from concurrent.futures import ThreadPoolExecutor
from contextlib import contextmanager
from dataclasses import replace
-from functools import partial
import inspect
from io import BytesIO, TextIOWrapper
import os
Iterator,
TypeVar,
)
+import pytest
import unittest
from unittest.mock import patch, MagicMock
import black
from black import Feature, TargetVersion
+from black.cache import get_cache_file
+from black.debug import DebugVisitor
+from black.report import Report
+import black.files
from pathspec import PathSpec
# Import other test classes
-from tests.util import THIS_DIR, read_data, DETERMINISTIC_HEADER
+from tests.util import (
+ THIS_DIR,
+ read_data,
+ DETERMINISTIC_HEADER,
+ BlackBaseTestCase,
+ DEFAULT_MODE,
+ fs,
+ ff,
+ dump_to_stderr,
+)
from .test_primer import PrimerCLITests # noqa: F401
-DEFAULT_MODE = black.FileMode(experimental_string_processing=True)
-ff = partial(black.format_file_in_place, mode=DEFAULT_MODE, fast=True)
-fs = partial(black.format_str, mode=DEFAULT_MODE)
THIS_FILE = Path(__file__)
PY36_VERSIONS = {
TargetVersion.PY36,
R = TypeVar("R")
-def dump_to_stderr(*output: str) -> str:
- return "\n" + "\n".join(output) + "\n"
-
-
@contextmanager
def cache_dir(exists: bool = True) -> Iterator[Path]:
with TemporaryDirectory() as workspace:
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
sys.stderr = hold_stderr
-class BlackTestCase(unittest.TestCase):
- maxDiff = None
- _diffThreshold = 2 ** 20
-
- 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.assertMultiLineEqual(expected, actual)
-
+class BlackTestCase(BlackBaseTestCase):
def invokeBlack(
self, args: List[str], exit_code: int = 0, ignore_config: bool = True
) -> None:
),
)
- @patch("black.dump_to_file", dump_to_stderr)
- def checkSourceFile(self, name: str, mode: black.FileMode = DEFAULT_MODE) -> None:
- path = THIS_DIR.parent / name
- source, expected = read_data(str(path), data=False)
- actual = fs(source, mode=mode)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, mode)
- self.assertFalse(ff(path))
-
@patch("black.dump_to_file", dump_to_stderr)
def test_empty(self) -> None:
source = expected = ""
os.unlink(tmp_file)
self.assertFormatEqual(expected, actual)
- def test_run_on_test_black(self) -> None:
- self.checkSourceFile("tests/test_black.py")
-
- def test_run_on_test_blackd(self) -> None:
- self.checkSourceFile("tests/test_blackd.py")
-
- def test_black(self) -> None:
- self.checkSourceFile("src/black/__init__.py")
-
- def test_pygram(self) -> None:
- self.checkSourceFile("src/blib2to3/pygram.py")
-
- def test_pytree(self) -> None:
- self.checkSourceFile("src/blib2to3/pytree.py")
-
- def test_conv(self) -> None:
- self.checkSourceFile("src/blib2to3/pgen2/conv.py")
-
- def test_driver(self) -> None:
- self.checkSourceFile("src/blib2to3/pgen2/driver.py")
-
- def test_grammar(self) -> None:
- self.checkSourceFile("src/blib2to3/pgen2/grammar.py")
-
- def test_literals(self) -> None:
- self.checkSourceFile("src/blib2to3/pgen2/literals.py")
-
- def test_parse(self) -> None:
- self.checkSourceFile("src/blib2to3/pgen2/parse.py")
-
- def test_pgen(self) -> None:
- self.checkSourceFile("src/blib2to3/pgen2/pgen.py")
-
- def test_tokenize(self) -> None:
- self.checkSourceFile("src/blib2to3/pgen2/tokenize.py")
-
- def test_token(self) -> None:
- self.checkSourceFile("src/blib2to3/pgen2/token.py")
-
- def test_setup(self) -> None:
- self.checkSourceFile("setup.py")
-
def test_piping(self) -> None:
source, expected = read_data("src/black/__init__", data=False)
result = BlackRunner().invoke(
)
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(
self.assertIn("\033[31m", actual)
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)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, DEFAULT_MODE)
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_function2(self) -> None:
- source, expected = read_data("function2")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, DEFAULT_MODE)
-
@patch("black.dump_to_file", dump_to_stderr)
def _test_wip(self) -> None:
source, expected = read_data("wip")
black.assert_equivalent(source, actual)
black.assert_stable(source, actual, black.FileMode())
- @patch("black.dump_to_file", dump_to_stderr)
- def test_function_trailing_comma(self) -> None:
- source, expected = read_data("function_trailing_comma")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, DEFAULT_MODE)
