#!/usr/bin/env python3
import asyncio
from concurrent.futures import ThreadPoolExecutor
-from contextlib import contextmanager
-from functools import partial
-from io import StringIO
+from contextlib import contextmanager, redirect_stderr
+from functools import partial, wraps
+from io import BytesIO, TextIOWrapper
import os
from pathlib import Path
+import re
import sys
from tempfile import TemporaryDirectory
-from typing import Any, List, Tuple, Iterator
+from typing import (
+ Any,
+ BinaryIO,
+ Callable,
+ Coroutine,
+ Generator,
+ List,
+ Tuple,
+ Iterator,
+ TypeVar,
+)
import unittest
-from unittest.mock import patch
-import re
+from unittest.mock import patch, MagicMock
from click import unstyle
from click.testing import CliRunner
import black
+try:
+ import blackd
+ from aiohttp.test_utils import TestClient, TestServer
+except ImportError:
+ has_blackd_deps = False
+else:
+ has_blackd_deps = True
+
+
ll = 88
ff = partial(black.format_file_in_place, line_length=ll, fast=True)
fs = partial(black.format_str, line_length=ll)
THIS_FILE = Path(__file__)
THIS_DIR = THIS_FILE.parent
EMPTY_LINE = "# EMPTY LINE WITH WHITESPACE" + " (this comment will be removed)"
+T = TypeVar("T")
+R = TypeVar("R")
def dump_to_stderr(*output: str) -> str:
return "\n" + "\n".join(output) + "\n"
-def read_data(name: str) -> Tuple[str, str]:
+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] = []
- with open(THIS_DIR / name, "r", encoding="utf8") as test:
+ base_dir = THIS_DIR / "data" if data else THIS_DIR
+ with open(base_dir / name, "r", encoding="utf8") as test:
lines = test.readlines()
result = _input
for line in lines:
loop.close()
+def async_test(f: Callable[..., Coroutine[Any, None, R]]) -> Callable[..., None]:
+ @event_loop(close=True)
+ @wraps(f)
+ def wrapper(*args: Any, **kwargs: Any) -> None:
+ asyncio.get_event_loop().run_until_complete(f(*args, **kwargs))
+
+ return wrapper
+
+
+class BlackRunner(CliRunner):
+ """Modify CliRunner so that stderr is not merged with stdout.
+
+ This is a hack that can be removed once we depend on Click 7.x"""
+
+ def __init__(self) -> None:
+ self.stderrbuf = BytesIO()
+ self.stdoutbuf = BytesIO()
+ self.stdout_bytes = b""
+ self.stderr_bytes = b""
+ super().__init__()
+
+ @contextmanager
+ def isolation(self, *args: Any, **kwargs: Any) -> Generator[BinaryIO, None, None]:
+ with super().isolation(*args, **kwargs) as output:
+ try:
+ hold_stderr = sys.stderr
+ sys.stderr = TextIOWrapper(self.stderrbuf, encoding=self.charset)
+ yield output
+ finally:
+ self.stdout_bytes = sys.stdout.buffer.getvalue() # type: ignore
+ self.stderr_bytes = sys.stderr.buffer.getvalue() # type: ignore
+ sys.stderr = hold_stderr
+
+
class BlackTestCase(unittest.TestCase):
maxDiff = None
black.err(str(ve))
self.assertEqual(expected, actual)
+ @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)
+
+ def test_empty_ff(self) -> None:
+ expected = ""
+ tmp_file = Path(black.dump_to_file())
+ try:
+ self.assertFalse(ff(tmp_file, write_back=black.WriteBack.YES))
+ with open(tmp_file, encoding="utf8") as f:
+ actual = f.read()
+ finally:
+ os.unlink(tmp_file)
+ self.assertFormatEqual(expected, actual)
+
@patch("black.dump_to_file", dump_to_stderr)
def test_self(self) -> None:
- source, expected = read_data("test_black")
+ source, expected = read_data("test_black", data=False)
actual = fs(source)
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
