X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/4809e365d43ff5f837f9dacbc1f3d04975fe35e8..17908718338e6ba10d01f3b484ed0fe9542b8169:/tests/test_black.py?ds=sidebyside diff --git a/tests/test_black.py b/tests/test_black.py index 1d759f2..bc80c8f 100644 --- a/tests/test_black.py +++ b/tests/test_black.py @@ -1,19 +1,24 @@ #!/usr/bin/env python3 import asyncio +import logging from concurrent.futures import ThreadPoolExecutor -from contextlib import contextmanager, redirect_stderr -from functools import partial, wraps +from contextlib import contextmanager +from dataclasses import replace +from functools import partial +import inspect from io import BytesIO, TextIOWrapper import os from pathlib import Path -import re +from platform import system +import regex as re import sys from tempfile import TemporaryDirectory +import types from typing import ( Any, BinaryIO, Callable, - Coroutine, + Dict, Generator, List, Tuple, @@ -23,26 +28,39 @@ from typing import ( import unittest from unittest.mock import patch, MagicMock +import click from click import unstyle from click.testing import CliRunner import black +from black import Feature, TargetVersion try: import blackd - from aiohttp.test_utils import TestClient, TestServer + 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 pathspec import PathSpec -ll = 88 -ff = partial(black.format_file_in_place, line_length=ll, fast=True) -fs = partial(black.format_str, line_length=ll) +# Import other test classes +from .test_primer import PrimerCLITests # noqa: F401 + + +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 +] T = TypeVar("T") R = TypeVar("R") @@ -57,7 +75,7 @@ def read_data(name: str, data: bool = True) -> Tuple[str, str]: name += ".py" _input: List[str] = [] _output: List[str] = [] - base_dir = THIS_DIR / "data" if data else THIS_DIR + 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 @@ -85,27 +103,40 @@ def cache_dir(exists: bool = True) -> Iterator[Path]: @contextmanager -def event_loop(close: bool) -> Iterator[None]: +def event_loop() -> Iterator[None]: policy = asyncio.get_event_loop_policy() - old_loop = policy.get_event_loop() loop = policy.new_event_loop() asyncio.set_event_loop(loop) try: yield finally: - policy.set_event_loop(old_loop) - if close: - loop.close() + 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.""" + + def __init__(self) -> None: + self.default_map: Dict[str, Any] = {} -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)) +class FakeParameter(click.Parameter): + """A fake click Parameter for when calling functions that need it.""" - return wrapper + def __init__(self) -> None: + pass class BlackRunner(CliRunner): @@ -135,6 +166,7 @@ class BlackRunner(CliRunner): 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"): @@ -153,7 +185,35 @@ class BlackTestCase(unittest.TestCase): list(bdv.visit(exp_node)) except Exception as ve: black.err(str(ve)) - self.assertEqual(expected, actual) + self.assertMultiLineEqual(expected, actual) + + def invokeBlack( + self, args: List[str], exit_code: int = 0, ignore_config: bool = True + ) -> None: + runner = BlackRunner() + if ignore_config: + args = ["--verbose", "--config", str(THIS_DIR / "empty.toml"), *args] + result = runner.invoke(black.main, args) + 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"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: @@ -161,7 +221,7 @@ 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, DEFAULT_MODE) def test_empty_ff(self) -> None: expected = "" @@ -174,61 +234,101 @@ class BlackTestCase(unittest.TestCase): os.unlink(tmp_file) self.assertFormatEqual(expected, actual) - @patch("black.dump_to_file", dump_to_stderr) def test_self(self) -> None: - source, expected = read_data("test_black", data=False) - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, line_length=ll) - self.assertFalse(ff(THIS_FILE)) + self.checkSourceFile("tests/test_black.py") - @patch("black.dump_to_file", dump_to_stderr) def test_black(self) -> None: - 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) - self.assertFalse(ff(THIS_DIR / ".." / "black.py")) + 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("../black", data=False) + source, expected = read_data("src/black/__init__", data=False) result = BlackRunner().invoke( black.main, - ["-", "--fast", f"--line-length={ll}"], + ["-", "--fast", f"--line-length={black.DEFAULT_LINE_LENGTH}"], input=BytesIO(source.encode("utf8")), ) self.assertEqual(result.exit_code, 0) self.assertFormatEqual(expected, result.output) black.assert_equivalent(source, result.output) - black.assert_stable(source, result.output, line_length=ll) + black.assert_stable(source, result.output, DEFAULT_MODE) def test_piping_diff(self) -> None: diff_header = re.compile( - rf"(STDIN|STDOUT)\t\d\d\d\d-\d\d-\d\d " - rf"\d\d:\d\d:\d\d\.