-
@unittest.expectedFailure
@patch("black.dump_to_file", dump_to_stderr)
def test_trailing_comma_optional_parens_stability1(self) -> None:
black.assert_stable(source, actual, DEFAULT_MODE)
@patch("black.dump_to_file", dump_to_stderr)
- def test_expression(self) -> None:
- source, expected = read_data("expression")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- 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)
@patch("black.dump_to_file", dump_to_stderr)
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)
+ 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_do_not_remove_parens(self) -> None:
+ source, expected = read_data("pep_572_do_not_remove_parens")
+ # the AST safety checks will fail, but that's expected, just make sure no
+ # parentheses are touched
+ actual = black.format_str(source, mode=DEFAULT_MODE)
+ self.assertFormatEqual(expected, actual)
+
def test_pep_572_version_detection(self) -> None:
source, _ = read_data("pep_572")
root = black.lib2to3_parse(source)
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, DEFAULT_MODE)
-
@patch("black.dump_to_file", dump_to_stderr)
def test_pep_570(self) -> None:
source, expected = read_data("pep_570")
@patch("black.dump_to_file", dump_to_stderr)
def test_string_quotes(self) -> None:
source, expected = read_data("string_quotes")
- actual = fs(source)
+ mode = black.Mode(experimental_string_processing=True)
+ actual = fs(source, mode=mode)
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, DEFAULT_MODE)
- mode = replace(DEFAULT_MODE, string_normalization=False)
+ black.assert_stable(source, actual, 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, DEFAULT_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."""
black.assert_equivalent(source, actual)
black.assert_stable(source, actual, mode)
- 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, DEFAULT_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")
self.assertFormatEqual(expected, actual)
black.assert_stable(expected, actual, mode)
- @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, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_percent_precedence(self) -> None:
- source, expected = read_data("percent_precedence")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_comments5(self) -> None:
- source, expected = read_data("comments5")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, DEFAULT_MODE)
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_comments6(self) -> None:
- source, expected = read_data("comments6")
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, DEFAULT_MODE)
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_comments7(self) -> None:
- source, expected = read_data("comments7")
- mode = replace(DEFAULT_MODE, target_versions={black.TargetVersion.PY38})
- actual = fs(source, mode=mode)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @patch("black.dump_to_file", dump_to_stderr)
- def test_composition_no_trailing_comma(self) -> None:
- source, expected = read_data("composition_no_trailing_comma")
- mode = replace(DEFAULT_MODE, target_versions={black.TargetVersion.PY38})
- actual = fs(source, mode=mode)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
@patch("black.dump_to_file", dump_to_stderr)
def test_numeric_literals(self) -> None:
source, expected = read_data("numeric_literals")
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, DEFAULT_MODE)
+ 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_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, DEFAULT_MODE)
+ @pytest.mark.no_python2
+ def test_python2_should_fail_without_optional_install(self) -> None:
+ if sys.version_info < (3, 8):
+ self.skipTest(
+ "Python 3.6 and 3.7 will install typed-ast to work and as such will be"
+ " able to parse Python 2 syntax without explicitly specifying the"
+ " python2 extra"
+ )
+
+ source = "x = 1234l"
+ tmp_file = Path(black.dump_to_file(source))
+ try:
+ runner = BlackRunner()
+ result = runner.invoke(black.main, [str(tmp_file)])
+ self.assertEqual(result.exit_code, 123)
+ finally:
+ os.unlink(tmp_file)
+ actual = (
+ runner.stderr_bytes.decode()
+ .replace("\n", "")
+ .replace("\\n", "")
+ .replace("\\r", "")
+ .replace("\r", "")
+ )
+ msg = (
+ "The requested source code has invalid Python 3 syntax."
