X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/6b5753a41781ef7a8746aeea52c26e07f4b43c27..e76adbecb8c3b62631868332c3b632363c7c16b4:/tests/test_black.py?ds=inline diff --git a/tests/test_black.py b/tests/test_black.py index edcf720..998ecfc 100644 --- a/tests/test_black.py +++ b/tests/test_black.py @@ -5,9 +5,9 @@ import logging from concurrent.futures import ThreadPoolExecutor from contextlib import contextmanager from dataclasses import replace -from functools import partial import inspect -from io import BytesIO, TextIOWrapper +import io +from io import BytesIO import os from pathlib import Path from platform import system @@ -17,15 +17,13 @@ from tempfile import TemporaryDirectory import types from typing import ( Any, - BinaryIO, Callable, Dict, - Generator, List, - Tuple, Iterator, TypeVar, ) +import pytest import unittest from unittest.mock import patch, MagicMock @@ -35,62 +33,41 @@ from click.testing import CliRunner import black from black import Feature, TargetVersion - -try: - import blackd - from aiohttp.test_utils import AioHTTPTestCase, unittest_run_loop - from aiohttp import web -except ImportError: - has_blackd_deps = False -else: - has_blackd_deps = True +from black.cache import get_cache_file +from black.debug import DebugVisitor +from black.output import diff, color_diff +from black.report import Report +import black.files from pathspec import PathSpec # Import other test classes -from .test_primer import PrimerCLITests # noqa: F401 +from tests.util import ( + THIS_DIR, + change_directory, + read_data, + DETERMINISTIC_HEADER, + BlackBaseTestCase, + DEFAULT_MODE, + fs, + ff, + dump_to_stderr, +) -DEFAULT_MODE = black.FileMode(experimental_string_processing=True) -ff = partial(black.format_file_in_place, mode=DEFAULT_MODE, fast=True) -fs = partial(black.format_str, mode=DEFAULT_MODE) THIS_FILE = Path(__file__) -THIS_DIR = THIS_FILE.parent -PROJECT_ROOT = THIS_DIR.parent -DETERMINISTIC_HEADER = "[Deterministic header]" -EMPTY_LINE = "# EMPTY LINE WITH WHITESPACE" + " (this comment will be removed)" -PY36_ARGS = [ - f"--target-version={version.name.lower()}" for version in black.PY36_VERSIONS -] +PY36_VERSIONS = { + TargetVersion.PY36, + TargetVersion.PY37, + TargetVersion.PY38, + TargetVersion.PY39, +} +PY36_ARGS = [f"--target-version={version.name.lower()}" for version in PY36_VERSIONS] T = TypeVar("T") R = TypeVar("R") - -def dump_to_stderr(*output: str) -> str: - return "\n" + "\n".join(output) + "\n" - - -def read_data(name: str, data: bool = True) -> Tuple[str, str]: - """read_data('test_name') -> 'input', 'output'""" - if not name.endswith((".py", ".pyi", ".out", ".diff")): - name += ".py" - _input: List[str] = [] - _output: List[str] = [] - base_dir = THIS_DIR / "data" if data else PROJECT_ROOT - with open(base_dir / name, "r", encoding="utf8") as test: - lines = test.readlines() - result = _input - for line in lines: - line = line.replace(EMPTY_LINE, "") - if line.rstrip() == "# output": - result = _output - continue - - result.append(line) - if _input and not _output: - # If there's no output marker, treat the entire file as already pre-formatted. - _output = _input[:] - return "".join(_input).strip() + "\n", "".join(_output).strip() + "\n" +# Match the time output in a diff, but nothing else +DIFF_TIME = re.compile(r"\t[\d-:+\. ]+") @contextmanager @@ -99,7 +76,7 @@ def cache_dir(exists: bool = True) -> Iterator[Path]: cache_dir = Path(workspace) if not exists: cache_dir = cache_dir / "new" - with patch("black.CACHE_DIR", cache_dir): + with patch("black.cache.CACHE_DIR", cache_dir): yield cache_dir @@ -115,17 +92,6 @@ def event_loop() -> Iterator[None]: loop.close() -@contextmanager -def skip_if_exception(e: str) -> Iterator[None]: - try: - yield - except Exception as exc: - if exc.__class__.__name__ == e: - unittest.skip(f"Encountered expected exception {exc}, skipping") - else: - raise - - class FakeContext(click.Context): """A fake click Context for when calling functions that need it.""" @@ -141,53 +107,13 @@ class FakeParameter(click.Parameter): 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""" + """Make sure STDOUT and STDERR are kept separate when testing Black via its CLI.""" 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 - _diffThreshold = 2 ** 20 - - def assertFormatEqual(self, expected: str, actual: str) -> None: - if actual != expected and not os.environ.get("SKIP_AST_PRINT"): - bdv: black.DebugVisitor[Any] - black.out("Expected tree:", fg="green") - try: - exp_node = black.lib2to3_parse(expected) - bdv = black.DebugVisitor() - list(bdv.visit(exp_node)) - except Exception as ve: - black.err(str(ve)) - black.out("Actual tree:", fg="red") - try: - exp_node = black.lib2to3_parse(actual) - bdv = black.DebugVisitor() - list(bdv.visit(exp_node)) - except Exception as ve: - black.err(str(ve)) - self.assertMultiLineEqual(expected, actual) + super().__init__(mix_stderr=False) + +class BlackTestCase(BlackBaseTestCase): def invokeBlack( self, args: List[str], exit_code: int = 0, ignore_config: bool = True ) -> None: @@ -195,27 +121,19 @@ class BlackTestCase(unittest.TestCase): if ignore_config: args = ["--verbose", "--config", str(THIS_DIR / "empty.toml"), *args] result = runner.invoke(black.main, args) + assert result.stdout_bytes is not None + assert result.stderr_bytes is not None self.assertEqual( result.exit_code, exit_code, msg=( f"Failed with args: {args}\n" - f"stdout: {runner.stdout_bytes.decode()!r}\n" - f"stderr: {runner.stderr_bytes.decode()!r}\n" + f"stdout: {result.stdout_bytes.decode()!r}\n" + f"stderr: {result.stderr_bytes.decode()!r}\n" f"exception: {result.exception}" ), ) - @patch("black.dump_to_file", dump_to_stderr) - def checkSourceFile(self, name: str, mode: black.FileMode = DEFAULT_MODE) -> None: - path = THIS_DIR.parent / name - source, expected = read_data(str(path), data=False) - actual = fs(source, mode=mode) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, mode) - self.assertFalse(ff(path)) - @patch("black.dump_to_file", dump_to_stderr) def test_empty(self) -> None: source = expected = "" @@ -235,45 +153,6 @@ class BlackTestCase(unittest.TestCase): os.unlink(tmp_file) self.assertFormatEqual(expected, actual) - def test_self(self) -> None: - self.checkSourceFile("tests/test_black.py") - - def test_black(self) -> None: - self.checkSourceFile("src/black/__init__.py") - - def test_pygram(self) -> None: - self.checkSourceFile("src/blib2to3/pygram.py") - - def test_pytree(self) -> None: - self.checkSourceFile("src/blib2to3/pytree.py") - - def test_conv(self) -> None: - self.checkSourceFile("src/blib2to3/pgen2/conv.py") - - def test_driver(self) -> None: - self.checkSourceFile("src/blib2to3/pgen2/driver.py") - - def test_grammar(self) -> None: - self.checkSourceFile("src/blib2to3/pgen2/grammar.py") - - def test_literals(self) -> None: - self.checkSourceFile("src/blib2to3/pgen2/literals.py") - - def test_parse(self) -> None: - self.checkSourceFile("src/blib2to3/pgen2/parse.py") - - def test_pgen(self) -> None: - self.checkSourceFile("src/blib2to3/pgen2/pgen.py") - - def test_tokenize(self) -> None: - self.checkSourceFile("src/blib2to3/pgen2/tokenize.py") - - def test_token(self) -> None: - self.checkSourceFile("src/blib2to3/pgen2/token.py") - - def test_setup(self) -> None: - self.checkSourceFile("setup.py") - def test_piping(self) -> None: source, expected = read_data("src/black/__init__", data=False) result = BlackRunner().invoke( @@ -283,8 +162,9 @@ class BlackTestCase(unittest.TestCase): ) self.assertEqual(result.exit_code, 0) self.assertFormatEqual(expected, result.output) - black.assert_equivalent(source, result.output) - black.assert_stable(source, result.output, DEFAULT_MODE) + if source != result.output: + black.assert_equivalent(source, result.output) + black.assert_stable(source, result.output, DEFAULT_MODE) def test_piping_diff(self) -> None: diff_header = re.compile( @@ -331,22 +211,6 @@ class BlackTestCase(unittest.TestCase): self.assertIn("\033[31m", actual) self.assertIn("\033[0m", actual) - @patch("black.dump_to_file", dump_to_stderr) - def test_function(self) -> None: - source, expected = read_data("function") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_function2(self) -> None: - source, expected = read_data("function2") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - @patch("black.dump_to_file", dump_to_stderr) def _test_wip(self) -> None: source, expected = read_data("wip") @@ -362,14 +226,6 @@ class BlackTestCase(unittest.TestCase): black.assert_equivalent(source, actual) black.assert_stable(source, actual, black.FileMode()) - @patch("black.dump_to_file", dump_to_stderr) - def test_function_trailing_comma(self) -> None: - source, expected = read_data("function_trailing_comma") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - @unittest.expectedFailure @patch("black.dump_to_file", dump_to_stderr) def test_trailing_comma_optional_parens_stability1(self) -> None: @@ -392,11 +248,21 @@ class BlackTestCase(unittest.TestCase): black.assert_stable(source, actual, DEFAULT_MODE) @patch("black.dump_to_file", dump_to_stderr) - def test_expression(self) -> None: - source, expected = read_data("expression") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) + def test_trailing_comma_optional_parens_stability1_pass2(self) -> None: + source, _expected = read_data("trailing_comma_optional_parens1") + actual = fs(fs(source)) # this is what `format_file_contents` does with --safe + black.assert_stable(source, actual, DEFAULT_MODE) + + @patch("black.dump_to_file", dump_to_stderr) + def test_trailing_comma_optional_parens_stability2_pass2(self) -> None: + source, _expected = read_data("trailing_comma_optional_parens2") + actual = fs(fs(source)) # this is what `format_file_contents` does with --safe + black.assert_stable(source, actual, DEFAULT_MODE) + + @patch("black.dump_to_file", dump_to_stderr) + def test_trailing_comma_optional_parens_stability3_pass2(self) -> None: + source, _expected = read_data("trailing_comma_optional_parens3") + actual = fs(fs(source)) # this is what `format_file_contents` does with --safe black.assert_stable(source, actual, DEFAULT_MODE) @patch("black.dump_to_file", dump_to_stderr) @@ -408,6 +274,23 @@ class BlackTestCase(unittest.TestCase): if sys.version_info >= (3, 8): black.assert_equivalent(source, actual) + @patch("black.dump_to_file", dump_to_stderr) + def test_pep_572_remove_parens(self) -> None: + source, expected = read_data("pep_572_remove_parens") + actual = fs(source) + self.assertFormatEqual(expected, actual) + black.assert_stable(source, actual, DEFAULT_MODE) + if sys.version_info >= (3, 8): + black.assert_equivalent(source, actual) + + @patch("black.dump_to_file", dump_to_stderr) + def test_pep_572_do_not_remove_parens(self) -> None: + source, expected = read_data("pep_572_do_not_remove_parens") + # the AST safety checks will fail, but that's expected, just make sure no + # parentheses are touched + actual = black.format_str(source, mode=DEFAULT_MODE) + self.assertFormatEqual(expected, actual) + def test_pep_572_version_detection(self) -> None: source, _ = read_data("pep_572") root = black.lib2to3_parse(source) @@ -432,6 +315,7 @@ class BlackTestCase(unittest.TestCase): def test_expression_diff(self) -> None: source, _ = read_data("expression.py") + config = THIS_DIR / "data" / "empty_pyproject.toml" expected, _ = read_data("expression.diff") tmp_file = Path(black.dump_to_file(source)) diff_header = re.compile( @@ -439,13 +323,14 @@ class BlackTestCase(unittest.TestCase): r"\d\d:\d\d:\d\d\.\d\d\d\d\d\d \+\d\d\d\d" ) try: - result = BlackRunner().invoke(black.main, ["--diff", str(tmp_file)]) + result = BlackRunner().invoke( + black.main, ["--diff", str(tmp_file), f"--config={config}"] + ) self.assertEqual(result.exit_code, 0) finally: 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 = ( @@ -457,11 +342,12 @@ class BlackTestCase(unittest.TestCase): def test_expression_diff_with_color(self) -> None: source, _ = read_data("expression.py") + config = THIS_DIR / "data" / "empty_pyproject.toml" expected, _ = read_data("expression.diff") tmp_file = Path(black.dump_to_file(source)) try: result = BlackRunner().invoke( - black.main, ["--diff", "--color", str(tmp_file)] + black.main, ["--diff", "--color", str(tmp_file), f"--config={config}"] ) finally: os.unlink(tmp_file) @@ -474,14 +360,6 @@ class BlackTestCase(unittest.TestCase): self.assertIn("\033[31m", actual) self.assertIn("\033[0m", actual) - @patch("black.dump_to_file", dump_to_stderr) - def test_fstring(self) -> None: - source, expected = read_data("fstring") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - @patch("black.dump_to_file", dump_to_stderr) def test_pep_570(self) -> None: source, expected = read_data("pep_570") @@ -502,24 +380,17 @@ class BlackTestCase(unittest.TestCase): @patch("black.dump_to_file", dump_to_stderr) def test_string_quotes(self) -> None: source, expected = read_data("string_quotes") - actual = fs(source) + mode = black.Mode(experimental_string_processing=True) + actual = fs(source, mode=mode) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - mode = replace(DEFAULT_MODE, string_normalization=False) + black.assert_stable(source, actual, mode) + mode = replace(mode, string_normalization=False) not_normalized = fs(source, mode=mode) self.assertFormatEqual(source.replace("\\\n", ""), not_normalized) black.assert_equivalent(source, not_normalized) black.assert_stable(source, not_normalized, mode=mode) - @patch("black.dump_to_file", dump_to_stderr) - def test_docstring(self) -> None: - source, expected = read_data("docstring") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - @patch("black.dump_to_file", dump_to_stderr) def test_docstring_no_string_normalization(self) -> None: """Like test_docstring but with string normalization off.""" @@ -530,14 +401,6 @@ class BlackTestCase(unittest.TestCase): black.assert_equivalent(source, actual) black.assert_stable(source, actual, mode) - def test_long_strings(self) -> None: - """Tests for splitting long strings.""" - source, expected = read_data("long_strings") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - def test_long_strings_flag_disabled(self) -> None: """Tests for turning off the string processing logic.""" source, expected = read_data("long_strings_flag_disabled") @@ -546,166 +409,10 @@ class BlackTestCase(unittest.TestCase): self.assertFormatEqual(expected, actual) black.assert_stable(expected, actual, mode) - @patch("black.dump_to_file", dump_to_stderr) - def test_long_strings__edge_case(self) -> None: - """Edge-case tests for splitting long strings.""" - source, expected = read_data("long_strings__edge_case") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_long_strings__regression(self) -> None: - """Regression tests for splitting long strings.""" - source, expected = read_data("long_strings__regression") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_slices(self) -> None: - source, expected = read_data("slices") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_percent_precedence(self) -> None: - source, expected = read_data("percent_precedence") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_comments(self) -> None: - source, expected = read_data("comments") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_comments2(self) -> None: - source, expected = read_data("comments2") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_comments3(self) -> None: - source, expected = read_data("comments3") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_comments4(self) -> None: - source, expected = read_data("comments4") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_comments5(self) -> None: - source, expected = read_data("comments5") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_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, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_comments7(self) -> None: - source, expected = read_data("comments7") - mode = replace(DEFAULT_MODE, target_versions={black.TargetVersion.PY38}) - actual = fs(source, mode=mode) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_comment_after_escaped_newline(self) -> None: - source, expected = read_data("comment_after_escaped_newline") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_cantfit(self) -> None: - source, expected = read_data("cantfit") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_import_spacing(self) -> None: - source, expected = read_data("import_spacing") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_composition(self) -> None: - source, expected = read_data("composition") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_composition_no_trailing_comma(self) -> None: - source, expected = read_data("composition_no_trailing_comma") - mode = replace(DEFAULT_MODE, target_versions={black.TargetVersion.PY38}) - actual = fs(source, mode=mode) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_empty_lines(self) -> None: - source, expected = read_data("empty_lines") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_remove_parens(self) -> None: - source, expected = read_data("remove_parens") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_string_prefixes(self) -> None: - source, expected = read_data("string_prefixes") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - @patch("black.dump_to_file", dump_to_stderr) def test_numeric_literals(self) -> None: source, expected = read_data("numeric_literals") - mode = replace(DEFAULT_MODE, target_versions=black.PY36_VERSIONS) + mode = replace(DEFAULT_MODE, target_versions=PY36_VERSIONS) actual = fs(source, mode=mode) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) @@ -714,27 +421,38 @@ class BlackTestCase(unittest.TestCase): @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 = replace(DEFAULT_MODE, target_versions=black.PY36_VERSIONS) + mode = replace(DEFAULT_MODE, target_versions=PY36_VERSIONS) actual = fs(source, mode=mode) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) 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, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_python2(self) -> None: - source, expected = read_data("python2") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) + def test_skip_magic_trailing_comma(self) -> None: + source, _ = read_data("expression.py") + expected, _ = read_data("expression_skip_magic_trailing_comma.diff") + tmp_file = Path(black.dump_to_file(source)) + diff_header = re.compile( + rf"{re.escape(str(tmp_file))}\t\d\d\d\d-\d\d-\d\d " + r"\d\d:\d\d:\d\d\.\d\d\d\d\d\d \+\d\d\d\d" + ) + try: + result = BlackRunner().invoke(black.main, ["-C", "--diff", str(tmp_file)]) + self.assertEqual(result.exit_code, 0) + finally: + 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 = ( + "Expected diff isn't equal to the actual. If you made changes to" + " expression.py and this is an anticipated difference, overwrite" + f" tests/data/expression_skip_magic_trailing_comma.diff with {dump}" + ) + self.assertEqual(expected, actual, msg) + @pytest.mark.python2 @patch("black.dump_to_file", dump_to_stderr) def test_python2_print_function(self) -> None: source, expected = read_data("python2_print_function") @@ -742,134 +460,64 @@ class BlackTestCase(unittest.TestCase): actual = fs(source, mode=mode) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) - black.assert_stable(source, actual, mode) - - @patch("black.dump_to_file", dump_to_stderr) - def test_python2_unicode_literals(self) -> None: - source, expected = read_data("python2_unicode_literals") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_stub(self) -> None: - mode = replace(DEFAULT_MODE, is_pyi=True) - source, expected = read_data("stub.pyi") - actual = fs(source, mode=mode) - self.assertFormatEqual(expected, actual) - black.assert_stable(source, actual, mode) - - @patch("black.dump_to_file", dump_to_stderr) - def test_async_as_identifier(self) -> None: - source_path = (THIS_DIR / "data" / "async_as_identifier.py").resolve() - source, expected = read_data("async_as_identifier") - actual = fs(source) - self.assertFormatEqual(expected, actual) - major, minor = sys.version_info[:2] - if major < 3 or (major <= 3 and minor < 7): - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - # ensure black can parse this when the target is 3.6 - self.invokeBlack([str(source_path), "--target-version", "py36"]) - # but not on 3.7, because async/await is no longer an identifier - self.invokeBlack([str(source_path), "--target-version", "py37"], exit_code=123) - - @patch("black.dump_to_file", dump_to_stderr) - def test_python37(self) -> None: - source_path = (THIS_DIR / "data" / "python37.py").resolve() - source, expected = read_data("python37") - actual = fs(source) - self.assertFormatEqual(expected, actual) - major, minor = sys.version_info[:2] - if major > 3 or (major == 3 and minor >= 7): - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - # ensure black can parse this when the target is 3.7 - self.invokeBlack([str(source_path), "--target-version", "py37"]) - # but not on 3.6, because we use async as a reserved keyword - self.invokeBlack([str(source_path), "--target-version", "py36"], exit_code=123) - - @patch("black.dump_to_file", dump_to_stderr) - def test_python38(self) -> None: - source, expected = read_data("python38") - actual = fs(source) - self.assertFormatEqual(expected, actual) - major, minor = sys.version_info[:2] - if major > 3 or (major == 3 and minor >= 8): - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_fmtonoff(self) -> None: - source, expected = read_data("fmtonoff") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_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, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_fmtonoff3(self) -> None: - source, expected = read_data("fmtonoff3") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) - - @patch("black.dump_to_file", dump_to_stderr) - def test_fmtonoff4(self) -> None: - source, expected = read_data("fmtonoff4") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) + black.assert_stable(source, actual, mode) @patch("black.dump_to_file", dump_to_stderr) - def test_remove_empty_parentheses_after_class(self) -> None: - source, expected = read_data("class_blank_parentheses") - actual = fs(source) + def test_stub(self) -> None: + mode = replace(DEFAULT_MODE, is_pyi=True) + source, expected = read_data("stub.pyi") + actual = fs(source, mode=mode) self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) + black.assert_stable(source, actual, mode) @patch("black.dump_to_file", dump_to_stderr) - def test_new_line_between_class_and_code(self) -> None: - source, expected = read_data("class_methods_new_line") + def test_async_as_identifier(self) -> None: + source_path = (THIS_DIR / "data" / "async_as_identifier.py").resolve() + source, expected = read_data("async_as_identifier") actual = fs(source) self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, 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, DEFAULT_MODE) + # ensure black can parse this when the target is 3.6 + self.invokeBlack([str(source_path), "--target-version", "py36"]) + # but not on 3.7, because async/await is no longer an identifier + self.invokeBlack([str(source_path), "--target-version", "py37"], exit_code=123) @patch("black.dump_to_file", dump_to_stderr) - def