\d\d\d\d\d\d \+\d\d\d\d" + r"(STDIN|STDOUT)\t\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d\.\d\d\d\d\d\d " + r"\+\d\d\d\d" ) source, _ = read_data("expression.py") expected, _ = read_data("expression.diff") config = THIS_DIR / "data" / "empty_pyproject.toml" - args = ["-", "--fast", f"--line-length={ll}", "--diff", f"--config={config}"] + args = [ + "-", + "--fast", + f"--line-length={black.DEFAULT_LINE_LENGTH}", + "--diff", + f"--config={config}", + ] result = BlackRunner().invoke( black.main, args, input=BytesIO(source.encode("utf8")) ) self.assertEqual(result.exit_code, 0) - actual = diff_header.sub("[Deterministic header]", result.output) + actual = diff_header.sub(DETERMINISTIC_HEADER, result.output) actual = actual.rstrip() + "\n" # the diff output has a trailing space self.assertEqual(expected, actual) - @patch("black.dump_to_file", dump_to_stderr) - def test_setup(self) -> None: - source, expected = read_data("../setup", data=False) - actual = fs(source) - self.assertFormatEqual(expected, actual) - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, line_length=ll) - self.assertFalse(ff(THIS_DIR / ".." / "setup.py")) + def test_piping_diff_with_color(self) -> None: + source, _ = read_data("expression.py") + config = THIS_DIR / "data" / "empty_pyproject.toml" + args = [ + "-", + "--fast", + f"--line-length={black.DEFAULT_LINE_LENGTH}", + "--diff", + "--color", + f"--config={config}", + ] + result = BlackRunner().invoke( + black.main, args, input=BytesIO(source.encode("utf8")) + ) + actual = result.output + # Again, the contents are checked in a different test, so only look for colors. + self.assertIn("\033[1;37m", actual) + self.assertIn("\033[36m", actual) + self.assertIn("\033[32m", actual) + self.assertIn("\033[31m", actual) + self.assertIn("\033[0m", actual) @patch("black.dump_to_file", dump_to_stderr) def test_function(self) -> None: @@ -236,7 +336,7 @@ 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, DEFAULT_MODE) @patch("black.dump_to_file", dump_to_stderr) def test_function2(self) -> None: @@ -244,7 +344,51 @@ 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, DEFAULT_MODE) + + @patch("black.dump_to_file", dump_to_stderr) + def _test_wip(self) -> None: + source, expected = read_data("wip") + sys.settrace(tracefunc) + mode = replace( + DEFAULT_MODE, + experimental_string_processing=False, + target_versions={black.TargetVersion.PY38}, + ) + actual = fs(source, mode=mode) + sys.settrace(None) + 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_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: + source, _expected = read_data("trailing_comma_optional_parens1") + actual = fs(source) + black.assert_stable(source, actual, DEFAULT_MODE) + + @unittest.expectedFailure + @patch("black.dump_to_file", dump_to_stderr) + def test_trailing_comma_optional_parens_stability2(self) -> None: + source, _expected = read_data("trailing_comma_optional_parens2") + actual = fs(source) + black.assert_stable(source, actual, DEFAULT_MODE) + + @unittest.expectedFailure + @patch("black.dump_to_file", dump_to_stderr) + def test_trailing_comma_optional_parens_stability3(self) -> None: + source, _expected = read_data("trailing_comma_optional_parens3") + actual = fs(source) + black.assert_stable(source, actual, DEFAULT_MODE) @patch("black.dump_to_file", dump_to_stderr) def test_expression(self) -> None: @@ -252,7 +396,24 @@ 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, DEFAULT_MODE) + + @patch("black.dump_to_file", dump_to_stderr) + def test_pep_572(self) -> None: + source, expected = read_data("pep_572") + actual = fs(source) + self.assertFormatEqual(expected, actual) + black.assert_stable(source, actual, DEFAULT_MODE) + if sys.version_info >= (3, 8): + black.assert_equivalent(source, actual) + + def test_pep_572_version_detection(self) -> None: + source, _ = read_data("pep_572") + root = black.lib2to3_parse(source) + features = black.get_features_used(root) + self.assertIn(black.Feature.ASSIGNMENT_EXPRESSIONS, features) + versions = black.detect_target_versions(root) + self.assertIn(black.TargetVersion.PY38, versions) def test_expression_ff(self) -> None: source, expected = read_data("expression") @@ -266,7 +427,7 @@ 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, DEFAULT_MODE) def test_expression_diff(self) -> None: source, _ = read_data("expression.py") @@ -274,7 +435,7 @@ class BlackTestCase(unittest.TestCase): 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 " - rf"\d\d:\d\d:\d\d\.