+ "If you are trying to format Python 2 files please reinstall Black"
+ " with the 'python2' extra: `python3 -m pip install black[python2]`."
+ )
+ self.assertIn(msg, actual)
+ @pytest.mark.python2
@patch("black.dump_to_file", dump_to_stderr)
def test_python2_print_function(self) -> None:
source, expected = read_data("python2_print_function")
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, DEFAULT_MODE)
-
@patch("black.dump_to_file", dump_to_stderr)
def test_stub(self) -> None:
mode = replace(DEFAULT_MODE, is_pyi=True)
black.assert_equivalent(source, actual)
black.assert_stable(source, actual, DEFAULT_MODE)
- @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, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @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, DEFAULT_MODE)
-
- @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, 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)
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,]")
def test_cache_broken_file(self) -> None:
mode = DEFAULT_MODE
with cache_dir() as workspace:
- cache_file = black.get_cache_file(mode)
+ cache_file = get_cache_file(mode)
with cache_file.open("w") as fobj:
fobj.write("this is not a pickle")
self.assertEqual(black.read_cache(mode), {})
fobj.write("print('hello')")
self.invokeBlack([str(src)])
cache = black.read_cache(mode)
- self.assertIn(src, cache)
+ self.assertIn(str(src), cache)
def test_cache_single_file_already_cached(self) -> None:
mode = DEFAULT_MODE
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)
+ self.assertIn(str(one), cache)
+ self.assertIn(str(two), cache)
def test_no_cache_when_writeback_diff(self) -> None:
mode = DEFAULT_MODE
"black.write_cache"
) as write_cache:
self.invokeBlack([str(src), "--diff"])
- cache_file = black.get_cache_file(mode)
+ cache_file = get_cache_file(mode)
self.assertFalse(cache_file.exists())
write_cache.assert_not_called()
read_cache.assert_not_called()
"black.write_cache"
) as write_cache:
self.invokeBlack([str(src), "--diff", "--color"])
- cache_file = black.get_cache_file(mode)
+ cache_file = get_cache_file(mode)
self.assertFalse(cache_file.exists())
write_cache.assert_not_called()
read_cache.assert_not_called()
black.main, ["-"], input=BytesIO(b"print('hello')")
)
self.assertEqual(result.exit_code, 0)
- cache_file = black.get_cache_file(mode)
+ cache_file = get_cache_file(mode)
self.assertFalse(cache_file.exists())
def test_read_cache_no_cachefile(self) -> None:
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))
+ 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:
uncached.touch()
cached.touch()
cached_but_changed.touch()
- cache = {cached: black.get_cache_info(cached), cached_but_changed: (0.0, 0)}
+ 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}
)
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)
+ self.assertNotIn(str(failing), cache)
+ self.assertIn(str(clean), cache)
def test_write_cache_write_fail(self) -> None:
mode = DEFAULT_MODE
path.touch()
black.write_cache({}, [path], mode)
one = black.read_cache(mode)
- self.assertIn(path, one)
+ self.assertIn(str(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, DEFAULT_MODE)
+ self.assertNotIn(str(path), two)
def test_single_file_force_pyi(self) -> None:
pyi_mode = replace(DEFAULT_MODE, is_pyi=True)
actual = fh.read()
# verify cache with --pyi is separate
pyi_cache = black.read_cache(pyi_mode)
- self.assertIn(path, pyi_cache)
+ self.assertIn(str(path), pyi_cache)
normal_cache = black.read_cache(DEFAULT_MODE)
- self.assertNotIn(path, normal_cache)
+ self.assertNotIn(str(path), normal_cache)
self.assertFormatEqual(expected, actual)
black.assert_equivalent(contents, actual)
black.assert_stable(contents, actual, pyi_mode)
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")
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()