test_bracket_match(self) -> None: - source, expected = read_data("bracketmatch") + def test_python37(self) -> None: + source_path = (THIS_DIR / "data" / "python37.py").resolve() + source, expected = read_data("python37") actual = fs(source) self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, 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, DEFAULT_MODE) + # ensure black can parse this when the target is 3.7 + self.invokeBlack([str(source_path), "--target-version", "py37"]) + # but not on 3.6, because we use async as a reserved keyword + self.invokeBlack([str(source_path), "--target-version", "py36"], exit_code=123) @patch("black.dump_to_file", dump_to_stderr) - def test_tuple_assign(self) -> None: - source, expected = read_data("tupleassign") + def test_python38(self) -> None: + source, expected = read_data("python38") actual = fs(source) self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) + major, minor = sys.version_info[:2] + if major > 3 or (major == 3 and minor >= 8): + black.assert_equivalent(source, actual) black.assert_stable(source, actual, DEFAULT_MODE) @patch("black.dump_to_file", dump_to_stderr) - def test_beginning_backslash(self) -> None: - source, expected = read_data("beginning_backslash") + def test_python39(self) -> None: + source, expected = read_data("python39") actual = fs(source) self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) + major, minor = sys.version_info[:2] + if major > 3 or (major == 3 and minor >= 9): + black.assert_equivalent(source, actual) black.assert_stable(source, actual, DEFAULT_MODE) def test_tab_comment_indentation(self) -> None: @@ -895,7 +543,7 @@ class BlackTestCase(unittest.TestCase): self.assertFormatEqual(contents_spc, fs(contents_tab)) def test_report_verbose(self) -> None: - report = black.Report(verbose=True) + report = Report(verbose=True) out_lines = [] err_lines = [] @@ -905,7 +553,7 @@ class BlackTestCase(unittest.TestCase): def err(msg: str, **kwargs: Any) -> None: err_lines.append(msg) - with patch("black.out", out), patch("black.err", err): + with patch("black.output._out", out), patch("black.output._err", err): report.done(Path("f1"), black.Changed.NO) self.assertEqual(len(out_lines), 1) self.assertEqual(len(err_lines), 0) @@ -997,7 +645,7 @@ class BlackTestCase(unittest.TestCase): ) def test_report_quiet(self) -> None: - report = black.Report(quiet=True) + report = Report(quiet=True) out_lines = [] err_lines = [] @@ -1007,7 +655,7 @@ class BlackTestCase(unittest.TestCase): def err(msg: str, **kwargs: Any) -> None: err_lines.append(msg) - with patch("black.out", out), patch("black.err", err): + with patch("black.output._out", out), patch("black.output._err", err): report.done(Path("f1"), black.Changed.NO) self.assertEqual(len(out_lines), 0) self.assertEqual(len(err_lines), 0) @@ -1101,7 +749,7 @@ class BlackTestCase(unittest.TestCase): def err(msg: str, **kwargs: Any) -> None: err_lines.append(msg) - with patch("black.out", out), patch("black.err", err): + with patch("black.output._out", out), patch("black.output._err", err): report.done(Path("f1"), black.Changed.NO) self.assertEqual(len(out_lines), 0) self.assertEqual(len(err_lines), 0) @@ -1212,6 +860,39 @@ class BlackTestCase(unittest.TestCase): black.lib2to3_parse(py3_only, {TargetVersion.PY36}) black.lib2to3_parse(py3_only, {TargetVersion.PY27, TargetVersion.PY36}) + def test_get_features_used_decorator(self) -> None: + # Test the feature detection of new decorator syntax + # since this makes some test cases of test_get_features_used() + # fails if it fails, this is tested first so that a useful case + # is identified + simples, relaxed = read_data("decorators") + # skip explanation comments at the top of the file + for simple_test in simples.split("##")[1:]: + node = black.lib2to3_parse(simple_test) + decorator = str(node.children[0].children[0]).strip() + self.assertNotIn( + Feature.RELAXED_DECORATORS, + black.get_features_used(node), + msg=( + f"decorator '{decorator}' follows python<=3.8 syntax" + "but is detected as 3.9+" + # f"The full node is\n{node!r}" + ), + ) + # skip the '# output' comment at the top of the output part + for relaxed_test in relaxed.split("##")[1:]: + node = black.lib2to3_parse(relaxed_test) + decorator = str(node.children[0].children[0]).strip() + self.assertIn( + Feature.RELAXED_DECORATORS, + black.get_features_used(node), + msg=( + f"decorator '{decorator}' uses python3.9+ syntax" + "but is detected as python<=3.8" + # f"The full node is\n{node!r}" + ), + ) + def test_get_features_used(self) -> None: node = black.lib2to3_parse("def f(*, arg): ...\n") self.assertEqual(black.get_features_used(node), set()) @@ -1285,8 +966,8 @@ class BlackTestCase(unittest.TestCase): def err(msg: str, **kwargs: Any) -> None: err_lines.append(msg) - with patch("black.out", out), patch("black.err", err): - black.DebugVisitor.show(source) + with patch("black.debug.out", out): + DebugVisitor.show(source) actual = "\n".join(out_lines) + "\n" log_name = "" if expected != actual: @@ -1334,7 +1015,7 @@ class BlackTestCase(unittest.TestCase): def err(msg: str, **kwargs: Any) -> None: err_lines.append(msg) - with patch("black.out", out), patch("black.err", err): + with patch("black.output._out", out), patch("black.output._err", err): with self.assertRaises(AssertionError): self.assertFormatEqual("j = [1, 2, 3]", "j = [1, 2, 3,]") @@ -1346,7 +1027,7 @@ class BlackTestCase(unittest.TestCase): def test_cache_broken_file(self) -> None: mode = DEFAULT_MODE with cache_dir() as workspace: - cache_file = black.get_cache_file(mode) + cache_file = get_cache_file(mode) with cache_file.open("w") as fobj: fobj.write("this is not a pickle") self.assertEqual(black.read_cache(mode), {}) @@ -1355,7 +1036,7 @@ class BlackTestCase(unittest.TestCase): fobj.write("print('hello')") self.invokeBlack([str(src)]) cache = black.read_cache(mode) - self.assertIn(src, cache) + self.assertIn(str(src), cache) def test_cache_single_file_already_cached(self) -> None: mode = DEFAULT_MODE @@ -1387,8 +1068,8 @@ class BlackTestCase(unittest.TestCase): with two.open("r") as fobj: self.assertEqual(fobj.read(), 'print("hello")\n') cache = black.read_cache(mode) - self.assertIn(one, cache) - self.assertIn(two, cache) + self.assertIn(str(one), cache) + self.assertIn(str(two), cache) def test_no_cache_when_writeback_diff(self) -> None: mode = DEFAULT_MODE @@ -1400,7 +1081,7 @@ class BlackTestCase(unittest.TestCase): "black.write_cache" ) as write_cache: self.invokeBlack([str(src), "--diff"]) - cache_file = black.get_cache_file(mode) + cache_file = get_cache_file(mode) self.assertFalse(cache_file.exists()) write_cache.assert_not_called() read_cache.assert_not_called() @@ -1415,7 +1096,7 @@ class BlackTestCase(unittest.TestCase): "black.write_cache" ) as write_cache: self.invokeBlack([str(src), "--diff", "--color"]) - cache_file = black.get_cache_file(mode) + cache_file = get_cache_file(mode) self.assertFalse(cache_file.exists()) write_cache.assert_not_called() read_cache.assert_not_called() @@ -1453,7 +1134,7 @@ class BlackTestCase(unittest.TestCase): black.main, ["-"], input=BytesIO(b"print('hello')") ) self.assertEqual(result.exit_code, 0) - cache_file = black.get_cache_file(mode) + cache_file = get_cache_file(mode) self.assertFalse(cache_file.exists()) def test_read_cache_no_cachefile(self) -> None: @@ -1468,8 +1149,8 @@ class BlackTestCase(unittest.TestCase): src.touch() black.write_cache({}, [src], mode) cache = black.read_cache(mode) - self.assertIn(src, cache) - self.assertEqual(cache[src], black.get_cache_info(src)) + self.assertIn(str(src), cache) + self.assertEqual(cache[str(src)], black.get_cache_info(src)) def test_filter_cached(self) -> None: with TemporaryDirectory() as workspace: @@ -1480,7 +1161,10 @@ class