\d\d\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, ["--diff", str(tmp_file)]) @@ -282,24 +443,60 @@ class BlackTestCase(unittest.TestCase): finally: os.unlink(tmp_file) actual = result.output - actual = diff_header.sub("[Deterministic header]", actual) + actual = diff_header.sub(DETERMINISTIC_HEADER, actual) actual = actual.rstrip() + "\n" # the diff output has a trailing space if expected != actual: dump = black.dump_to_file(actual) msg = ( - f"Expected diff isn't equal to the actual. If you made changes " - f"to expression.py and this is an anticipated difference, " - f"overwrite tests/expression.diff with {dump}" + "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.diff with {dump}" ) self.assertEqual(expected, actual, msg) + def test_expression_diff_with_color(self) -> None: + source, _ = read_data("expression.py") + expected, _ = read_data("expression.diff") + tmp_file = Path(black.dump_to_file(source)) + try: + result = BlackRunner().invoke( + black.main, ["--diff", "--color", str(tmp_file)] + ) + finally: + os.unlink(tmp_file) + actual = result.output + # We check the contents of the diff in `test_expression_diff`. All + # we need to check here is that color codes exist in the result. + self.assertIn("\033[1;37m", actual) + self.assertIn("\033[36m", actual) + self.assertIn("\033[32m", actual) + 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, line_length=ll) + 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") + 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) + + def test_detect_pos_only_arguments(self) -> None: + source, _ = read_data("pep_570") + root = black.lib2to3_parse(source) + features = black.get_features_used(root) + self.assertIn(black.Feature.POS_ONLY_ARGUMENTS, features) + versions = black.detect_target_versions(root) + self.assertIn(black.TargetVersion.PY38, versions) @patch("black.dump_to_file", dump_to_stderr) def test_string_quotes(self) -> None: @@ -307,12 +504,64 @@ 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, DEFAULT_MODE) + mode = replace(DEFAULT_MODE, string_normalization=False) not_normalized = fs(source, mode=mode) - self.assertFormatEqual(source, not_normalized) + self.assertFormatEqual(source.replace("\\\n", ""), 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_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.""" + source, expected = read_data("docstring_no_string_normalization") + mode = replace(DEFAULT_MODE, string_normalization=False) + actual = fs(source, mode=mode) + self.assertFormatEqual(expected, actual) + 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") + mode = replace(DEFAULT_MODE, experimental_string_processing=False) + actual = fs(source, mode=mode) + 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: @@ -320,7 +569,15 @@ 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, 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: @@ -328,7 +585,7 @@ 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, DEFAULT_MODE) @patch("black.dump_to_file", dump_to_stderr) def test_comments2(self) -> None: @@ -336,7 +593,7 @@ 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, DEFAULT_MODE) @patch("black.dump_to_file", dump_to_stderr) def test_comments3(self) -> None: @@ -344,7 +601,7 @@ 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, DEFAULT_MODE) @patch("black.dump_to_file", dump_to_stderr) def test_comments4(self) -> None: @@ -352,7 +609,7 @@ 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, DEFAULT_MODE) @patch("black.dump_to_file", dump_to_stderr) def test_comments5(self) -> None: @@ -360,7 +617,32 @@ 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, 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: @@ -368,7 +650,7 @@ 