#!/usr/bin/env python3
import asyncio
from concurrent.futures import ThreadPoolExecutor
-from contextlib import contextmanager
-from functools import partial
+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, BinaryIO, Generator, List, Tuple, Iterator
+from typing import (
+ Any,
+ BinaryIO,
+ Callable,
+ Coroutine,
+ Generator,
+ List,
+ Tuple,
+ Iterator,
+ TypeVar,
+)
import unittest
from unittest.mock import patch, MagicMock
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)
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:
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, stderrbuf: BinaryIO) -> None:
- self.stderrbuf = stderrbuf
+ def __init__(self) -> None:
+ self.stderrbuf = BytesIO()
+ self.stdoutbuf = BytesIO()
+ self.stdout_bytes = b""
+ self.stderr_bytes = b""
super().__init__()
@contextmanager
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
def test_piping(self) -> None:
source, expected = read_data("../black", data=False)
- stderrbuf = BytesIO()
- result = BlackRunner(stderrbuf).invoke(
- black.main, ["-", "--fast", f"--line-length={ll}"], input=source
+ 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)
source, _ = read_data("expression.py")
expected, _ = read_data("expression.diff")
config = THIS_DIR / "data" / "empty_pyproject.toml"
- stderrbuf = BytesIO()
args = ["-", "--fast", f"--line-length={ll}", "--diff", f"--config={config}"]
- result = BlackRunner(stderrbuf).invoke(black.main, args, input=source)
+ 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
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"
)
- stderrbuf = BytesIO()
try:
- result = BlackRunner(stderrbuf).invoke(
- black.main, ["--diff", str(tmp_file)]
- )
+ result = BlackRunner().invoke(black.main, ["--diff", str(tmp_file)])
self.assertEqual(result.exit_code, 0)
finally:
os.unlink(tmp_file)
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_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 = []
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())
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)
-
# 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)
-
# Multi file command.
result = CliRunner().invoke(
black.main, [str(src1), str(src2), "--diff", "--check"]
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)
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) # type: ignore
+ self.assertIn(nl.encode(), updated_contents)
if nl == "\n":
- self.assertNotIn(b"\r\n", updated_contents) # type: ignore
+ 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:
- # prepare argumens
path = MagicMock()
root = THIS_DIR
child = MagicMock()
include = re.compile(black.DEFAULT_INCLUDES)
exclude = re.compile(black.DEFAULT_EXCLUDES)
report = black.Report()
-
- # set the behavior of mock arguments
- # child should behave like a symlink which resolved path is clearly
- # outside of the root directory
+ # `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
-
- # call the method
- # it should not raise any error
- list(black.gen_python_files_in_dir(path, root, include, exclude, report))
-
- # check the call of the methods of the mock objects
+ 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()
-
- # set the behavior of mock arguments
- # child should behave like a strange file which resolved path is clearly
- # outside of the root directory
+ # `child` should behave like a strange file which resolved path is clearly
+ # outside of the `root` directory.
child.is_symlink.return_value = False
-
- # call the method
- # it should raise a ValueError
with self.assertRaises(ValueError):
list(black.gen_python_files_in_dir(path, root, include, exclude, report))
-
- # check the call of the methods of the mock objects
path.iterdir.assert_called()
self.assertEqual(path.iterdir.call_count, 2)
child.resolve.assert_called()
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(module="test_black")
projects / etc / vim.git / blobdiff