BlackTestCase(unittest.TestCase): uncached.touch() cached.touch() cached_but_changed.touch() - cache = {cached: black.get_cache_info(cached), cached_but_changed: (0.0, 0)} + cache = { + str(cached): black.get_cache_info(cached), + str(cached_but_changed): (0.0, 0), + } todo, done = black.filter_cached( cache, {uncached, cached, cached_but_changed} ) @@ -1508,8 +1192,8 @@ class BlackTestCase(unittest.TestCase): fobj.write('print("hello")\n') self.invokeBlack([str(workspace)], exit_code=123) cache = black.read_cache(mode) - self.assertNotIn(failing, cache) - self.assertIn(clean, cache) + self.assertNotIn(str(failing), cache) + self.assertIn(str(clean), cache) def test_write_cache_write_fail(self) -> None: mode = DEFAULT_MODE @@ -1562,19 +1246,11 @@ class BlackTestCase(unittest.TestCase): path.touch() black.write_cache({}, [path], mode) one = black.read_cache(mode) - self.assertIn(path, one) + self.assertIn(str(path), one) two = black.read_cache(short_mode) - self.assertNotIn(path, two) - - def test_tricky_unicode_symbols(self) -> None: - source, expected = read_data("tricky_unicode_symbols") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) + self.assertNotIn(str(path), two) def test_single_file_force_pyi(self) -> None: - reg_mode = DEFAULT_MODE pyi_mode = replace(DEFAULT_MODE, is_pyi=True) contents, expected = read_data("force_pyi") with cache_dir() as workspace: @@ -1586,10 +1262,12 @@ class BlackTestCase(unittest.TestCase): actual = fh.read() # verify cache with --pyi is separate pyi_cache = black.read_cache(pyi_mode) - self.assertIn(path, pyi_cache) - normal_cache = black.read_cache(reg_mode) - self.assertNotIn(path, normal_cache) - self.assertEqual(actual, expected) + self.assertIn(str(path), pyi_cache) + normal_cache = black.read_cache(DEFAULT_MODE) + self.assertNotIn(str(path), normal_cache) + self.assertFormatEqual(expected, actual) + black.assert_equivalent(contents, actual) + black.assert_stable(contents, actual, pyi_mode) @event_loop() def test_multi_file_force_pyi(self) -> None: @@ -1613,8 +1291,8 @@ class BlackTestCase(unittest.TestCase): pyi_cache = black.read_cache(pyi_mode) normal_cache = black.read_cache(reg_mode) for path in paths: - self.assertIn(path, pyi_cache) - self.assertNotIn(path, normal_cache) + self.assertIn(str(path), pyi_cache) + self.assertNotIn(str(path), normal_cache) def test_pipe_force_pyi(self) -> None: source, expected = read_data("force_pyi") @@ -1627,7 +1305,7 @@ class BlackTestCase(unittest.TestCase): def test_single_file_force_py36(self) -> None: reg_mode = DEFAULT_MODE - py36_mode = replace(DEFAULT_MODE, target_versions=black.PY36_VERSIONS) + py36_mode = replace(DEFAULT_MODE, target_versions=PY36_VERSIONS) source, expected = read_data("force_py36") with cache_dir() as workspace: path = (workspace / "file.py").resolve() @@ -1638,15 +1316,15 @@ class BlackTestCase(unittest.TestCase): actual = fh.read() # verify cache with --target-version is separate py36_cache = black.read_cache(py36_mode) - self.assertIn(path, py36_cache) + self.assertIn(str(path), py36_cache) normal_cache = black.read_cache(reg_mode) - self.assertNotIn(path, normal_cache) + self.assertNotIn(str(path), normal_cache) self.assertEqual(actual, expected) @event_loop() def test_multi_file_force_py36(self) -> None: reg_mode = DEFAULT_MODE - py36_mode = replace(DEFAULT_MODE, target_versions=black.PY36_VERSIONS) + py36_mode = replace(DEFAULT_MODE, target_versions=PY36_VERSIONS) source, expected = read_data("force_py36") with cache_dir() as workspace: paths = [ @@ -1665,15 +1343,8 @@ class BlackTestCase(unittest.TestCase): 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_collections(self) -> None: - source, expected = read_data("collections") - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, DEFAULT_MODE) + self.assertIn(str(path), pyi_cache) + self.assertNotIn(str(path), normal_cache) def test_pipe_force_py36(self) -> None: source, expected = read_data("force_py36") @@ -1700,7 +1371,40 @@ class BlackTestCase(unittest.TestCase): this_abs = THIS_DIR.resolve() sources.extend( black.gen_python_files( - path.iterdir(), this_abs, include, exclude, None, report, gitignore + path.iterdir(), + this_abs, + include, + exclude, + None, + None, + report, + gitignore, + ) + ) + self.assertEqual(sorted(expected), sorted(sources)) + + def test_gitignore_used_as_default(self) -> None: + path = Path(THIS_DIR / "data" / "include_exclude_tests") + include = re.compile(r"\.pyi?$") + extend_exclude = re.compile(r"/exclude/") + src = str(path / "b/") + report = black.Report() + expected: List[Path] = [ + path / "b/.definitely_exclude/a.py", + path / "b/.definitely_exclude/a.pyi", + ] + sources = list( + black.get_sources( + ctx=FakeContext(), + src=(src,), + quiet=True, + verbose=False, + include=include, + exclude=None, + extend_exclude=extend_exclude, + force_exclude=None, + report=report, + stdin_filename=None, ) ) self.assertEqual(sorted(expected), sorted(sources)) @@ -1722,14 +1426,246 @@ class BlackTestCase(unittest.TestCase): src=(src,), quiet=True, verbose=False, - include=include, - exclude=exclude, + include=re.compile(include), + exclude=re.compile(exclude), + extend_exclude=None, + force_exclude=None, + report=report, + stdin_filename=None, + ) + ) + self.assertEqual(sorted(expected), sorted(sources)) + + @patch("black.find_project_root", lambda *args: THIS_DIR.resolve()) + def test_get_sources_with_stdin(self) -> None: + include = "" + exclude = r"/exclude/|a\.py" + src = "-" + report = black.Report() + expected = [Path("-")] + sources = list( + black.get_sources( + ctx=FakeContext(), + src=(src,), + quiet=True, + verbose=False, + include=re.compile(include), + exclude=re.compile(exclude), + extend_exclude=None, + force_exclude=None, + report=report, + stdin_filename=None, + ) + ) + self.assertEqual(sorted(expected), sorted(sources)) + + @patch("black.find_project_root", lambda *args: THIS_DIR.resolve()) + def test_get_sources_with_stdin_filename(self) -> None: + include = "" + exclude = r"/exclude/|a\.py" + src = "-" + report = black.Report() + stdin_filename = str(THIS_DIR / "data/collections.py") + expected = [Path(f"__BLACK_STDIN_FILENAME__{stdin_filename}")] + sources = list( + black.get_sources( + ctx=FakeContext(), + src=(src,), + quiet=True, + verbose=False, + include=re.compile(include), + exclude=re.compile(exclude), + extend_exclude=None, + force_exclude=None, + report=report, + stdin_filename=stdin_filename, + ) + ) + self.assertEqual(sorted(expected), sorted(sources)) + + @patch("black.find_project_root", lambda *args: THIS_DIR.resolve()) + def test_get_sources_with_stdin_filename_and_exclude(self) -> None: + # Exclude shouldn't exclude stdin_filename since it is mimicking the + # file being passed directly. This is the same as + # test_exclude_for_issue_1572 + path = THIS_DIR / "data" / "include_exclude_tests" + include = "" + exclude = r"/exclude/|a\.py" + src = "-" + report = black.Report() + stdin_filename = str(path / "b/exclude/a.py") + expected = [Path(f"__BLACK_STDIN_FILENAME__{stdin_filename}")] + sources = list( + black.get_sources( + ctx=FakeContext(), + src=(src,), + quiet=True, + verbose=False, + include=re.compile(include), + exclude=re.compile(exclude), + extend_exclude=None, + force_exclude=None, + report=report, + stdin_filename=stdin_filename, + ) + ) + self.assertEqual(sorted(expected), sorted(sources)) + + @patch("black.find_project_root", lambda *args: THIS_DIR.resolve()) + def test_get_sources_with_stdin_filename_and_extend_exclude(self) -> None: + # Extend exclude shouldn't exclude stdin_filename since it is mimicking the + # file being passed directly. This is the same as + # test_exclude_for_issue_1572 + path = THIS_DIR / "data" / "include_exclude_tests" + include = "" + extend_exclude = r"/exclude/|a\.py" + src = "-" + report = black.Report() + stdin_filename = str(path / "b/exclude/a.py") + expected = [Path(f"__BLACK_STDIN_FILENAME__{stdin_filename}")] + sources = list( + black.get_sources( + ctx=FakeContext(), + src=(src,), + quiet=True, + verbose=False, + include=re.compile(include), + exclude=re.compile(""), + extend_exclude=re.compile(extend_exclude), force_exclude=None, report=report, + stdin_filename=stdin_filename, ) ) self.assertEqual(sorted(expected), sorted(sources)) + @patch("black.find_project_root", lambda *args: THIS_DIR.resolve()) + def test_get_sources_with_stdin_filename_and_force_exclude(self) -> None: + # Force exclude should exclude the file when passing it through + # stdin_filename + path = THIS_DIR / "data" / "include_exclude_tests" + include = "" + force_exclude = r"/exclude/|a\.py" + src = "-" + report = black.Report() + stdin_filename = str(path / "b/exclude/a.py") + sources = list( + black.get_sources( + ctx=FakeContext(), + src=(src,), + quiet=True, + verbose=False, + include=re.compile(include), + exclude=re.compile(""), + extend_exclude=None, + force_exclude=re.compile(force_exclude), + report=report, + stdin_filename=stdin_filename, + ) + ) + self.assertEqual([], sorted(sources)) + + def test_reformat_one_with_stdin(self) -> None: + with patch( + "black.format_stdin_to_stdout", + return_value=lambda *args, **kwargs: black.Changed.YES, + ) as fsts: + report = MagicMock() + path = Path("-") + black.reformat_one( + path, + fast=True, + write_back=black.WriteBack.YES, + mode=DEFAULT_MODE, + report=report, + ) + fsts.assert_called_once() + report.done.assert_called_with(path, black.Changed.YES) + + def test_reformat_one_with_stdin_filename(self) -> None: + with patch( + "black.format_stdin_to_stdout", + return_value=lambda *args, **kwargs: black.Changed.YES, + ) as fsts: + report = MagicMock() + p = "foo.py" + path = Path(f"__BLACK_STDIN_FILENAME__{p}") + expected = Path(p) + black.reformat_one( + path, + fast=True, + write_back=black.WriteBack.YES, + mode=DEFAULT_MODE, + report=report, + ) + fsts.assert_called_once_with( + fast=True, write_back=black.WriteBack.YES, mode=DEFAULT_MODE + ) + # __BLACK_STDIN_FILENAME__ should have been stripped + report.done.assert_called_with(expected, black.Changed.YES) + + def test_reformat_one_with_stdin_filename_pyi(self) -> None: + with patch( + "black.format_stdin_to_stdout", + return_value=lambda *args, **kwargs: black.Changed.YES, + ) as fsts: + report = MagicMock() + p = "foo.pyi" + path = Path(f"__BLACK_STDIN_FILENAME__{p}") + expected = Path(p) + black.reformat_one( + path, + fast=True, + write_back=black.WriteBack.YES, + mode=DEFAULT_MODE, + report=report, + ) + fsts.assert_called_once_with( + fast=True, + write_back=black.WriteBack.YES, + mode=replace(DEFAULT_MODE, is_pyi=True), + ) + # __BLACK_STDIN_FILENAME__ should have been stripped + report.done.assert_called_with(expected, black.Changed.YES) + + def test_reformat_one_with_stdin_and_existing_path(self) -> None: + with patch( + "black.format_stdin_to_stdout", + return_value=lambda *args, **kwargs: black.Changed.YES, + ) as fsts: + report = MagicMock() + # Even with an existing file, since we are forcing stdin, black + # should output to stdout and not modify the file inplace + p = Path(str(THIS_DIR / "data/collections.py")) + # Make sure is_file actually returns True + self.assertTrue(p.is_file()) + path = Path(f"__BLACK_STDIN_FILENAME__{p}") + expected = Path(p) + black.reformat_one( + path, + fast=True, + write_back=black.WriteBack.YES, + mode=DEFAULT_MODE, + report=report, + ) + fsts.assert_called_once() + # __BLACK_STDIN_FILENAME__ should have been stripped + report.done.assert_called_with(expected, black.Changed.YES) + + def test_reformat_one_with_stdin_empty(self) -> None: + output = io.StringIO() + with patch("io.TextIOWrapper", lambda *args, **kwargs: output): + try: + black.format_stdin_to_stdout( + fast=True, + content="", + write_back=black.WriteBack.YES, + mode=DEFAULT_MODE, + ) + except io.UnsupportedOperation: + pass # StringIO does not support detach + assert output.getvalue() == "" + def test_gitignore_exclude(self) -> None: path = THIS_DIR / "data" / "include_exclude_tests" include = re.compile(r"\.pyi?$") @@ -1746,7 +1682,41 @@ class BlackTestCase(unittest.TestCase): this_abs = THIS_DIR.resolve() sources.extend( black.gen_python_files( - path.iterdir(), this_abs, include, exclude, None, report, gitignore + path.iterdir(), + this_abs, + include, + exclude, + None, + None, + report, + gitignore, + ) + ) + self.assertEqual(sorted(expected), sorted(sources)) + + def test_nested_gitignore(self) -> None: + path = Path(THIS_DIR / "data" / "nested_gitignore_tests") + include = re.compile(r"\.pyi?$") + exclude = re.compile(r"") + root_gitignore = black.files.get_gitignore(path) + report = black.Report() + expected: List[Path] = [ + Path(path / "x.py"), + Path(path / "root/b.py"), + Path(path / "root/c.py"), + Path(path / "root/child/c.py"), + ] + this_abs = THIS_DIR.resolve() + sources = list( + black.gen_python_files( + path.iterdir(), + this_abs, + include, + exclude, + None, + None, + report, + root_gitignore, ) ) self.assertEqual(sorted(expected), sorted(sources)) @@ -1767,6 +1737,8 @@ class BlackTestCase(unittest.TestCase): Path(path / "b/.definitely_exclude/a.pie"), Path(path / "b/.definitely_exclude/a.py"), Path(path / "b/.definitely_exclude/a.pyi"), + Path(path / ".gitignore"), + Path(path / "pyproject.toml"), ] this_abs = THIS_DIR.resolve() sources.extend( @@ -1776,25 +1748,21 @@ class BlackTestCase(unittest.TestCase): empty, re.compile(black.DEFAULT_EXCLUDES), None, + None, report, gitignore, ) ) self.assertEqual(sorted(expected), sorted(sources)) - def test_empty_exclude(self) -> None: + def test_extend_exclude(self) -> None: path = THIS_DIR / "data" / "include_exclude_tests" report = black.Report() gitignore = PathSpec.from_lines("gitwildmatch", []) - empty = re.compile(r"") sources: List[Path] = [] expected = [ - Path(path / "b/dont_exclude/a.py"), - Path(path / "b/dont_exclude/a.pyi"), Path(path / "b/exclude/a.py"), - Path(path / "b/exclude/a.pyi"), - Path(path / "b/.definitely_exclude/a.py"), - Path(path / "b/.definitely_exclude/a.pyi"), + Path(path / "b/dont_exclude/a.py"), ] this_abs = THIS_DIR.resolve() sources.extend( @@ -1802,7 +1770,8 @@ class BlackTestCase(unittest.TestCase): path.iterdir(), this_abs, re.compile(black.DEFAULT_INCLUDES), - empty, + re.compile(r"\.pyi$"), + re.compile(r"\.definitely_exclude"), None, report, gitignore, @@ -1810,10 +1779,20 @@ class BlackTestCase(unittest.TestCase): ) self.assertEqual(sorted(expected), sorted(sources)) - def test_invalid_include_exclude(self) -> None: - for option in ["--include", "--exclude"]: + def test_invalid_cli_regex(self) -> None: + for option in ["--include", "--exclude", "--extend-exclude", "--force-exclude"]: self.invokeBlack(["-", option, "**()(!!*)"], exit_code=2) + def test_required_version_matches_version(self) -> None: + self.invokeBlack( + ["--required-version", black.