@patch("black.dump_to_file", dump_to_stderr)
def test_black(self) -> None:
- source, expected = read_data("../black")
+ source, expected = read_data("../black", data=False)
actual = fs(source)
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
self.assertFalse(ff(THIS_DIR / ".." / "black.py"))
def test_piping(self) -> None:
- source, expected = read_data("../black")
- hold_stdin, hold_stdout = sys.stdin, sys.stdout
- try:
- sys.stdin, sys.stdout = StringIO(source), StringIO()
- sys.stdin.name = "<stdin>"
- black.format_stdin_to_stdout(
- line_length=ll, fast=True, write_back=black.WriteBack.YES
- )
- sys.stdout.seek(0)
- actual = sys.stdout.read()
- finally:
- sys.stdin, sys.stdout = hold_stdin, hold_stdout
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, line_length=ll)
+ source, expected = read_data("../black", data=False)
+ result = BlackRunner().invoke(
+ black.main,
+ ["-", "--fast", f"--line-length={ll}"],
+ 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)
def test_piping_diff(self) -> None:
+ diff_header = re.compile(
+ rf"(STDIN|STDOUT)\t\d\d\d\d-\d\d-\d\d "
+ rf"\d\d:\d\d:\d\d\.\d\d\d\d\d\d \+\d\d\d\d"
+ )
source, _ = read_data("expression.py")
expected, _ = read_data("expression.diff")
- hold_stdin, hold_stdout = sys.stdin, sys.stdout
- try:
- sys.stdin, sys.stdout = StringIO(source), StringIO()
- sys.stdin.name = "<stdin>"
- black.format_stdin_to_stdout(
- line_length=ll, fast=True, write_back=black.WriteBack.DIFF
- )
- sys.stdout.seek(0)
- actual = sys.stdout.read()
- finally:
- sys.stdin, sys.stdout = hold_stdin, hold_stdout
+ config = THIS_DIR / "data" / "empty_pyproject.toml"
+ args = ["-", "--fast", f"--line-length={ll}", "--diff", f"--config={config}"]
+ result = BlackRunner().invoke(
+ black.main, args, input=BytesIO(source.encode("utf8"))
+ )
+ self.assertEqual(result.exit_code, 0)
+ actual = diff_header.sub("[Deterministic header]", result.output)
actual = actual.rstrip() + "\n" # the diff output has a trailing space
self.assertEqual(expected, actual)
@patch("black.dump_to_file", dump_to_stderr)
def test_setup(self) -> None:
- source, expected = read_data("../setup")
+ source, expected = read_data("../setup", data=False)
actual = fs(source)
self.assertFormatEqual(expected, actual)
black.assert_equivalent(source, actual)
source, _ = read_data("expression.py")
expected, _ = read_data("expression.diff")
tmp_file = Path(black.dump_to_file(source))
- hold_stdout = sys.stdout
+ diff_header = re.compile(
+ rf"{re.escape(str(tmp_file))}\t\d\d\d\d-\d\d-\d\d "
+ rf"\d\d:\d\d:\d\d\.\d\d\d\d\d\d \+\d\d\d\d"
+ )
try:
- sys.stdout = StringIO()
- self.assertTrue(ff(tmp_file, write_back=black.WriteBack.DIFF))
- sys.stdout.seek(0)
- actual = sys.stdout.read()
- actual = actual.replace(str(tmp_file), "<stdin>")
+ result = BlackRunner().invoke(black.main, ["--diff", str(tmp_file)])
+ self.assertEqual(result.exit_code, 0)
finally:
- sys.stdout = hold_stdout
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 = (
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)
black.assert_equivalent(source, actual)
black.assert_stable(source, actual, line_length=ll)
+ @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, line_length=ll)
+
@patch("black.dump_to_file", dump_to_stderr)
def test_cantfit(self) -> None:
source, expected = read_data("cantfit")
black.assert_equivalent(source, actual)
black.assert_stable(source, actual, line_length=ll)
