ = read_data("blackd_diff.py")
- expected, _ = read_data("blackd_diff.diff")
+ 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)
- response = await self.client.post(
- "/", data=source, headers={blackd.DIFF_HEADER: "true"}
+ 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)]
)
- self.assertEqual(response.status, 200)
+ assert result.exit_code == 1
+ assert result.stderr_bytes is not None
- actual = await response.text()
- actual = diff_header.sub(DETERMINISTIC_HEADER, actual)
- self.assertEqual(actual, expected)
+ 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 = DATA_DIR / "include_exclude_tests"
+ src = [path]
+ expected = [
+ Path(path / "b/exclude/a.pie"),
+ Path(path / "b/exclude/a.py"),
+ Path(path / "b/exclude/a.pyi"),
+ Path(path / "b/dont_exclude/a.pie"),
+ Path(path / "b/dont_exclude/a.py"),
+ Path(path / "b/dont_exclude/a.pyi"),
+ 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"),
+ ]
+ # Setting exclude explicitly to an empty string to block .gitignore usage.
+ assert_collected_sources(src, expected, include="", exclude="")
- @skip_if_exception("ClientOSError")
- @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
- @unittest_run_loop
- async def test_blackd_python_variant(self) -> None:
- code = (
- "def f(\n"
- " and_has_a_bunch_of,\n"
- " very_long_arguments_too,\n"
- " and_lots_of_them_as_well_lol,\n"
- " **and_very_long_keyword_arguments\n"
- "):\n"
- " pass\n"
+ def test_extend_exclude(self) -> None:
+ path = DATA_DIR / "include_exclude_tests"
+ src = [path]
+ expected = [
+ Path(path / "b/exclude/a.py"),
+ Path(path / "b/dont_exclude/a.py"),
+ ]
+ assert_collected_sources(
+ src, expected, exclude=r"\.pyi$", extend_exclude=r"\.definitely_exclude"
)
- async def check(header_value: str, expected_status: int) -> None:
- response = await self.client.post(
- "/", data=code, headers={blackd.PYTHON_VARIANT_HEADER: header_value}
+ def test_symlink_out_of_root_directory(self) -> None:
+ path = MagicMock()
+ root = THIS_DIR.resolve()
+ child = MagicMock()
+ include = re.compile(black.DEFAULT_INCLUDES)
+ exclude = re.compile(black.DEFAULT_EXCLUDES)
+ report = black.Report()
+ gitignore = PathSpec.from_lines("gitwildmatch", [])
+ # `child` should behave like a symlink which resolved path is clearly
+ # outside of the `root` directory.
+ path.iterdir.return_value = [child]
+ child.resolve.return_value = Path("/a/b/c")
+ child.as_posix.return_value = "/a/b/c"
+ child.is_symlink.return_value = True
+ try:
+ list(
+ black.gen_python_files(
+ path.iterdir(),
+ root,
+ include,
+ exclude,
+ None,
+ None,
+ report,
+ gitignore,
+ verbose=False,
+ quiet=False,
+ )
)
- self.assertEqual(
- response.status, expected_status, msg=await response.text()
+ except ValueError as 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 pytest.raises(ValueError):
+ list(
+ black.gen_python_files(
+ path.iterdir(),
+ root,
+ include,
+ exclude,
+ None,
+ None,
+ report,
+ gitignore,
+ verbose=False,
+ quiet=False,
+ )
)
+ path.iterdir.assert_called()
+ assert path.iterdir.call_count == 2
+ child.resolve.assert_called()
+ assert child.resolve.call_count == 2
+ child.is_symlink.assert_called()
+ assert child.is_symlink.call_count == 2
+
+ @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")
+
+ @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,
+ )
- await check("3.6", 200)
- await check("py3.6", 200)
- await check("3.6,3.7", 200)
- await check("3.6,py3.7", 200)
- await check("py36,py37", 200)
- await check("36", 200)
- await check("3.6.4", 200)
-
- await check("2", 204)
- await check("2.7", 204)
- await check("py2.7", 204)
- await check("3.4", 204)
- await check("py3.4", 204)
- await check("py34,py36", 204)
- await check("34", 204)
-
- @skip_if_exception("ClientOSError")
- @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
- @unittest_run_loop
- async def test_blackd_line_length(self) -> None:
- response = await self.client.post(
- "/", data=b'print("hello")\n', headers={blackd.LINE_LENGTH_HEADER: "7"}
+ @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,
)
- self.assertEqual(response.status, 200)
-
- @skip_if_exception("ClientOSError")
- @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
- @unittest_run_loop
- async def test_blackd_invalid_line_length(self) -> None:
- response = await self.client.post(
- "/", data=b'print("hello")\n', headers={blackd.LINE_LENGTH_HEADER: "NaN"}
+
+ @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(response.status, 400)
- @skip_if_exception("ClientOSError")
- @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
- @unittest_run_loop
- async def test_blackd_response_black_version_header(self) -> None:
- response = await self.client.post("/")
- self.assertIsNotNone(response.headers.get(blackd.BLACK_VERSION_HEADER))
+ @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,
+ )
-if __name__ == "__main__":
- unittest.main(module="test_black")
+@pytest.mark.python2
+@pytest.mark.parametrize("explicit", [True, False], ids=["explicit", "autodetection"])
+def test_python_2_deprecation_with_target_version(explicit: bool) -> None:
+ args = [
+ "--config",
+ str(THIS_DIR / "empty.toml"),
+ str(DATA_DIR / "python2.py"),
+ "--check",
+ ]
+ if explicit:
+ args.append("--target-version=py27")
+ with cache_dir():
+ result = BlackRunner().invoke(black.main, args)
+ assert "DEPRECATION: Python 2 support will be removed" in result.stderr
+
+
+@pytest.mark.python2
+def test_python_2_deprecation_autodetection_extended() -> None:
+ # this test has a similar construction to test_get_features_used_decorator
+ python2, non_python2 = read_data("python2_detection")
+ for python2_case in python2.split("###"):
+ node = black.lib2to3_parse(python2_case)
+ assert black.detect_target_versions(node) == {TargetVersion.PY27}, python2_case
+ for non_python2_case in non_python2.split("###"):
+ node = black.lib2to3_parse(non_python2_case)
+ assert black.detect_target_versions(node) != {
+ TargetVersion.PY27
+ }, non_python2_case
+
+
+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[[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 event != "call":
+ return tracefunc
+
+ stack = len(inspect.stack()) - 19
+ stack *= 2
+ filename = frame.f_code.co_filename
+ lineno = frame.f_lineno
+ func_sig_lineno = lineno - 1
+ funcname = black_source_lines[func_sig_lineno].strip()
+ while funcname.startswith("@"):
+ func_sig_lineno += 1
+ funcname = black_source_lines[func_sig_lineno].strip()
+ if "black/__init__.py" in filename:
+ print(f"{' ' * stack}{lineno}:{funcname}")
+ return tracefunc
projects / etc / vim.git / blobdiff