__version__], exit_code=0, ignore_config=True + ) + + def test_required_version_does_not_match_version(self) -> None: + self.invokeBlack( + ["--required-version", "20.99b"], exit_code=1, ignore_config=True + ) + def test_preserves_line_endings(self) -> None: with TemporaryDirectory() as workspace: test_file = Path(workspace) / "test.py" @@ -1834,7 +1813,7 @@ class BlackTestCase(unittest.TestCase): black.main, ["-", "--fast"], input=BytesIO(contents.encode("utf8")) ) self.assertEqual(result.exit_code, 0) - output = runner.stdout_bytes + output = result.stdout_bytes self.assertIn(nl.encode("utf8"), output) if nl == "\n": self.assertNotIn(b"\r\n", output) @@ -1860,7 +1839,14 @@ class BlackTestCase(unittest.TestCase): try: list( black.gen_python_files( - path.iterdir(), root, include, exclude, None, report, gitignore + path.iterdir(), + root, + include, + exclude, + None, + None, + report, + gitignore, ) ) except ValueError as ve: @@ -1874,7 +1860,14 @@ class BlackTestCase(unittest.TestCase): with self.assertRaises(ValueError): list( black.gen_python_files( - path.iterdir(), root, include, exclude, None, report, gitignore + path.iterdir(), + root, + include, + exclude, + None, + None, + report, + gitignore, ) ) path.iterdir.assert_called() @@ -1886,7 +1879,7 @@ class BlackTestCase(unittest.TestCase): def test_shhh_click(self) -> None: try: - from click import _unicodefun # type: ignore + from click import _unicodefun except ModuleNotFoundError: self.skipTest("Incompatible Click version") if not hasattr(_unicodefun, "_verify_python3_env"): @@ -1895,14 +1888,14 @@ class BlackTestCase(unittest.TestCase): with patch("locale.getpreferredencoding") as gpe: gpe.return_value = "ASCII" with self.assertRaises(RuntimeError): - _unicodefun._verify_python3_env() + _unicodefun._verify_python3_env() # type: ignore # 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() + _unicodefun._verify_python3_env() # type: ignore except RuntimeError as re: self.fail(f"`patch_click()` failed, exception still raised: {re}") @@ -1919,15 +1912,7 @@ class BlackTestCase(unittest.TestCase): critical=fail, log=fail, ): - ff(THIS_FILE) - - @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") - def test_blackd_main(self) -> None: - with patch("blackd.web.run_app"): - result = CliRunner().invoke(blackd.main, []) - if result.exception is not None: - raise result.exception - self.assertEqual(result.exit_code, 0) + ff(THIS_DIR / "util.py") def test_invalid_config_return_code(self) -> None: tmp_file = Path(black.dump_to_file()) @@ -1987,190 +1972,231 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(black.find_project_root((src_dir,)), src_dir.resolve()) self.assertEqual(black.find_project_root((src_python,)), src_dir.resolve()) + @patch( + "black.files.find_user_pyproject_toml", + black.files.find_user_pyproject_toml.__wrapped__, + ) + def test_find_user_pyproject_toml_linux(self) -> None: + if system() == "Windows": + return + + # Test if XDG_CONFIG_HOME is checked + with TemporaryDirectory() as workspace: + tmp_user_config = Path(workspace) / "black" + with patch.dict("os.environ", {"XDG_CONFIG_HOME": workspace}): + self.assertEqual( + black.files.find_user_pyproject_toml(), tmp_user_config.resolve() + ) + + # Test fallback for XDG_CONFIG_HOME + with patch.dict("os.environ"): + os.environ.pop("XDG_CONFIG_HOME", None) + fallback_user_config = Path("~/.config").expanduser() / "black" + self.assertEqual( + black.files.find_user_pyproject_toml(), fallback_user_config.resolve() + ) + + def test_find_user_pyproject_toml_windows(self) -> None: + if system() != "Windows": + return + + user_config_path = Path.home() / ".black" + self.assertEqual( + black.files.find_user_pyproject_toml(), user_config_path.resolve() + ) + def test_bpo_33660_workaround(self) -> None: if system() == "Windows": return # https://bugs.python.org/issue33660 - - old_cwd = Path.cwd() - try: - root = Path("/") - os.chdir(str(root)) + root = Path("/") + with change_directory(root): path = Path("workspace") / "project" report = black.Report(verbose=True) normalized_path = black.normalize_path_maybe_ignore(path, root, report) self.assertEqual(normalized_path, "workspace/project") - finally: - os.chdir(str(old_cwd)) - - -class BlackDTestCase(AioHTTPTestCase): - async def get_application(self) -> web.Application: - return blackd.make_app() - - # TODO: remove these decorators once the below is released - # https://github.com/aio-libs/aiohttp/pull/3727 - @skip_if_exception("ClientOSError") - @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") - @unittest_run_loop - async def test_blackd_request_needs_formatting(self) -> None: - response = await self.client.post("/", data=b"print('hello world')") - self.assertEqual(response.status, 200) - self.assertEqual(response.charset, "utf8") - self.assertEqual(await response.read(), b'print("hello world")\n') - - @skip_if_exception("ClientOSError") - @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") - @unittest_run_loop - async def test_blackd_request_no_change(self) -> None: - response = await self.client.post("/", data=b'print("hello world")\n') - self.assertEqual(response.status, 204) - self.assertEqual(await response.read(), b"") - - @skip_if_exception("ClientOSError") - @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") - @unittest_run_loop - async def test_blackd_request_syntax_error(self) -> None: - response = await self.client.post("/", data=b"what even ( is") - self.assertEqual(response.status, 400) - content = await response.text() - self.assertTrue( - content.startswith("Cannot parse"), - msg=f"Expected error to start with 'Cannot parse', got {repr(content)}", - ) - @skip_if_exception("ClientOSError") - @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") - @unittest_run_loop - async def test_blackd_unsupported_version(self) -> None: - response = await self.client.post( - "/", data=b"what", headers={blackd.PROTOCOL_VERSION_HEADER: "2"} - ) - self.assertEqual(response.status, 501) - - @skip_if_exception("ClientOSError") - @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") - @unittest_run_loop - async def test_blackd_supported_version(self) -> None: - response = await self.client.post( - "/", data=b"what", headers={blackd.PROTOCOL_VERSION_HEADER: "1"} - ) - self.assertEqual(response.status, 200) - - @skip_if_exception("ClientOSError") - @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") - @unittest_run_loop - async def test_blackd_invalid_python_variant(self) -> None: - async def check(header_value: str, expected_status: int = 400) -> None: - response = await self.client.post( - "/", data=b"what", headers={blackd.PYTHON_VARIANT_HEADER: header_value} - ) - self.assertEqual(response.status, expected_status) - - await check("lol") - await check("ruby3.5") - await check("pyi3.6") - await check("py1.5") - await check("2.8") - await check("py2.8") - await check("3.0") - await check("pypy3.0") - await check("jython3.4") - - @skip_if_exception("ClientOSError") - @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") - @unittest_run_loop - async def test_blackd_pyi(self) -> None: - source, expected = read_data("stub.pyi") - response = await self.client.post( - "/", data=source, headers={blackd.PYTHON_VARIANT_HEADER: "pyi"} - ) - self.assertEqual(response.status, 200) - self.assertEqual(await response.text(), expected) + def test_newline_comment_interaction(self) -> None: + source = "class A:\\\r\n# type: ignore\n pass\n" + output = black.format_str(source, mode=DEFAULT_MODE) + black.assert_stable(source, output, mode=DEFAULT_MODE) - @skip_if_exception("ClientOSError") - @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") - @unittest_run_loop - async def test_blackd_diff(self) -> None: - diff_header = re.compile( - r"(In|Out)\t\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d\.\d\d\d\d\d\d \+\d\d\d\d" - ) + def test_bpo_2142_workaround(self) -> None: - source, _ = read_data("blackd_diff.py") - expected, _ = read_data("blackd_diff.diff") + # https://bugs.python.org/issue2142 - response = await self.client.post( - "/", data=source, headers={blackd.DIFF_HEADER: "true"} + source, _ = read_data("missing_final_newline.py") + # read_data adds a trailing newline + source = source.rstrip() + expected, _ = read_data("missing_final_newline.diff") + tmp_file = Path(black.dump_to_file(source, ensure_final_newline=False)) + diff_header = re.compile( + rf"{re.escape(str(tmp_file))}\t\d\d\d\d-\d\d-\d\d " + r"\d\d:\d\d:\d\d\.