+ @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)
+ self.assertFormatEqual(expected, actual)
+ black.assert_equivalent(source, actual)
+ black.assert_stable(source, actual, line_length=ll)
+
+ @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.PYTHON36 | black.FileMode.NO_NUMERIC_UNDERSCORE_NORMALIZATION
+ )
+ actual = fs(source, mode=mode)
+ self.assertFormatEqual(expected, actual)
+ black.assert_equivalent(source, actual)
+ black.assert_stable(source, actual, line_length=ll, mode=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)
+
@patch("black.dump_to_file", dump_to_stderr)
def test_python2(self) -> None:
source, expected = read_data("python2")
self.assertFormatEqual(expected, actual)
black.assert_stable(source, actual, line_length=ll, mode=mode)
+ @patch("black.dump_to_file", dump_to_stderr)
+ def test_python37(self) -> None:
+ 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)
+
@patch("black.dump_to_file", dump_to_stderr)
def test_fmtonoff(self) -> None:
source, expected = read_data("fmtonoff")
black.assert_equivalent(source, actual)
black.assert_stable(source, actual, line_length=ll)
+ @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, line_length=ll)
+
@patch("black.dump_to_file", dump_to_stderr)
def test_remove_empty_parentheses_after_class(self) -> None:
source, expected = read_data("class_blank_parentheses")
black.assert_equivalent(source, actual)
black.assert_stable(source, actual, line_length=ll)
- def test_report(self) -> None:
- report = black.Report()
+ @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, line_length=ll)
+
+ def test_report_verbose(self) -> None:
+ report = black.Report(verbose=True)
out_lines = []
err_lines = []
"2 files failed to reformat.",
)
self.assertEqual(report.return_code, 123)
- report.done(Path("f4"), black.Changed.NO)
+ report.path_ignored(Path("wat"), "no match")
self.assertEqual(len(out_lines), 5)
self.assertEqual(len(err_lines), 2)
+ self.assertEqual(out_lines[-1], "wat ignored: no match")
+ self.assertEqual(
+ unstyle(str(report)),
+ "2 files reformatted, 2 files left unchanged, "
+ "2 files failed to reformat.",
+ )
+ self.assertEqual(report.return_code, 123)
+ report.done(Path("f4"), black.Changed.NO)
+ self.assertEqual(len(out_lines), 6)
+ self.assertEqual(len(err_lines), 2)
self.assertEqual(out_lines[-1], "f4 already well formatted, good job.")
self.assertEqual(
unstyle(str(report)),
"2 files would fail to reformat.",
)
+ def test_report_quiet(self) -> None:
+ report = black.Report(quiet=True)
+ out_lines = []
+ err_lines = []
+
+ def out(msg: str, **kwargs: Any) -> None:
+ out_lines.append(msg)
+
+ def err(msg: str, **kwargs: Any) -> None:
+ err_lines.append(msg)
+
+ with patch("black.out", out), patch("black.err", err):
+ report.done(Path("f1"), black.Changed.NO)
+ self.assertEqual(len(out_lines), 0)
+ self.assertEqual(len(err_lines), 0)
+ self.assertEqual(unstyle(str(report)), "1 file left unchanged.")
+ self.assertEqual(report.return_code, 0)
+ report.done(Path("f2"), black.Changed.YES)
+ self.assertEqual(len(out_lines), 0)
+ self.assertEqual(len(err_lines), 0)
+ self.assertEqual(
+ unstyle(str(report)), "1 file reformatted, 1 file left unchanged."
+ )
+ report.done(Path("f3"), black.Changed.CACHED)
+ self.assertEqual(len(out_lines), 0)
+ self.assertEqual(len(err_lines), 0)
+ self.assertEqual(
+ unstyle(str(report)), "1 file reformatted, 2 files left unchanged."
