#!/usr/bin/env python3
import asyncio
+import logging
from concurrent.futures import ThreadPoolExecutor
from contextlib import contextmanager
from functools import partial
import re
import sys
from tempfile import TemporaryDirectory
-from typing import Any, BinaryIO, Generator, List, Tuple, Iterator
+from typing import Any, BinaryIO, Generator, List, Tuple, Iterator, TypeVar
import unittest
from unittest.mock import patch, MagicMock
from click.testing import CliRunner
import black
-
-
-ll = 88
-ff = partial(black.format_file_in_place, line_length=ll, fast=True)
-fs = partial(black.format_str, line_length=ll)
+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
+
+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
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
+]
+T = TypeVar("T")
+R = TypeVar("R")
def dump_to_stderr(*output: str) -> str:
@contextmanager
def event_loop(close: bool) -> Iterator[None]:
policy = asyncio.get_event_loop_policy()
- old_loop = policy.get_event_loop()
loop = policy.new_event_loop()
asyncio.set_event_loop(loop)
try:
yield
finally:
- policy.set_event_loop(old_loop)
if 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 BlackRunner(CliRunner):
"""Modify CliRunner so that stderr is not merged with stdout.
sys.stderr = TextIOWrapper(self.stderrbuf, encoding=self.charset)
yield output
finally:
- self.stdout_bytes = sys.stdout.buffer.getvalue()
- self.stderr_bytes = sys.stderr.buffer.getvalue()
+ self.stdout_bytes = sys.stdout.buffer.getvalue() # type: ignore
+ self.stderr_bytes = sys.stderr.buffer.getvalue() # type: ignore
sys.stderr = hold_stderr
black.err(str(ve))
self.assertEqual(expected, actual)
+ def invokeBlack(
+ self, args: List[str], exit_code: int = 0, ignore_config: bool = True
+ ) -> None:
+ runner = BlackRunner()
+ if ignore_config:
+ args = ["--config", str(THIS_DIR / "empty.toml"), *args]
+ result = runner.invoke(black.main, args)
+ self.assertEqual(result.exit_code, exit_code, msg=runner.stderr_bytes.decode())
+
@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, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
def test_empty_ff(self) -> None:
expected = ""
actual = fs(source)
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
self.assertFalse(ff(THIS_FILE))
@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, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
self.assertFalse(ff(THIS_DIR / ".." / "black.py"))
def test_piping(self) -> None:
source, expected = read_data("../black", data=False)
result = BlackRunner().invoke(
black.main,
- ["-", "--fast", f"--line-length={ll}"],
+ ["-", "--fast", f"--line-length={black.DEFAULT_LINE_LENGTH}"],
input=BytesIO(source.encode("utf8")),
)
self.assertEqual(result.exit_code, 0)
self.assertFormatEqual(expected, result.output)
black.assert_equivalent(source, result.output)
- black.assert_stable(source, result.output, line_length=ll)
+ black.assert_stable(source, result.output, black.FileMode())
def test_piping_diff(self) -> None:
diff_header = re.compile(
source, _ = read_data("expression.py")
expected, _ = read_data("expression.diff")
config = THIS_DIR / "data" / "empty_pyproject.toml"
- args = ["-", "--fast", f"--line-length={ll}", "--diff", f"--config={config}"]
+ args = [
+ "-",
+ "--fast",
+ f"--line-length={black.DEFAULT_LINE_LENGTH}",
+ "--diff",
+ f"--config={config}",
+ ]
result = BlackRunner().invoke(
black.main, args, input=BytesIO(source.encode("utf8"))
)
actual = fs(source)
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
self.assertFalse(ff(THIS_DIR / ".." / "setup.py"))
@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, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
@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, line_length=ll)
+ 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, black.FileMode())
@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, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
+
+ @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_pep_572_version_detection(self) -> None:
+ source, _ = read_data("pep_572")
+ root = black.lib2to3_parse(source)
+ features = black.get_features_used(root)
+ self.assertIn(black.Feature.ASSIGNMENT_EXPRESSIONS, features)
+ versions = black.detect_target_versions(root)
+ self.assertIn(black.TargetVersion.PY38, versions)
