X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/33baccd88ef45ebbb35e4c2ad7b87c7b91432f55..087fedb17eeb6e9b1189792ca046ffa6d98579fe:/tests/test_black.py diff --git a/tests/test_black.py b/tests/test_black.py index 1271290..db46499 100644 --- a/tests/test_black.py +++ b/tests/test_black.py @@ -1,43 +1,67 @@ #!/usr/bin/env python3 import asyncio +import logging 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 +from unittest.mock import patch, MagicMock from click import unstyle 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 + +try: + import blackd + from aiohttp.test_utils import TestClient, TestServer +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: 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: @@ -78,13 +102,25 @@ def event_loop(close: bool) -> Iterator[None]: 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 @@ -95,6 +131,8 @@ class BlackRunner(CliRunner): 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 @@ -120,13 +158,22 @@ class BlackTestCase(unittest.TestCase): 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 = "" @@ -141,32 +188,33 @@ class BlackTestCase(unittest.TestCase): @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) - 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) 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) - 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") - stderrbuf = BytesIO() - result = BlackRunner(stderrbuf).invoke( - black.main, ["-", "--fast", f"--line-length={ll}"], input=source + source, expected = read_data("../black", data=False) + result = BlackRunner().invoke( + black.main, + ["-", "--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( @@ -175,9 +223,16 @@ class BlackTestCase(unittest.TestCase): ) source, _ = read_data("expression.py") expected, _ = read_data("expression.diff") - stderrbuf = BytesIO() - result = BlackRunner(stderrbuf).invoke( - black.main, ["-", "--fast", f"--line-length={ll}", "--diff"], input=source + config = THIS_DIR / "data" / "empty_pyproject.toml" + args = [ + "-", + "--fast", + f"--line-length={black.DEFAULT_LINE_LENGTH}", + "--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) @@ -186,11 +241,11 @@ class BlackTestCase(unittest.TestCase): @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) - 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) @@ -199,7 +254,7 @@ class BlackTestCase(unittest.TestCase): 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: @@ -207,7 +262,7 @@ class BlackTestCase(unittest.TestCase): 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_expression(self) -> None: @@ -215,7 +270,7 @@ class BlackTestCase(unittest.TestCase): 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_expression_ff(self) -> None: source, expected = read_data("expression") @@ -229,7 +284,7 @@ class BlackTestCase(unittest.TestCase): 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") @@ -239,11 +294,8 @@ class BlackTestCase(unittest.TestCase): 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) @@ -255,7 +307,7 @@ class BlackTestCase(unittest.TestCase): 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) @@ -265,7 +317,7 @@ class BlackTestCase(unittest.TestCase): 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_string_quotes(self) -> None: @@ -273,12 +325,12 @@ class BlackTestCase(unittest.TestCase): 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: @@ -286,7 +338,7 @@ class BlackTestCase(unittest.TestCase): 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: @@ -294,7 +346,7 @@ class BlackTestCase(unittest.TestCase): 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: @@ -302,7 +354,7 @@ class BlackTestCase(unittest.TestCase): 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: @@ -310,7 +362,7 @@ class BlackTestCase(unittest.TestCase): 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: @@ -318,7 +370,7 @@ class BlackTestCase(unittest.TestCase): 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: @@ -326,7 +378,15 @@ class BlackTestCase(unittest.TestCase): 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_cantfit(self) -> None: @@ -334,7 +394,7 @@ class BlackTestCase(unittest.TestCase): 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: @@ -342,7 +402,7 @@ class BlackTestCase(unittest.TestCase): 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: @@ -350,7 +410,7 @@ class BlackTestCase(unittest.TestCase): 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: @@ -358,7 +418,7 @@ class BlackTestCase(unittest.TestCase): 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_string_prefixes(self) -> None: @@ -366,7 +426,32 @@ class BlackTestCase(unittest.TestCase): 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") + 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, 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, black.FileMode()) @patch("black.dump_to_file", dump_to_stderr) def test_python2(self) -> None: @@ -374,22 +459,32 @@ class BlackTestCase(unittest.TestCase): 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_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_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_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, black.FileMode()) @patch("black.dump_to_file", dump_to_stderr) def test_fmtonoff(self) -> None: @@ -397,7 +492,15 @@ class BlackTestCase(unittest.TestCase): 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: + source, expected = read_data("fmtonoff2") + 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_remove_empty_parentheses_after_class(self) -> None: @@ -405,7 +508,7 @@ class BlackTestCase(unittest.TestCase): 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: @@ -413,7 +516,28 @@ class BlackTestCase(unittest.TestCase): 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: + source, expected = read_data("bracketmatch") + actual = fs(source) + self.assertFormatEqual(expected, actual) + black.assert_equivalent(source, actual) + black.assert_stable(source, actual, black.FileMode()) + + def test_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(fs(contents_spc), contents_spc) + self.assertFormatEqual(fs(contents_tab), contents_spc) + + 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(fs(contents_tab), contents_spc) + self.assertFormatEqual(fs(contents_spc), contents_spc) def test_report_verbose(self) -> None: report = black.Report(verbose=True) @@ -687,23 +811,31 @@ class BlackTestCase(unittest.TestCase): "2 files would fail to reformat.", ) - def test_is_python36(self) -> None: + 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}) 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.assertEqual(black.get_features_used(node), {Feature.NUMERIC_UNDERSCORES}) + node = black.lib2to3_parse("123456\n") + self.assertEqual(black.get_features_used(node), set()) source, expected = read_data("function") node = black.lib2to3_parse(source) - self.assertTrue(black.is_python36(node)) + self.assertEqual( + black.get_features_used(node), {Feature.TRAILING_COMMA, Feature.F_STRINGS} + ) node = black.lib2to3_parse(expected) - self.assertTrue(black.is_python36(node)) + self.assertEqual( + black.get_features_used(node), {Feature.TRAILING_COMMA, Feature.F_STRINGS} + ) 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") @@ -726,6 +858,14 @@ class BlackTestCase(unittest.TestCase): 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") @@ -753,21 +893,22 @@ class BlackTestCase(unittest.TestCase): 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: @@ -797,35 +938,33 @@ class BlackTestCase(unittest.TestCase): 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 ): @@ -835,48 +974,48 @@ class BlackTestCase(unittest.TestCase): 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="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) + 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)) @@ -897,15 +1036,15 @@ class BlackTestCase(unittest.TestCase): 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 ): @@ -915,42 +1054,33 @@ class BlackTestCase(unittest.TestCase): 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 / "string_quotes.py").resolve() - result = CliRunner().invoke(black.main, [str(src1), "--diff", "--check"]) - self.assertEqual(result.exit_code, 1) - + src1 = (THIS_DIR / "data" / "string_quotes.py").resolve() + self.invokeBlack([str(src1), "--diff", "--check"], exit_code=1) # Files which will not be reformatted. - src2 = (THIS_DIR / "composition.py").resolve() - result = CliRunner().invoke(black.main, [str(src2), "--diff", "--check"]) - self.assertEqual(result.exit_code, 0) - + src2 = (THIS_DIR / "data" / "composition.py").resolve() + 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: @@ -959,43 +1089,42 @@ class BlackTestCase(unittest.TestCase): 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 = [ @@ -1005,49 +1134,49 @@ class BlackTestCase(unittest.TestCase): 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) 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_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 = [ @@ -1057,37 +1186,38 @@ class BlackTestCase(unittest.TestCase): 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=source) + result = CliRunner().invoke( + black.main, + ["-", "-q", "--target-version=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"), ] this_abs = THIS_DIR.resolve() sources.extend( @@ -1096,7 +1226,7 @@ class BlackTestCase(unittest.TestCase): 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] = [] @@ -1120,7 +1250,7 @@ class BlackTestCase(unittest.TestCase): 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] = [] @@ -1142,8 +1272,7 @@ class BlackTestCase(unittest.TestCase): 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: @@ -1153,14 +1282,259 @@ class BlackTestCase(unittest.TestCase): 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: + 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}") + + 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") + @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: + + async def check(header_value: str, expected_status: int = 400) -> None: + response = await 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") + + @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_python_variant(self) -> None: + app = blackd.make_app() + 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 with TestClient(TestServer(app)) as client: + + async def check(header_value: str, expected_status: int) -> None: + response = await client.post( + "/", data=code, headers={blackd.PYTHON_VARIANT_HEADER: header_value} + ) + self.assertEqual(response.status, expected_status) + + await check("3.6", 200) + await check("py3.6", 200) + await check("3.5,3.7", 200) + await check("3.5,py3.7", 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) + + @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")