+ )
+ self.assertEqual(report.return_code, 0)
+ report.check = True
+ self.assertEqual(report.return_code, 1)
+ report.check = False
+ report.failed(Path("e1"), "boom")
+ self.assertEqual(len(out_lines), 0)
+ self.assertEqual(len(err_lines), 1)
+ self.assertEqual(err_lines[-1], "error: cannot format e1: boom")
+ self.assertEqual(
+ unstyle(str(report)),
+ "1 file reformatted, 2 files left unchanged, "
+ "1 file failed to reformat.",
+ )
+ self.assertEqual(report.return_code, 123)
+ report.done(Path("f3"), black.Changed.YES)
+ self.assertEqual(len(out_lines), 0)
+ self.assertEqual(len(err_lines), 1)
+ self.assertEqual(
+ unstyle(str(report)),
+ "2 files reformatted, 2 files left unchanged, "
+ "1 file failed to reformat.",
+ )
+ self.assertEqual(report.return_code, 123)
+ report.failed(Path("e2"), "boom")
+ self.assertEqual(len(out_lines), 0)
+ self.assertEqual(len(err_lines), 2)
+ self.assertEqual(err_lines[-1], "error: cannot format e2: boom")
+ self.assertEqual(
+ unstyle(str(report)),
+ "2 files reformatted, 2 files left unchanged, "
+ "2 files failed to reformat.",
+ )
+ self.assertEqual(report.return_code, 123)
+ report.path_ignored(Path("wat"), "no match")
+ self.assertEqual(len(out_lines), 0)
+ self.assertEqual(len(err_lines), 2)
+ self.assertEqual(
+ unstyle(str(report)),
+ "2 files reformatted, 2 files left unchanged, "
+ "2 files failed to reformat.",
+ )
+ self.assertEqual(report.return_code, 123)
+ report.done(Path("f4"), black.Changed.NO)
+ self.assertEqual(len(out_lines), 0)
+ self.assertEqual(len(err_lines), 2)
+ self.assertEqual(
+ unstyle(str(report)),
+ "2 files reformatted, 3 files left unchanged, "
+ "2 files failed to reformat.",
+ )
+ self.assertEqual(report.return_code, 123)
+ report.check = True
+ self.assertEqual(
+ unstyle(str(report)),
+ "2 files would be reformatted, 3 files would be left unchanged, "
+ "2 files would fail to reformat.",
+ )
+
+ def test_report_normal(self) -> None:
+ report = black.Report()
+ out_lines = []
+ err_lines = []
+
+ def out(msg: str, **kwargs: Any) -> None:
+ out_lines.append(msg)
+
+ def err(msg: str, **kwargs: Any) -> None:
+ err_lines.append(msg)
+
+ with patch("black.out", out), patch("black.err", err):
+ report.done(Path("f1"), black.Changed.NO)
+ self.assertEqual(len(out_lines), 0)
+ self.assertEqual(len(err_lines), 0)
+ self.assertEqual(unstyle(str(report)), "1 file left unchanged.")
+ self.assertEqual(report.return_code, 0)
+ report.done(Path("f2"), black.Changed.YES)
+ self.assertEqual(len(out_lines), 1)
+ self.assertEqual(len(err_lines), 0)
+ self.assertEqual(out_lines[-1], "reformatted f2")
+ self.assertEqual(
+ unstyle(str(report)), "1 file reformatted, 1 file left unchanged."
+ )
+ report.done(Path("f3"), black.Changed.CACHED)
+ self.assertEqual(len(out_lines), 1)
+ self.assertEqual(len(err_lines), 0)
+ self.assertEqual(out_lines[-1], "reformatted f2")
+ self.assertEqual(
+ unstyle(str(report)), "1 file reformatted, 2 files left unchanged."