def test_expression_ff(self) -> None:
source, expected = read_data("expression")
self.assertFormatEqual(expected, actual)
with patch("black.dump_to_file", dump_to_stderr):
black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
def test_expression_diff(self) -> None:
source, _ = read_data("expression.py")
msg = (
f"Expected diff isn't equal to the actual. If you made changes "
f"to expression.py and this is an anticipated difference, "
- f"overwrite tests/expression.diff with {dump}"
+ f"overwrite tests/data/expression.diff with {dump}"
)
self.assertEqual(expected, actual, msg)
actual = fs(source)
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, line_length=ll)
+ 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)
+ features = black.get_features_used(root)
+ self.assertIn(black.Feature.POS_ONLY_ARGUMENTS, features)
+ versions = black.detect_target_versions(root)
+ self.assertIn(black.TargetVersion.PY38, versions)
@patch("black.dump_to_file", dump_to_stderr)
def test_string_quotes(self) -> None:
actual = fs(source)
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, line_length=ll)
- mode = black.FileMode.NO_STRING_NORMALIZATION
+ black.assert_stable(source, actual, black.FileMode())
+ mode = black.FileMode(string_normalization=False)
not_normalized = fs(source, mode=mode)
self.assertFormatEqual(source, not_normalized)
black.assert_equivalent(source, not_normalized)
- black.assert_stable(source, not_normalized, line_length=ll, mode=mode)
+ black.assert_stable(source, not_normalized, mode=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, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
@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, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
@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, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
@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, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
@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, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
@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, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
+
+ @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, black.FileMode())
+
+ @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())
+
+ @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())
@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, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
@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, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
@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, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
@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, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
+
+ @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())
@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, line_length=ll)
+ 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")
- actual = fs(source, mode=black.FileMode.PYTHON36)
+ 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, line_length=ll)
+ 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, line_length=ll)
+ 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, line_length=ll)
+ 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_stable(source, actual, line_length=ll)
+ 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.PYI
+ 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, line_length=ll, mode=mode)
+ 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, line_length=ll)
+ 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_fmtonoff(self) -> None:
actual = fs(source)
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
@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, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
@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, line_length=ll)
+ 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:
actual = fs(source)
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, line_length=ll)
+ black.assert_stable(source, actual, black.FileMode())
@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, line_length=ll)
+ 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)