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, DEFAULT_MODE)
+ 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")
this_abs = THIS_DIR.resolve()
sources.extend(
black.gen_python_files(
- path.iterdir(), this_abs, include, exclude, None, report, gitignore
+ path.iterdir(),
+ this_abs,
+ include,
+ exclude,
+ None,
+ None,
+ report,
+ gitignore,
+ )
+ )
+ self.assertEqual(sorted(expected), sorted(sources))
+
+ def test_gitingore_used_as_default(self) -> None:
+ path = Path(THIS_DIR / "data" / "include_exclude_tests")
+ include = re.compile(r"\.pyi?$")
+ extend_exclude = re.compile(r"/exclude/")
+ src = str(path / "b/")
+ report = black.Report()
+ expected: List[Path] = [
+ path / "b/.definitely_exclude/a.py",
+ path / "b/.definitely_exclude/a.pyi",
+ ]
+ sources = list(
+ black.get_sources(
+ ctx=FakeContext(),
+ src=(src,),
+ quiet=True,
+ verbose=False,
+ include=include,
+ exclude=None,
+ extend_exclude=extend_exclude,
+ force_exclude=None,
+ report=report,
+ stdin_filename=None,
)
)
self.assertEqual(sorted(expected), sorted(sources))
src=(src,),
quiet=True,
verbose=False,
- include=include,
- exclude=exclude,
+ 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,
+ 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_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,
+ 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,
+ )
+ )
+ self.assertEqual([], sorted(sources))
+
+ 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,
+ )
+ 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,
+ )
+ fsts.assert_called_once_with(
+ fast=True, write_back=black.WriteBack.YES, mode=DEFAULT_MODE
+ )
+ # __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,
+ )
+ 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_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_gitignore_exclude(self) -> None:
path = THIS_DIR / "data" / "include_exclude_tests"
include = re.compile(r"\.pyi?$")
this_abs = THIS_DIR.resolve()
sources.extend(
black.gen_python_files(
- path.iterdir(), this_abs, include, exclude, None, report, gitignore
+ path.iterdir(),
+ this_abs,
+ include,
+ exclude,
+ None,
+ None,
+ report,
+ gitignore,
)
)
self.assertEqual(sorted(expected), sorted(sources))
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(
empty,
re.compile(black.DEFAULT_EXCLUDES),
None,
+ None,
report,
gitignore,
)
)
self.assertEqual(sorted(expected), sorted(sources))
- def test_empty_exclude(self) -> None:
+ def test_extend_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"),
+ Path(path / "b/dont_exclude/a.py"),
]
this_abs = THIS_DIR.resolve()
sources.extend(
path.iterdir(),
this_abs,
re.compile(black.DEFAULT_INCLUDES),
- empty,
+ re.compile(r"\.pyi$"),
+ re.compile(r"\.definitely_exclude"),
None,
report,
gitignore,
)
self.assertEqual(sorted(expected), sorted(sources))
- 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_preserves_line_endings(self) -> None:
try:
list(
black.gen_python_files(
- path.iterdir(), root, include, exclude, None, report, gitignore
+ path.iterdir(),
+ root,
+ include,
+ exclude,
+ None,
+ None,
+ report,
+ gitignore,
)
)
except ValueError as ve:
with self.assertRaises(ValueError):
list(
black.gen_python_files(
- path.iterdir(), root, include, exclude, None, report, gitignore
+ path.iterdir(),
+ root,
+ include,
+ exclude,
+ None,
+ None,
+ report,
+ gitignore,
)
)
path.iterdir.assert_called()
critical=fail,
log=fail,
):
- ff(THIS_FILE)
+ ff(THIS_DIR / "util.py")
def test_invalid_config_return_code(self) -> None:
tmp_file = Path(black.dump_to_file())
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
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:
+
+ # 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)
+
with open(black.__file__, "r", encoding="utf-8") as _bf:
black_source_lines = _bf.readlines()
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