+ )
+ self.assertEqual(report.return_code, 0)
+ report.check = True
+ self.assertEqual(report.return_code, 1)
+ report.check = False
+ report.failed(Path("e1"), "boom")
+ self.assertEqual(len(out_lines), 1)
+ self.assertEqual(len(err_lines), 1)
+ self.assertEqual(err_lines[-1], "error: cannot format e1: boom")
+ self.assertEqual(
+ unstyle(str(report)),
+ "1 file reformatted, 2 files left unchanged, "
+ "1 file failed to reformat.",
+ )
+ self.assertEqual(report.return_code, 123)
+ report.done(Path("f3"), black.Changed.YES)
+ self.assertEqual(len(out_lines), 2)
+ self.assertEqual(len(err_lines), 1)
+ self.assertEqual(out_lines[-1], "reformatted f3")
+ self.assertEqual(
+ unstyle(str(report)),
+ "2 files reformatted, 2 files left unchanged, "
+ "1 file failed to reformat.",
+ )
+ self.assertEqual(report.return_code, 123)
+ report.failed(Path("e2"), "boom")
+ self.assertEqual(len(out_lines), 2)
+ self.assertEqual(len(err_lines), 2)
+ self.assertEqual(err_lines[-1], "error: cannot format e2: boom")
+ self.assertEqual(
+ unstyle(str(report)),
+ "2 files reformatted, 2 files left unchanged, "
+ "2 files failed to reformat.",
+ )
+ self.assertEqual(report.return_code, 123)
+ report.path_ignored(Path("wat"), "no match")
+ self.assertEqual(len(out_lines), 2)
+ self.assertEqual(len(err_lines), 2)
+ self.assertEqual(
+ unstyle(str(report)),
+ "2 files reformatted, 2 files left unchanged, "
+ "2 files failed to reformat.",
+ )
+ self.assertEqual(report.return_code, 123)
+ report.done(Path("f4"), black.Changed.NO)
+ self.assertEqual(len(out_lines), 2)
+ self.assertEqual(len(err_lines), 2)
+ self.assertEqual(
+ unstyle(str(report)),
+ "2 files reformatted, 3 files left unchanged, "
+ "2 files failed to reformat.",
+ )
+ self.assertEqual(report.return_code, 123)
+ report.check = True
+ self.assertEqual(
+ unstyle(str(report)),
+ "2 files would be reformatted, 3 files would be left unchanged, "
+ "2 files would fail to reformat.",
+ )
+
def test_is_python36(self) -> None:
node = black.lib2to3_parse("def f(*, arg): ...\n")
self.assertFalse(black.is_python36(node))
self.assertTrue(black.is_python36(node))
node = black.lib2to3_parse("def f(*, arg): f'string'\n")
self.assertTrue(black.is_python36(node))
+ node = black.lib2to3_parse("123_456\n")
+ self.assertTrue(black.is_python36(node))
+ node = black.lib2to3_parse("123456\n")
+ self.assertFalse(black.is_python36(node))
source, expected = read_data("function")
node = black.lib2to3_parse(source)
self.assertTrue(black.is_python36(node))
self.assertEqual(set(), black.get_future_imports(node))
node = black.lib2to3_parse("from some.module import black\n")
self.assertEqual(set(), black.get_future_imports(node))
+ node = black.lib2to3_parse(
+ "from __future__ import unicode_literals as _unicode_literals"
+ )
+ self.assertEqual({"unicode_literals"}, black.get_future_imports(node))
+ node = black.lib2to3_parse(
+ "from __future__ import unicode_literals as _lol, print"
+ )
+ self.assertEqual({"unicode_literals", "print"}, black.get_future_imports(node))
def test_debug_visitor(self) -> None:
source, _ = read_data("debug_visitor.py")
actual = black.format_file_contents(different, line_length=ll, fast=False)
self.assertEqual(expected, actual)
invalid = "return if you can"
- with self.assertRaises(ValueError) as e:
+ with self.assertRaises(black.InvalidInput) as e:
black.format_file_contents(invalid, line_length=ll, fast=False)
self.assertEqual(str(e.exception), "Cannot parse: 1:7: return if you can")
def test_no_cache_when_stdin(self) -> None:
mode = black.FileMode.AUTO_DETECT
with cache_dir():
- result = CliRunner().invoke(black.main, ["-"], input="print('hello')")
+ 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)
self.assertFalse(cache_file.exists())
cached_but_changed.touch()
cache = {cached: black.get_cache_info(cached), cached_but_changed: (0.0, 0)}
todo, done = black.filter_cached(
- cache, [uncached, cached, cached_but_changed]
+ cache, {uncached, cached, cached_but_changed}
)
- self.assertEqual(todo, [uncached, cached_but_changed])
- self.assertEqual(done, [cached])
+ self.assertEqual(todo, {uncached, cached_but_changed})
+ self.assertEqual(done, {cached})
def test_write_cache_creates_directory_if_needed(self) -> None:
mode = black.FileMode.AUTO_DETECT
def test_check_diff_use_together(self) -> None:
with cache_dir():
# Files which will be reformatted.
- src1 = (THIS_DIR / "string_quotes.py").resolve()
+ src1 = (THIS_DIR / "data" / "string_quotes.py").resolve()
result = CliRunner().invoke(black.main, [str(src1), "--diff", "--check"])
- self.assertEqual(result.exit_code, 1)
-
+ self.assertEqual(result.exit_code, 1, result.output)
# Files which will not be reformatted.
- src2 = (THIS_DIR / "composition.py").resolve()
+ src2 = (THIS_DIR / "data" / "composition.py").resolve()
result = CliRunner().invoke(black.main, [str(src2), "--diff", "--check"])
- self.assertEqual(result.exit_code, 0)
-
+ self.assertEqual(result.exit_code, 0, result.output)
# Multi file command.
result = CliRunner().invoke(
black.main, [str(src1), str(src2), "--diff", "--check"]
def test_broken_symlink(self) -> None:
with cache_dir() as workspace:
symlink = workspace / "broken_link.py"
- symlink.symlink_to("nonexistent.py")
+ try:
+ 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)
def test_pipe_force_pyi(self) -> None:
source, expected = read_data("force_pyi")
- result = CliRunner().invoke(black.main, ["-", "-q", "--pyi"], input=source)
+ result = CliRunner().invoke(
+ black.main, ["-", "-q", "--pyi"], input=BytesIO(source.encode("utf8"))
+ )
self.assertEqual(result.exit_code, 0)
actual = result.output
self.assertFormatEqual(actual, expected)
def test_pipe_force_py36(self) -> None:
source, expected = read_data("force_py36")
- result = CliRunner().invoke(black.main, ["-", "-q", "--py36"], input=source)
+ result = CliRunner().invoke(
+ black.main, ["-", "-q", "--py36"], input=BytesIO(source.encode("utf8"))
+ )
self.assertEqual(result.exit_code, 0)
actual = result.output
self.assertFormatEqual(actual, expected)
def test_include_exclude(self) -> None:
- path = THIS_DIR / "include_exclude_tests"
+ path = THIS_DIR / "data" / "include_exclude_tests"
include = re.compile(r"\.pyi?$")
exclude = re.compile(r"/exclude/|/\.definitely_exclude/")
+ report = black.Report()
sources: List[Path] = []
expected = [
- Path(THIS_DIR / "include_exclude_tests/b/dont_exclude/a.py"),
- Path(THIS_DIR / "include_exclude_tests/b/dont_exclude/a.pyi"),
+ Path(path / "b/dont_exclude/a.py"),
+ Path(path / "b/dont_exclude/a.pyi"),
]
- sources.extend(black.gen_python_files_in_dir(path, include, exclude))
+ this_abs = THIS_DIR.resolve()
+ sources.extend(
+ black.gen_python_files_in_dir(path, this_abs, include, exclude, report)
+ )
self.assertEqual(sorted(expected), sorted(sources))
def test_empty_include(self) -> None:
- path = THIS_DIR / "include_exclude_tests"
+ path = THIS_DIR / "data" / "include_exclude_tests"
+ report = black.Report()
empty = re.compile(r"")
sources: List[Path] = []
expected = [
Path(path / "b/.definitely_exclude/a.py"),
Path(path / "b/.definitely_exclude/a.pyi"),
]
+ this_abs = THIS_DIR.resolve()
sources.extend(
black.gen_python_files_in_dir(
- path, empty, re.compile(black.DEFAULT_EXCLUDES)
+ path, this_abs, empty, re.compile(black.DEFAULT_EXCLUDES), report
)
)
self.assertEqual(sorted(expected), sorted(sources))
def test_empty_exclude(self) -> None:
- path = THIS_DIR / "include_exclude_tests"
+ path = THIS_DIR / "data" / "include_exclude_tests"