"2 files would fail to reformat.",
)
- def test_is_python36(self) -> None:
+ def test_lib2to3_parse(self) -> None:
+ with self.assertRaises(black.InvalidInput):
+ black.lib2to3_parse("invalid syntax")
+
+ straddling = "x + y"
+ black.lib2to3_parse(straddling)
+ black.lib2to3_parse(straddling, {TargetVersion.PY27})
+ black.lib2to3_parse(straddling, {TargetVersion.PY36})
+ black.lib2to3_parse(straddling, {TargetVersion.PY27, TargetVersion.PY36})
+
+ py2_only = "print x"
+ black.lib2to3_parse(py2_only)
+ black.lib2to3_parse(py2_only, {TargetVersion.PY27})
+ with self.assertRaises(black.InvalidInput):
+ black.lib2to3_parse(py2_only, {TargetVersion.PY36})
+ with self.assertRaises(black.InvalidInput):
+ black.lib2to3_parse(py2_only, {TargetVersion.PY27, TargetVersion.PY36})
+
+ py3_only = "exec(x, end=y)"
+ black.lib2to3_parse(py3_only)
+ with self.assertRaises(black.InvalidInput):
+ black.lib2to3_parse(py3_only, {TargetVersion.PY27})
+ black.lib2to3_parse(py3_only, {TargetVersion.PY36})
+ black.lib2to3_parse(py3_only, {TargetVersion.PY27, TargetVersion.PY36})
+
+ def test_get_features_used(self) -> None:
node = black.lib2to3_parse("def f(*, arg): ...\n")
- self.assertFalse(black.is_python36(node))
+ self.assertEqual(black.get_features_used(node), set())
node = black.lib2to3_parse("def f(*, arg,): ...\n")
- self.assertTrue(black.is_python36(node))
+ self.assertEqual(black.get_features_used(node), {Feature.TRAILING_COMMA_IN_DEF})
+ node = black.lib2to3_parse("f(*arg,)\n")
+ self.assertEqual(
+ black.get_features_used(node), {Feature.TRAILING_COMMA_IN_CALL}
+ )
node = black.lib2to3_parse("def f(*, arg): f'string'\n")
- self.assertTrue(black.is_python36(node))
+ self.assertEqual(black.get_features_used(node), {Feature.F_STRINGS})
node = black.lib2to3_parse("123_456\n")
- self.assertTrue(black.is_python36(node))
+ self.assertEqual(black.get_features_used(node), {Feature.NUMERIC_UNDERSCORES})
node = black.lib2to3_parse("123456\n")
- self.assertFalse(black.is_python36(node))
+ self.assertEqual(black.get_features_used(node), set())
source, expected = read_data("function")
node = black.lib2to3_parse(source)
- self.assertTrue(black.is_python36(node))
+ expected_features = {
+ Feature.TRAILING_COMMA_IN_CALL,
+ Feature.TRAILING_COMMA_IN_DEF,
+ Feature.F_STRINGS,
+ }
+ self.assertEqual(black.get_features_used(node), expected_features)
node = black.lib2to3_parse(expected)
- self.assertTrue(black.is_python36(node))
+ self.assertEqual(black.get_features_used(node), expected_features)
source, expected = read_data("expression")
node = black.lib2to3_parse(source)
- self.assertFalse(black.is_python36(node))
+ self.assertEqual(black.get_features_used(node), set())
node = black.lib2to3_parse(expected)
- self.assertFalse(black.is_python36(node))
+ self.assertEqual(black.get_features_used(node), set())
def test_get_future_imports(self) -> None:
node = black.lib2to3_parse("\n")
def test_format_file_contents(self) -> None:
empty = ""
+ mode = black.FileMode()
with self.assertRaises(black.NothingChanged):
- black.format_file_contents(empty, line_length=ll, fast=False)
+ black.format_file_contents(empty, mode=mode, fast=False)
just_nl = "\n"
with self.assertRaises(black.NothingChanged):
- black.format_file_contents(just_nl, line_length=ll, fast=False)
+ black.format_file_contents(just_nl, mode=mode, fast=False)
same = "l = [1, 2, 3]\n"
with self.assertRaises(black.NothingChanged):
- black.format_file_contents(same, line_length=ll, fast=False)
+ black.format_file_contents(same, mode=mode, fast=False)
different = "l = [1,2,3]"
expected = same
- actual = black.format_file_contents(different, line_length=ll, fast=False)
+ actual = black.format_file_contents(different, mode=mode, fast=False)
self.assertEqual(expected, actual)
invalid = "return if you can"
- with self.assertRaises(ValueError) as e:
- black.format_file_contents(invalid, line_length=ll, fast=False)
+ with self.assertRaises(black.InvalidInput) as e:
+ black.format_file_contents(invalid, mode=mode, fast=False)
self.assertEqual(str(e.exception), "Cannot parse: 1:7: return if you can")
def test_endmarker(self) -> None:
self.assertEqual("".join(err_lines), "")
def test_cache_broken_file(self) -> None:
- mode = black.FileMode.AUTO_DETECT
+ mode = black.FileMode()
with cache_dir() as workspace:
- cache_file = black.get_cache_file(black.DEFAULT_LINE_LENGTH, mode)
+ 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(black.DEFAULT_LINE_LENGTH, mode), {})
+ self.assertEqual(black.read_cache(mode), {})
src = (workspace / "test.py").resolve()
with src.open("w") as fobj:
fobj.write("print('hello')")
- result = CliRunner().invoke(black.main, [str(src)])
- self.assertEqual(result.exit_code, 0)
- cache = black.read_cache(black.DEFAULT_LINE_LENGTH, mode)
+ 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.AUTO_DETECT
+ 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], black.DEFAULT_LINE_LENGTH, mode)
- result = CliRunner().invoke(black.main, [str(src)])
- self.assertEqual(result.exit_code, 0)
+ 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.AUTO_DETECT
+ mode = black.FileMode()
with cache_dir() as workspace, patch(
"black.ProcessPoolExecutor", new=ThreadPoolExecutor
):
two = (workspace / "two.py").resolve()
with two.open("w") as fobj:
fobj.write("print('hello')")
- black.write_cache({}, [one], black.DEFAULT_LINE_LENGTH, mode)
- result = CliRunner().invoke(black.main, [str(workspace)])
- self.assertEqual(result.exit_code, 0)
+ 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(black.DEFAULT_LINE_LENGTH, mode)
+ 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.AUTO_DETECT
+ mode = black.FileMode()
with cache_dir() as workspace:
src = (workspace / "test.py").resolve()
with src.open("w") as fobj:
fobj.write("print('hello')")
- result = CliRunner().invoke(black.main, [str(src), "--diff"])
- self.assertEqual(result.exit_code, 0)
- cache_file = black.get_cache_file(black.DEFAULT_LINE_LENGTH, mode)
+ 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.AUTO_DETECT
+ 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(black.DEFAULT_LINE_LENGTH, mode)
+ cache_file = black.get_cache_file(mode)
self.assertFalse(cache_file.exists())
def test_read_cache_no_cachefile(self) -> None:
- mode = black.FileMode.AUTO_DETECT
+ mode = black.FileMode()
with cache_dir():
- self.assertEqual(black.read_cache(black.DEFAULT_LINE_LENGTH, mode), {})
+ self.assertEqual(black.read_cache(mode), {})
def test_write_cache_read_cache(self) -> None:
- mode = black.FileMode.AUTO_DETECT
+ mode = black.FileMode()
with cache_dir() as workspace:
src = (workspace / "test.py").resolve()
src.touch()
- black.write_cache({}, [src], black.DEFAULT_LINE_LENGTH, mode)
- cache = black.read_cache(black.DEFAULT_LINE_LENGTH, mode)
+ black.write_cache({}, [src], mode)
+ cache = black.read_cache(mode)
self.assertIn(src, cache)
self.assertEqual(cache[src], black.get_cache_info(src))
self.assertEqual(done, {cached})
def test_write_cache_creates_directory_if_needed(self) -> None:
- mode = black.FileMode.AUTO_DETECT
+ mode = black.FileMode()
with cache_dir(exists=False) as workspace:
self.assertFalse(workspace.exists())
- black.write_cache({}, [], black.DEFAULT_LINE_LENGTH, mode)
+ 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.AUTO_DETECT
+ mode = black.FileMode()
with cache_dir() as workspace, patch(
"black.ProcessPoolExecutor", new=ThreadPoolExecutor
):
clean = (workspace / "clean.py").resolve()
with clean.open("w") as fobj:
fobj.write('print("hello")\n')
- result = CliRunner().invoke(black.main, [str(workspace)])
- self.assertEqual(result.exit_code, 123)
- cache = black.read_cache(black.DEFAULT_LINE_LENGTH, mode)
+ 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.AUTO_DETECT
+ mode = black.FileMode()
with cache_dir(), patch.object(Path, "open") as mock:
mock.side_effect = OSError
- black.write_cache({}, [], black.DEFAULT_LINE_LENGTH, mode)
+ black.write_cache({}, [], mode)
@event_loop(close=False)
def test_check_diff_use_together(self) -> None:
with cache_dir():
# Files which will be reformatted.
src1 = (THIS_DIR / "data" / "string_quotes.py").resolve()
- result = CliRunner().invoke(black.main, [str(src1), "--diff", "--check"])
- self.assertEqual(result.exit_code, 1, result.output)
+ self.invokeBlack([str(src1), "--diff", "--check"], exit_code=1)
# Files which will not be reformatted.
src2 = (THIS_DIR / "data" / "composition.py").resolve()
- result = CliRunner().invoke(black.main, [str(src2), "--diff", "--check"])
- self.assertEqual(result.exit_code, 0, result.output)
+ self.invokeBlack([str(src2), "--diff", "--check"])
# Multi file command.
- result = CliRunner().invoke(
- black.main, [str(src1), str(src2), "--diff", "--check"]
- )
- self.assertEqual(result.exit_code, 1, result.output)
+ self.invokeBlack([str(src1), str(src2), "--diff", "--check"], exit_code=1)
def test_no_files(self) -> None:
with cache_dir():
# Without an argument, black exits with error code 0.
- result = CliRunner().invoke(black.main, [])
- self.assertEqual(result.exit_code, 0)
+ self.invokeBlack([])
def test_broken_symlink(self) -> None:
with cache_dir() as workspace:
symlink.symlink_to("nonexistent.py")
except OSError as e:
self.skipTest(f"Can't create symlinks: {e}")
- result = CliRunner().invoke(black.main, [str(workspace.resolve())])
- self.assertEqual(result.exit_code, 0)
+ self.invokeBlack([str(workspace.resolve())])
def test_read_cache_line_lengths(self) -> None:
- mode = black.FileMode.AUTO_DETECT
+ 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], 1, mode)
- one = black.read_cache(1, mode)
+ black.write_cache({}, [path], mode)
+ one = black.read_cache(mode)
self.assertIn(path, one)
- two = black.read_cache(2, mode)
+ two = black.read_cache(short_mode)
self.assertNotIn(path, two)
def test_single_file_force_pyi(self) -> None:
- reg_mode = black.FileMode.AUTO_DETECT
- pyi_mode = black.FileMode.PYI
+ reg_mode = black.FileMode()
+ pyi_mode = black.FileMode(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:
fh.write(contents)
- result = CliRunner().invoke(black.main, [str(path), "--pyi"])
- self.assertEqual(result.exit_code, 0)
+ self.invokeBlack([str(path), "--pyi"])
with open(path, "r") as fh:
actual = fh.read()
# verify cache with --pyi is separate
- pyi_cache = black.read_cache(black.DEFAULT_LINE_LENGTH, pyi_mode)
+ pyi_cache = black.read_cache(pyi_mode)
self.assertIn(path, pyi_cache)
- normal_cache = black.read_cache(black.DEFAULT_LINE_LENGTH, reg_mode)
+ normal_cache = black.read_cache(reg_mode)
self.assertNotIn(path, normal_cache)
self.assertEqual(actual, expected)
@event_loop(close=False)
def test_multi_file_force_pyi(self) -> None:
- reg_mode = black.FileMode.AUTO_DETECT
- pyi_mode = black.FileMode.PYI
+ reg_mode = black.FileMode()
+ pyi_mode = black.FileMode(is_pyi=True)
contents, expected = read_data("force_pyi")
with cache_dir() as workspace:
paths = [
for path in paths:
with open(path, "w") as fh:
fh.write(contents)
- result = CliRunner().invoke(black.main, [str(p) for p in paths] + ["--pyi"])
- self.assertEqual(result.exit_code, 0)
+ self.invokeBlack([str(p) for p in paths] + ["--pyi"])
for path in paths:
with open(path, "r") as fh:
actual = fh.read()
self.assertEqual(actual, expected)
# verify cache with --pyi is separate
- pyi_cache = black.read_cache(black.DEFAULT_LINE_LENGTH, pyi_mode)
- normal_cache = black.read_cache(black.DEFAULT_LINE_LENGTH, reg_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.assertFormatEqual(actual, expected)
def test_single_file_force_py36(self) -> None:
- reg_mode = black.FileMode.AUTO_DETECT
- py36_mode = black.FileMode.PYTHON36
+ reg_mode = black.FileMode()
+ py36_mode = black.FileMode(target_versions=black.PY36_VERSIONS)
source, expected = read_data("force_py36")
with cache_dir() as workspace:
path = (workspace / "file.py").resolve()
with open(path, "w") as fh:
fh.write(source)
- result = CliRunner().invoke(black.main, [str(path), "--py36"])
- self.assertEqual(result.exit_code, 0)
+ self.invokeBlack([str(path), *PY36_ARGS])
with open(path, "r") as fh:
actual = fh.read()
- # verify cache with --py36 is separate
- py36_cache = black.read_cache(black.DEFAULT_LINE_LENGTH, py36_mode)
+ # verify cache with --target-version is separate
+ py36_cache = black.read_cache(py36_mode)
self.assertIn(path, py36_cache)
- normal_cache = black.read_cache(black.DEFAULT_LINE_LENGTH, reg_mode)
+ normal_cache = black.read_cache(reg_mode)
self.assertNotIn(path, normal_cache)
self.assertEqual(actual, expected)
@event_loop(close=False)
def test_multi_file_force_py36(self) -> None:
- reg_mode = black.FileMode.AUTO_DETECT
- py36_mode = black.FileMode.PYTHON36
+ reg_mode = black.FileMode()
+ py36_mode = black.FileMode(target_versions=black.PY36_VERSIONS)
source, expected = read_data("force_py36")
with cache_dir() as workspace:
paths = [
for path in paths:
with open(path, "w") as fh:
fh.write(source)
- result = CliRunner().invoke(
- black.main, [str(p) for p in paths] + ["--py36"]
- )
- self.assertEqual(result.exit_code, 0)
+ self.invokeBlack([str(p) for p in paths] + PY36_ARGS)
for path in paths:
with open(path, "r") as fh:
actual = fh.read()
self.assertEqual(actual, expected)
- # verify cache with --py36 is separate
- pyi_cache = black.read_cache(black.DEFAULT_LINE_LENGTH, py36_mode)
- normal_cache = black.read_cache(black.DEFAULT_LINE_LENGTH, reg_mode)
+ # verify cache with --target-version is separate
+ 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_pipe_force_py36(self) -> None:
source, expected = read_data("force_py36")
result = CliRunner().invoke(
- black.main, ["-", "-q", "--py36"], input=BytesIO(source.encode("utf8"))
+ black.main,
+ ["-", "-q", "--target-version=py36"],
+ input=BytesIO(source.encode("utf8")),
)
self.assertEqual(result.exit_code, 0)
actual = result.output
def test_invalid_include_exclude(self) -> None:
for option in ["--include", "--exclude"]:
- result = CliRunner().invoke(black.main, ["-", option, "**()(!!*)"])
- self.assertEqual(result.exit_code, 2)
+ self.invokeBlack(["-", option, "**()(!!*)"], exit_code=2)
def test_preserves_line_endings(self) -> None:
with TemporaryDirectory() as workspace:
result = runner.invoke(
black.main, ["-", "--fast"], input=BytesIO(contents.encode("utf8"))
)
+ self.assertEqual(result.exit_code, 0)
output = runner.stdout_bytes
self.assertIn(nl.encode("utf8"), output)
if nl == "\n":
try:
list(black.gen_python_files_in_dir(path, root, include, exclude, report))
except ValueError as ve:
- self.fail("`get_python_files_in_dir()` failed: {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()
except RuntimeError as re:
self.fail(f"`patch_click()` failed, exception still raised: {re}")
+ def test_root_logger_not_used_directly(self) -> None:
+ def fail(*args: Any, **kwargs: Any) -> None:
+ self.fail("Record created with root logger")
+
+ with patch.multiple(
+ logging.root,
+ debug=fail,
+ info=fail,
+ warning=fail,
+ error=fail,
+ critical=fail,
+ log=fail,
+ ):
+ ff(THIS_FILE)
+
+ @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)
+
+
+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.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.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)
+
+ @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"
+ )
+
+ 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()
+ )
+
+ 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)
+
if __name__ == "__main__":
unittest.main(module="test_black")
projects / etc / vim.git / blobdiff