\d\d\d\d\d\d \+\d\d\d\d" ) - self.assertEqual(response.status, 200) - - actual = await response.text() + try: + result = BlackRunner().invoke(black.main, ["--diff", str(tmp_file)]) + self.assertEqual(result.exit_code, 0) + finally: + os.unlink(tmp_file) + actual = result.output actual = diff_header.sub(DETERMINISTIC_HEADER, actual) self.assertEqual(actual, expected) - @skip_if_exception("ClientOSError") - @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") - @unittest_run_loop - async def test_blackd_python_variant(self) -> None: - code = ( - "def f(\n" - " and_has_a_bunch_of,\n" - " very_long_arguments_too,\n" - " and_lots_of_them_as_well_lol,\n" - " **and_very_long_keyword_arguments\n" - "):\n" - " pass\n" + @pytest.mark.python2 + def test_docstring_reformat_for_py27(self) -> None: + """ + Check that stripping trailing whitespace from Python 2 docstrings + doesn't trigger a "not equivalent to source" error + """ + source = ( + b'def foo():\r\n """Testing\r\n Testing """\r\n print "Foo"\r\n' ) + expected = 'def foo():\n """Testing\n Testing"""\n print "Foo"\n' - async def check(header_value: str, expected_status: int) -> None: - response = await self.client.post( - "/", data=code, headers={blackd.PYTHON_VARIANT_HEADER: header_value} - ) - self.assertEqual( - response.status, expected_status, msg=await response.text() - ) - - await check("3.6", 200) - await check("py3.6", 200) - await check("3.6,3.7", 200) - await check("3.6,py3.7", 200) - await check("py36,py37", 200) - await check("36", 200) - await check("3.6.4", 200) - - await check("2", 204) - await check("2.7", 204) - await check("py2.7", 204) - await check("3.4", 204) - await check("py3.4", 204) - await check("py34,py36", 204) - await check("34", 204) - - @skip_if_exception("ClientOSError") - @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") - @unittest_run_loop - async def test_blackd_line_length(self) -> None: - response = await self.client.post( - "/", data=b'print("hello")\n', headers={blackd.LINE_LENGTH_HEADER: "7"} - ) - self.assertEqual(response.status, 200) - - @skip_if_exception("ClientOSError") - @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") - @unittest_run_loop - async def test_blackd_invalid_line_length(self) -> None: - response = await self.client.post( - "/", data=b'print("hello")\n', headers={blackd.LINE_LENGTH_HEADER: "NaN"} + result = CliRunner().invoke( + black.main, + ["-", "-q", "--target-version=py27"], + input=BytesIO(source), ) - self.assertEqual(response.status, 400) - - @skip_if_exception("ClientOSError") - @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") - @unittest_run_loop - async def test_blackd_response_black_version_header(self) -> None: - response = await self.client.post("/") - self.assertIsNotNone(response.headers.get(blackd.BLACK_VERSION_HEADER)) + + self.assertEqual(result.exit_code, 0) + actual = result.output + self.assertFormatEqual(actual, expected) + + @staticmethod + def compare_results( + result: click.testing.Result, expected_value: str, expected_exit_code: int + ) -> None: + """Helper method to test the value and exit code of a click Result.""" + assert ( + result.output == expected_value + ), "The output did not match the expected value." + assert result.exit_code == expected_exit_code, "The exit code is incorrect." + + def test_code_option(self) -> None: + """Test the code option with no changes.""" + code = 'print("Hello world")\n' + args = ["--code", code] + result = CliRunner().invoke(black.main, args) + + self.compare_results(result, code, 0) + + def test_code_option_changed(self) -> None: + """Test the code option when changes are required.""" + code = "print('hello world')" + formatted = black.format_str(code, mode=DEFAULT_MODE) + + args = ["--code", code] + result = CliRunner().invoke(black.main, args) + + self.compare_results(result, formatted, 0) + + def test_code_option_check(self) -> None: + """Test the code option when check is passed.""" + args = ["--check", "--code", 'print("Hello world")\n'] + result = CliRunner().invoke(black.main, args) + self.compare_results(result, "", 0) + + def test_code_option_check_changed(self) -> None: + """Test the code option when changes are required, and check is passed.""" + args = ["--check", "--code", "print('hello world')"] + result = CliRunner().invoke(black.main, args) + self.compare_results(result, "", 1) + + def test_code_option_diff(self) -> None: + """Test the code option when diff is passed.""" + code = "print('hello world')" + formatted = black.format_str(code, mode=DEFAULT_MODE) + result_diff = diff(code, formatted, "STDIN", "STDOUT") + + args = ["--diff", "--code", code] + result = CliRunner().invoke(black.main, args) + + # Remove time from diff + output = DIFF_TIME.sub("", result.output) + + assert output == result_diff, "The output did not match the expected value." + assert result.exit_code == 0, "The exit code is incorrect." + + def test_code_option_color_diff(self) -> None: + """Test the code option when color and diff are passed.""" + code = "print('hello world')" + formatted = black.format_str(code, mode=DEFAULT_MODE) + + result_diff = diff(code, formatted, "STDIN", "STDOUT") + result_diff = color_diff(result_diff) + + args = ["--diff", "--color", "--code", code] + result = CliRunner().invoke(black.main, args) + + # Remove time from diff + output = DIFF_TIME.sub("", result.output) + + assert output == result_diff, "The output did not match the expected value." + assert result.exit_code == 0, "The exit code is incorrect." + + def test_code_option_safe(self) -> None: + """Test that the code option throws an error when the sanity checks fail.""" + # Patch black.assert_equivalent to ensure the sanity checks fail + with patch.object(black, "assert_equivalent", side_effect=AssertionError): + code = 'print("Hello world")' + error_msg = f"{code}\nerror: cannot format : \n" + + args = ["--safe", "--code", code] + result = CliRunner().invoke(black.main, args) + + self.compare_results(result, error_msg, 123) + + def test_code_option_fast(self) -> None: + """Test that the code option ignores errors when the sanity checks fail.""" + # Patch black.assert_equivalent to ensure the sanity checks fail + with patch.object(black, "assert_equivalent", side_effect=AssertionError): + code = 'print("Hello world")' + formatted = black.format_str(code, mode=DEFAULT_MODE) + + args = ["--fast", "--code", code] + result = CliRunner().invoke(black.main, args) + + self.compare_results(result, formatted, 0) + + def test_code_option_config(self) -> None: + """ + Test that the code option finds the pyproject.toml in the current directory. + """ + with patch.object(black, "parse_pyproject_toml", return_value={}) as parse: + args = ["--code", "print"] + CliRunner().invoke(black.main, args) + + pyproject_path = Path(Path().cwd(), "pyproject.toml").resolve() + assert ( + len(parse.mock_calls) >= 1 + ), "Expected config parse to be called with the current directory." + + _, call_args, _ = parse.mock_calls[0] + assert ( + call_args[0].lower() == str(pyproject_path).lower() + ), "Incorrect config loaded." + + def test_code_option_parent_config(self) -> None: + """ + Test that the code option finds the pyproject.toml in the parent directory. + """ + with patch.object(black, "parse_pyproject_toml", return_value={}) as parse: + with change_directory(Path("tests")): + args = ["--code", "print"] + CliRunner().invoke(black.main, args) + + pyproject_path = Path(Path().cwd().parent, "pyproject.toml").resolve() + assert ( + len(parse.mock_calls) >= 1 + ), "Expected config parse to be called with the current directory." + + _, call_args, _ = parse.mock_calls[0] + assert ( + call_args[0].lower() == str(pyproject_path).lower() + ), "Incorrect config loaded." with open(black.__file__, "r", encoding="utf-8") as _bf: