#!/usr/bin/env python3
+import multiprocessing
import asyncio
import logging
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
from pathlib import Path
+from platform import system
import regex as re
import sys
from tempfile import TemporaryDirectory
-from typing import Any, BinaryIO, Dict, Generator, List, Tuple, Iterator, TypeVar
+import types
+from typing import (
+ Any,
+ BinaryIO,
+ Callable,
+ Dict,
+ Generator,
+ List,
+ Iterator,
+ TypeVar,
+)
import unittest
from unittest.mock import patch, MagicMock
import black
from black import Feature, TargetVersion
-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
# Import other test classes
+from tests.util import THIS_DIR, read_data, DETERMINISTIC_HEADER
from .test_primer import PrimerCLITests # noqa: F401
-ff = partial(black.format_file_in_place, mode=black.FileMode(), fast=True)
-fs = partial(black.format_str, mode=black.FileMode())
+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__)
-THIS_DIR = THIS_FILE.parent
-PROJECT_ROOT = THIS_DIR.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_VERSIONS = {
+ TargetVersion.PY36,
+ TargetVersion.PY37,
+ TargetVersion.PY38,
+ TargetVersion.PY39,
+}
+PY36_ARGS = [f"--target-version={version.name.lower()}" for version in PY36_VERSIONS]
T = TypeVar("T")
R = TypeVar("R")
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 PROJECT_ROOT
- 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"
-
-
@contextmanager
def cache_dir(exists: bool = True) -> Iterator[Path]:
with TemporaryDirectory() as workspace:
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."""
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"):
list(bdv.visit(exp_node))
except Exception as ve:
black.err(str(ve))
- self.assertEqual(expected, actual)
+ self.assertMultiLineEqual(expected, actual)
def invokeBlack(
self, args: List[str], exit_code: int = 0, ignore_config: bool = True
)
@patch("black.dump_to_file", dump_to_stderr)
- def checkSourceFile(self, name: str) -> None:
+ 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)
+ actual = fs(source, mode=mode)
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, black.FileMode())
+ black.assert_stable(source, actual, mode)
self.assertFalse(ff(path))
@patch("black.dump_to_file", dump_to_stderr)
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)
def test_empty_ff(self) -> None:
expected = ""
os.unlink(tmp_file)
self.assertFormatEqual(expected, actual)
- def test_self(self) -> None:
+ 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")
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())
+ black.assert_stable(source, result.output, DEFAULT_MODE)
def test_piping_diff(self) -> None:
diff_header = re.compile(
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_function2(self) -> None:
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")
+ 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())
@patch("black.dump_to_file", dump_to_stderr)
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_trailing_comma_optional_parens_stability1(self) -> None:
+ source, _expected = read_data("trailing_comma_optional_parens1")
+ actual = fs(source)
+ black.assert_stable(source, actual, DEFAULT_MODE)
+
+ @unittest.expectedFailure
+ @patch("black.dump_to_file", dump_to_stderr)
+ def test_trailing_comma_optional_parens_stability2(self) -> None:
+ source, _expected = read_data("trailing_comma_optional_parens2")
+ actual = fs(source)
+ black.assert_stable(source, actual, DEFAULT_MODE)
+
+ @unittest.expectedFailure
+ @patch("black.dump_to_file", dump_to_stderr)
+ def test_trailing_comma_optional_parens_stability3(self) -> None:
+ source, _expected = read_data("trailing_comma_optional_parens3")
+ actual = fs(source)
+ black.assert_stable(source, actual, DEFAULT_MODE)
@patch("black.dump_to_file", dump_to_stderr)
def test_expression(self) -> None:
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())
+ black.assert_stable(source, actual, DEFAULT_MODE)
if sys.version_info >= (3, 8):
black.assert_equivalent(source, actual)
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")
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_570(self) -> None:
source, expected = read_data("pep_570")
actual = fs(source)
self.assertFormatEqual(expected, actual)
- black.assert_stable(source, actual, black.FileMode())
+ black.assert_stable(source, actual, DEFAULT_MODE)
if sys.version_info >= (3, 8):
black.assert_equivalent(source, actual)
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)
+ black.assert_stable(source, actual, DEFAULT_MODE)
+ mode = replace(DEFAULT_MODE, string_normalization=False)
not_normalized = fs(source, mode=mode)
self.assertFormatEqual(source.replace("\\\n", ""), not_normalized)
black.assert_equivalent(source, not_normalized)
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_docstring_no_string_normalization(self) -> None:
+ """Like test_docstring but with string normalization off."""
+ source, expected = read_data("docstring_no_string_normalization")
+ mode = replace(DEFAULT_MODE, string_normalization=False)
+ actual = fs(source, mode=mode)
+ self.assertFormatEqual(expected, actual)
+ black.assert_equivalent(source, actual)
+ black.assert_stable(source, actual, mode)
def test_long_strings(self) -> None:
"""Tests for splitting long strings."""
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)
+
+ def test_long_strings_flag_disabled(self) -> None:
+ """Tests for turning off the string processing logic."""
+ source, expected = read_data("long_strings_flag_disabled")
+ mode = replace(DEFAULT_MODE, experimental_string_processing=False)
+ actual = fs(source, mode=mode)
+ self.assertFormatEqual(expected, actual)
+ black.assert_stable(expected, actual, mode)
@patch("black.dump_to_file", dump_to_stderr)
def test_long_strings__edge_case(self) -> None:
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_long_strings__regression(self) -> None:
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_slices(self) -> None:
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_percent_precedence(self) -> None:
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_comments(self) -> None:
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_comments2(self) -> None:
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_comments3(self) -> None:
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_comments4(self) -> None:
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_comments5(self) -> None:
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_comments6(self) -> None:
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_comments7(self) -> None:
source, expected = read_data("comments7")
- actual = fs(source)
+ 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, black.FileMode())
+ black.assert_stable(source, actual, DEFAULT_MODE)
@patch("black.dump_to_file", dump_to_stderr)
def test_comment_after_escaped_newline(self) -> None:
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_cantfit(self) -> None:
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_import_spacing(self) -> None:
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_composition(self) -> None:
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_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:
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_remove_parens(self) -> None:
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_string_prefixes(self) -> None:
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_numeric_literals(self) -> None:
source, expected = read_data("numeric_literals")
- mode = black.FileMode(target_versions=black.PY36_VERSIONS)
+ mode = replace(DEFAULT_MODE, target_versions=PY36_VERSIONS)
actual = fs(source, mode=mode)
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
@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)
+ mode = replace(DEFAULT_MODE, target_versions=PY36_VERSIONS)
actual = fs(source, mode=mode)
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
source, expected = read_data("numeric_literals_py2")
actual = fs(source)
self.assertFormatEqual(expected, 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_python2(self) -> None:
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_python2_print_function(self) -> None:
source, expected = read_data("python2_print_function")
- mode = black.FileMode(target_versions={TargetVersion.PY27})
+ mode = replace(DEFAULT_MODE, target_versions={TargetVersion.PY27})
actual = fs(source, mode=mode)
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
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_stub(self) -> None:
- mode = black.FileMode(is_pyi=True)
+ mode = replace(DEFAULT_MODE, is_pyi=True)
source, expected = read_data("stub.pyi")
actual = fs(source, mode=mode)
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())
+ 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
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())
+ 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
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())
+ black.assert_stable(source, actual, DEFAULT_MODE)
+
+ @patch("black.dump_to_file", dump_to_stderr)
+ def test_python39(self) -> None:
+ source, expected = read_data("python39")
+ actual = fs(source)
+ self.assertFormatEqual(expected, actual)
+ major, minor = sys.version_info[:2]
+ if major > 3 or (major == 3 and minor >= 9):
+ black.assert_equivalent(source, actual)
+ black.assert_stable(source, actual, DEFAULT_MODE)
@patch("black.dump_to_file", dump_to_stderr)
def test_fmtonoff(self) -> None:
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_fmtonoff2(self) -> None:
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_fmtonoff3(self) -> None:
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_fmtonoff4(self) -> None:
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_remove_empty_parentheses_after_class(self) -> None:
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_new_line_between_class_and_code(self) -> None:
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_bracket_match(self) -> None:
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_tuple_assign(self) -> None:
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_beginning_backslash(self) -> None:
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)
def test_tab_comment_indentation(self) -> None:
contents_tab = "if 1:\n\tif 2:\n\t\tpass\n\t# comment\n\tpass\n"
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())
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"
self.assertEqual("".join(err_lines), "")
def test_cache_broken_file(self) -> None:
- mode = black.FileMode()
+ mode = DEFAULT_MODE
with cache_dir() as workspace:
cache_file = black.get_cache_file(mode)
with cache_file.open("w") as fobj:
self.assertIn(src, cache)
def test_cache_single_file_already_cached(self) -> None:
- mode = black.FileMode()
+ mode = DEFAULT_MODE
with cache_dir() as workspace:
src = (workspace / "test.py").resolve()
with src.open("w") as fobj:
@event_loop()
def test_cache_multiple_files(self) -> None:
- mode = black.FileMode()
+ mode = DEFAULT_MODE
with cache_dir() as workspace, patch(
"black.ProcessPoolExecutor", new=ThreadPoolExecutor
):
self.assertIn(two, cache)
def test_no_cache_when_writeback_diff(self) -> None:
- mode = black.FileMode()
+ mode = DEFAULT_MODE
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())
+ with patch("black.read_cache") as read_cache, patch(
+ "black.write_cache"
+ ) as write_cache:
+ self.invokeBlack([str(src), "--diff"])
+ cache_file = black.get_cache_file(mode)
+ self.assertFalse(cache_file.exists())
+ write_cache.assert_not_called()
+ read_cache.assert_not_called()
+
+ def test_no_cache_when_writeback_color_diff(self) -> None:
+ mode = DEFAULT_MODE
+ with cache_dir() as workspace:
+ src = (workspace / "test.py").resolve()
+ with src.open("w") as fobj:
+ fobj.write("print('hello')")
+ with patch("black.read_cache") as read_cache, patch(
+ "black.write_cache"
+ ) as write_cache:
+ self.invokeBlack([str(src), "--diff", "--color"])
+ cache_file = black.get_cache_file(mode)
+ self.assertFalse(cache_file.exists())
+ write_cache.assert_not_called()
+ read_cache.assert_not_called()
+
+ @event_loop()
+ def test_output_locking_when_writeback_diff(self) -> None:
+ with cache_dir() as workspace:
+ for tag in range(0, 4):
+ src = (workspace / f"test{tag}.py").resolve()
+ with src.open("w") as fobj:
+ fobj.write("print('hello')")
+ with patch("black.Manager", wraps=multiprocessing.Manager) as mgr:
+ self.invokeBlack(["--diff", str(workspace)], exit_code=0)
+ # this isn't quite doing what we want, but if it _isn't_
+ # called then we cannot be using the lock it provides
+ mgr.assert_called()
+
+ @event_loop()
+ def test_output_locking_when_writeback_color_diff(self) -> None:
+ with cache_dir() as workspace:
+ for tag in range(0, 4):
+ src = (workspace / f"test{tag}.py").resolve()
+ with src.open("w") as fobj:
+ fobj.write("print('hello')")
+ with patch("black.Manager", wraps=multiprocessing.Manager) as mgr:
+ self.invokeBlack(["--diff", "--color", str(workspace)], exit_code=0)
+ # this isn't quite doing what we want, but if it _isn't_
+ # called then we cannot be using the lock it provides
+ mgr.assert_called()
def test_no_cache_when_stdin(self) -> None:
- mode = black.FileMode()
+ mode = DEFAULT_MODE
with cache_dir():
result = CliRunner().invoke(
black.main, ["-"], input=BytesIO(b"print('hello')")
self.assertFalse(cache_file.exists())
def test_read_cache_no_cachefile(self) -> None:
- mode = black.FileMode()
+ mode = DEFAULT_MODE
with cache_dir():
self.assertEqual(black.read_cache(mode), {})
def test_write_cache_read_cache(self) -> None:
- mode = black.FileMode()
+ mode = DEFAULT_MODE
with cache_dir() as workspace:
src = (workspace / "test.py").resolve()
src.touch()
self.assertEqual(done, {cached})
def test_write_cache_creates_directory_if_needed(self) -> None:
- mode = black.FileMode()
+ mode = DEFAULT_MODE
with cache_dir(exists=False) as workspace:
self.assertFalse(workspace.exists())
black.write_cache({}, [], mode)
@event_loop()
def test_failed_formatting_does_not_get_cached(self) -> None:
- mode = black.FileMode()
+ mode = DEFAULT_MODE
with cache_dir() as workspace, patch(
"black.ProcessPoolExecutor", new=ThreadPoolExecutor
):
self.assertIn(clean, cache)
def test_write_cache_write_fail(self) -> None:
- mode = black.FileMode()
+ mode = DEFAULT_MODE
with cache_dir(), patch.object(Path, "open") as mock:
mock.side_effect = OSError
black.write_cache({}, [], mode)
self.invokeBlack([str(workspace.resolve())])
def test_read_cache_line_lengths(self) -> None:
- mode = black.FileMode()
- short_mode = black.FileMode(line_length=1)
+ mode = DEFAULT_MODE
+ short_mode = replace(DEFAULT_MODE, line_length=1)
with cache_dir() as workspace:
path = (workspace / "file.py").resolve()
path.touch()
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)
def test_single_file_force_pyi(self) -> None:
- reg_mode = black.FileMode()
- pyi_mode = black.FileMode(is_pyi=True)
+ pyi_mode = replace(DEFAULT_MODE, is_pyi=True)
contents, expected = read_data("force_pyi")
with cache_dir() as workspace:
path = (workspace / "file.py").resolve()
# 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)
+ normal_cache = black.read_cache(DEFAULT_MODE)
self.assertNotIn(path, normal_cache)
- self.assertEqual(actual, expected)
+ self.assertFormatEqual(expected, actual)
+ black.assert_equivalent(contents, actual)
+ black.assert_stable(contents, actual, pyi_mode)
@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 = [
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()
@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 = [
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)
def test_pipe_force_py36(self) -> None:
source, expected = read_data("force_py36")
):
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)
-
def test_invalid_config_return_code(self) -> None:
tmp_file = Path(black.dump_to_file())
try:
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),
- )
+ 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(black.find_project_root((src_dir,)), src_dir.resolve())
self.assertEqual(black.find_project_root((src_python,)), src_dir.resolve())
+ def test_bpo_33660_workaround(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)}",
- )
-
- @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"}
- )
- 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"}
- )
- 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}
- )
- 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"}
- )
- self.assertEqual(response.status, 200)
- self.assertEqual(await response.text(), expected)
+ # https://bugs.python.org/issue33660
- @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(
- r"(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"
- )
+ old_cwd = Path.cwd()
+ try:
+ root = Path("/")
+ os.chdir(str(root))
+ path = Path("workspace") / "project"
+ report = black.Report(verbose=True)
+ normalized_path = black.normalize_path_maybe_ignore(path, root, report)
+ self.assertEqual(normalized_path, "workspace/project")
+ finally:
+ os.chdir(str(old_cwd))
- source, _ = read_data("blackd_diff.py")
- expected, _ = read_data("blackd_diff.diff")
- response = await self.client.post(
- "/", data=source, headers={blackd.DIFF_HEADER: "true"}
- )
- self.assertEqual(response.status, 200)
+with open(black.__file__, "r", encoding="utf-8") as _bf:
+ black_source_lines = _bf.readlines()
- actual = await response.text()
- actual = diff_header.sub(DETERMINISTIC_HEADER, actual)
- self.assertEqual(actual, expected)
- @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 tracefunc(frame: types.FrameType, event: str, arg: Any) -> Callable:
+ """Show function calls `from black/__init__.py` as they happen.
- async def check(header_value: str, expected_status: int) -> None:
- response = await self.client.post(
- "/", data=code, headers={blackd.PYTHON_VARIANT_HEADER: header_value}
- )
- self.assertEqual(
- response.status, expected_status, msg=await response.text()
- )
+ Register this with `sys.settrace()` in a test you're debugging.
+ """
+ if event != "call":
+ return tracefunc
- 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"}
- )
- 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"}
- )
- 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))
+ 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
if __name__ == "__main__":
projects / etc / vim.git / blobdiff