+ report = black.Report()
empty = re.compile(r"")
sources: List[Path] = []
expected = [
Path(path / "b/.definitely_exclude/a.py"),
Path(path / "b/.definitely_exclude/a.pyi"),
]
+ this_abs = THIS_DIR.resolve()
sources.extend(
black.gen_python_files_in_dir(
- path, re.compile(black.DEFAULT_INCLUDES), empty
+ path, this_abs, re.compile(black.DEFAULT_INCLUDES), empty, report
)
)
self.assertEqual(sorted(expected), sorted(sources))
result = CliRunner().invoke(black.main, ["-", option, "**()(!!*)"])
self.assertEqual(result.exit_code, 2)
+ def test_preserves_line_endings(self) -> None:
+ with TemporaryDirectory() as workspace:
+ test_file = Path(workspace) / "test.py"
+ for nl in ["\n", "\r\n"]:
+ contents = nl.join(["def f( ):", " pass"])
+ test_file.write_bytes(contents.encode())
+ ff(test_file, write_back=black.WriteBack.YES)
+ updated_contents: bytes = test_file.read_bytes()
+ self.assertIn(nl.encode(), updated_contents)
+ if nl == "\n":
+ self.assertNotIn(b"\r\n", updated_contents)
+
+ def test_preserves_line_endings_via_stdin(self) -> None:
+ for nl in ["\n", "\r\n"]:
+ contents = nl.join(["def f( ):", " pass"])
+ runner = BlackRunner()
+ result = runner.invoke(
+ black.main, ["-", "--fast"], input=BytesIO(contents.encode("utf8"))
+ )
+ self.assertEqual(result.exit_code, 0)
+ output = runner.stdout_bytes
+ self.assertIn(nl.encode("utf8"), output)
+ if nl == "\n":
+ self.assertNotIn(b"\r\n", output)
+
+ def test_assert_equivalent_different_asts(self) -> None:
+ with self.assertRaises(AssertionError):
+ black.assert_equivalent("{}", "None")
+
+ def test_symlink_out_of_root_directory(self) -> None:
+ path = MagicMock()
+ root = THIS_DIR
+ child = MagicMock()
+ include = re.compile(black.DEFAULT_INCLUDES)
+ exclude = re.compile(black.DEFAULT_EXCLUDES)
+ report = black.Report()
+ # `child` should behave like a symlink which resolved path is clearly
+ # outside of the `root` directory.
+ path.iterdir.return_value = [child]
+ child.resolve.return_value = Path("/a/b/c")
+ child.is_symlink.return_value = True
+ try:
+ list(black.gen_python_files_in_dir(path, root, include, exclude, report))
+ except ValueError as ve:
+ self.fail(f"`get_python_files_in_dir()` failed: {ve}")
+ path.iterdir.assert_called_once()
+ child.resolve.assert_called_once()
+ child.is_symlink.assert_called_once()
+ # `child` should behave like a strange file which resolved path is clearly
+ # outside of the `root` directory.
+ child.is_symlink.return_value = False
+ with self.assertRaises(ValueError):
+ list(black.gen_python_files_in_dir(path, root, include, exclude, report))
+ path.iterdir.assert_called()
+ self.assertEqual(path.iterdir.call_count, 2)
+ child.resolve.assert_called()
+ self.assertEqual(child.resolve.call_count, 2)
+ child.is_symlink.assert_called()
+ self.assertEqual(child.is_symlink.call_count, 2)
+
+ def test_shhh_click(self) -> None:
+ try:
+ from click import _unicodefun # type: ignore
+ except ModuleNotFoundError:
+ self.skipTest("Incompatible Click version")
+ if not hasattr(_unicodefun, "_verify_python3_env"):
+ self.skipTest("Incompatible Click version")
+ # First, let's see if Click is crashing with a preferred ASCII charset.
+ with patch("locale.getpreferredencoding") as gpe:
+ gpe.return_value = "ASCII"
+ with self.assertRaises(RuntimeError):
+ _unicodefun._verify_python3_env()
+ # Now, let's silence Click...
+ black.patch_click()
+ # ...and confirm it's silent.
+ with patch("locale.getpreferredencoding") as gpe:
+ gpe.return_value = "ASCII"
+ try:
+ _unicodefun._verify_python3_env()
+ except RuntimeError as re:
+ self.fail(f"`patch_click()` failed, exception still raised: {re}")
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_request_needs_formatting(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ response = await 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')
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_request_no_change(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ response = await client.post("/", data=b'print("hello world")\n')
+ self.assertEqual(response.status, 204)
+ self.assertEqual(await response.read(), b"")
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_request_syntax_error(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ response = await 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)}",
+ )
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_unsupported_version(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ response = await client.post(
+ "/", data=b"what", headers={blackd.VERSION_HEADER: "2"}
+ )
+ self.assertEqual(response.status, 501)
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_supported_version(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ response = await client.post(
+ "/", data=b"what", headers={blackd.VERSION_HEADER: "1"}
+ )
+ self.assertEqual(response.status, 200)
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_invalid_python_variant(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ response = await client.post(
+ "/", data=b"what", headers={blackd.PYTHON_VARIANT_HEADER: "lol"}
+ )
+ self.assertEqual(response.status, 400)
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_pyi(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ source, expected = read_data("stub.pyi")
+ response = await client.post(
+ "/", data=source, headers={blackd.PYTHON_VARIANT_HEADER: "pyi"}
+ )
+ self.assertEqual(response.status, 200)
+ self.assertEqual(await response.text(), expected)
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_py36(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ response = await client.post(
+ "/",
+ data=(
+ "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"
+ ),
+ headers={blackd.PYTHON_VARIANT_HEADER: "3.6"},
+ )
+ self.assertEqual(response.status, 200)
+ response = await client.post(
+ "/",
+ data=(
+ "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"
+ ),
+ headers={blackd.PYTHON_VARIANT_HEADER: "3.5"},
+ )
+ self.assertEqual(response.status, 204)
+ response = await client.post(
+ "/",
+ data=(
+ "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"
+ ),
+ headers={blackd.PYTHON_VARIANT_HEADER: "2"},
+ )
+ self.assertEqual(response.status, 204)
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_fast(self) -> None:
+ with open(os.devnull, "w") as dn, redirect_stderr(dn):
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ response = await client.post("/", data=b"ur'hello'")
+ self.assertEqual(response.status, 500)
+ self.assertIn("failed to parse source file", await response.text())
+ response = await client.post(
+ "/", data=b"ur'hello'", headers={blackd.FAST_OR_SAFE_HEADER: "fast"}
+ )
+ self.assertEqual(response.status, 200)
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_line_length(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ response = await client.post(
+ "/", data=b'print("hello")\n', headers={blackd.LINE_LENGTH_HEADER: "7"}
+ )
+ self.assertEqual(response.status, 200)
+
+ @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
+ @async_test
+ async def test_blackd_invalid_line_length(self) -> None:
+ app = blackd.make_app()
+ async with TestClient(TestServer(app)) as client:
+ response = await client.post(
+ "/",
+ data=b'print("hello")\n',
+ headers={blackd.LINE_LENGTH_HEADER: "NaN"},
+ )
+ self.assertEqual(response.status, 400)
+
+ @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)
+
if __name__ == "__main__":
- unittest.main()
+ unittest.main(module="test_black")
projects / etc / vim.git / blobdiff