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, DEFAULT_MODE) @patch("black.dump_to_file", dump_to_stderr) def test_import_spacing(self) -> None: @@ -376,7 +658,7 @@ 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, DEFAULT_MODE) @patch("black.dump_to_file", dump_to_stderr) def test_composition(self) -> None: @@ -384,7 +666,16 @@ 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, 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: @@ -392,7 +683,15 @@ 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, 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: @@ -400,66 +699,105 @@ 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, DEFAULT_MODE) @patch("black.dump_to_file", dump_to_stderr) def test_numeric_literals(self) -> None: source, expected = read_data("numeric_literals") - actual = fs(source, mode=black.FileMode.PYTHON36) + mode = replace(DEFAULT_MODE, target_versions=black.PY36_VERSIONS) + actual = fs(source, mode=mode) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) - black.assert_stable(source, actual, line_length=ll) + black.assert_stable(source, actual, mode) @patch("black.dump_to_file", dump_to_stderr) def test_numeric_literals_ignoring_underscores(self) -> None: source, expected = read_data("numeric_literals_skip_underscores") - mode = ( - black.FileMode.PYTHON36 | black.FileMode.NO_NUMERIC_UNDERSCORE_NORMALIZATION - ) + mode = replace(DEFAULT_MODE, target_versions=black.PY36_VERSIONS) actual = fs(source, mode=mode) self.assertFormatEqual(expected, actual) black.assert_equivalent(source, actual) - black.assert_stable(source, actual, line_length=ll, mode=mode) + black.assert_stable(source, actual, mode) @patch("black.dump_to_file", dump_to_stderr) def test_numeric_literals_py2(self) -> None: source, expected = read_data("numeric_literals_py2") actual = fs(source) self.assertFormatEqual(expected, actual) - black.assert_stable(source, actual, line_length=ll) + black.assert_stable(source, actual, 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, line_length=ll) + black.assert_equivalent(source, actual) + black.assert_stable(source, actual, DEFAULT_MODE) + + @patch("black.dump_to_file", dump_to_stderr) + def test_python2_print_function(self) -> None: + source, expected = read_data("python2_print_function") + mode = replace(DEFAULT_MODE, target_versions={TargetVersion.PY27}) + actual = fs(source, mode=mode) + self.assertFormatEqual(expected, actual) + black.assert_equivalent(source, actual) + black.assert_stable(source, actual, mode) @patch("black.dump_to_file", dump_to_stderr) def test_python2_unicode_literals(self) -> None: source, expected = read_data("python2_unicode_literals") actual = fs(source) self.assertFormatEqual(expected, actual) - black.assert_stable(source, actual, line_length=ll) + black.assert_equivalent(source, actual) + black.assert_stable(source, actual, DEFAULT_MODE) @patch("black.dump_to_file", dump_to_stderr) def test_stub(self) -> None: - mode = black.FileMode.PYI + 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, line_length=ll, mode=mode) + black.assert_stable(source, actual, mode) + + @patch("black.dump_to_file", dump_to_stderr) + def test_async_as_identifier(self) -> None: + source_path = (THIS_DIR / "data" / "async_as_identifier.py").resolve() + source, expected = read_data("async_as_identifier") + actual = fs(source) + self.assertFormatEqual(expected, actual) + major, minor = sys.version_info[:2] + if major < 3 or (major <= 3 and minor < 7): + black.assert_equivalent(source, actual) + black.assert_stable(source, actual, 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, line_length=ll) + 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: @@ -467,7 +805,7 @@ 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, DEFAULT_MODE) @patch("black.dump_to_file", dump_to_stderr) def test_fmtonoff2(self) -> None: @@ -475,7 +813,23 @@ 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, 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) @patch("black.dump_to_file", dump_to_stderr) def test_remove_empty_parentheses_after_class(self) -> None: @@ -483,7 +837,7 @@ 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, DEFAULT_MODE) @patch("black.dump_to_file", dump_to_stderr) def test_new_line_between_class_and_code(self) -> None: @@ -491,7 +845,7 @@ 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, DEFAULT_MODE) @patch("black.dump_to_file", dump_to_stderr) def test_bracket_match(self) -> None: @@ -499,7 +853,45 @@ 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, DEFAULT_MODE) + + @patch("black.dump_to_file", dump_to_stderr) + def test_tuple_assign(self) -> None: + source, expected = read_data("tupleassign") + actual = fs(source) + self.assertFormatEqual(expected, actual) + black.assert_equivalent(source, actual) + black.assert_stable(source, actual, DEFAULT_MODE) + + @patch("black.dump_to_file", dump_to_stderr) + def test_beginning_backslash(self) -> None: + source, expected = read_data("beginning_backslash") + actual = fs(source) + self.assertFormatEqual(expected, actual) + black.assert_equivalent(source, actual) + black.assert_stable(source, actual, DEFAULT_MODE) + + def test_tab_comment_indentation(self) -> None: + contents_tab = "if 1:\n\tif 2:\n\t\tpass\n\t# comment\n\tpass\n" + contents_spc = "if 1:\n if 2:\n pass\n # comment\n pass\n" + self.assertFormatEqual(contents_spc, fs(contents_spc)) + self.assertFormatEqual(contents_spc, fs(contents_tab)) + + contents_tab = "if 1:\n\tif 2:\n\t\tpass\n\t\t# comment\n\tpass\n" + contents_spc = "if 1:\n if 2:\n pass\n # comment\n pass\n" + self.assertFormatEqual(contents_spc, fs(contents_spc)) + self.assertFormatEqual(contents_spc, fs(contents_tab)) + + # mixed tabs and spaces (valid Python 2 code) + contents_tab = "if 1:\n if 2:\n\t\tpass\n\t# comment\n pass\n" + contents_spc = "if 1:\n if 2:\n pass\n # comment\n pass\n" + self.assertFormatEqual(contents_spc, fs(contents_spc)) + self.assertFormatEqual(contents_spc, fs(contents_tab)) + + contents_tab = "if 1:\n if 2:\n\t\tpass\n\t\t# comment\n pass\n" + contents_spc = "if 1:\n if 2:\n pass\n # comment\n pass\n" + self.assertFormatEqual(contents_spc, fs(contents_spc)) + self.assertFormatEqual(contents_spc, fs(contents_tab)) def test_report_verbose(self) -> None: report = black.Report(verbose=True) @@ -545,8 +937,8 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(err_lines[-1], "error: cannot format e1: boom") self.assertEqual( unstyle(str(report)), - "1 file reformatted, 2 files left unchanged, " - "1 file failed to reformat.", + "1 file reformatted, 2 files left unchanged, 1 file failed to" + " reformat.", ) self.assertEqual(report.return_code, 123) report.done(Path("f3"), black.Changed.YES) @@ -555,8 +947,8 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(out_lines[-1], "reformatted f3") self.assertEqual( unstyle(str(report)), - "2 files reformatted, 2 files left unchanged, " - "1 file failed to reformat.", + "2 files reformatted, 2 files left unchanged, 1 file failed to" + " reformat.", ) self.assertEqual(report.return_code, 123) report.failed(Path("e2"), "boom") @@ -565,8 +957,8 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(err_lines[-1], "error: cannot format e2: boom") self.assertEqual( unstyle(str(report)), - "2 files reformatted, 2 files left unchanged, " - "2 files failed to reformat.", + "2 files reformatted, 2 files left unchanged, 2 files failed to" + " reformat.", ) self.assertEqual(report.return_code, 123) report.path_ignored(Path("wat"), "no match") @@ -575,8 +967,8 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(out_lines[-1], "wat ignored: no match") self.assertEqual( unstyle(str(report)), - "2 files reformatted, 2 files left unchanged, " - "2 files failed to reformat.", + "2 files reformatted, 2 files left unchanged, 2 files failed to" + " reformat.", ) self.assertEqual(report.return_code, 123) report.done(Path("f4"), black.Changed.NO) @@ -585,15 +977,22 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(out_lines[-1], "f4 already well formatted, good job.") self.assertEqual( unstyle(str(report)), - "2 files reformatted, 3 files left unchanged, " - "2 files failed to reformat.", + "2 files reformatted, 3 files left unchanged, 2 files failed to" + " reformat.", ) self.assertEqual(report.return_code, 123) report.check = True self.assertEqual( unstyle(str(report)), - "2 files would be reformatted, 3 files would be left unchanged, " - "2 files would fail to reformat.", + "2 files would be reformatted, 3 files would be left unchanged, 2 files" + " would fail to reformat.", + ) + report.check = False + report.diff = True + self.assertEqual( + unstyle(str(report)), + "2 files would be reformatted, 3 files would be left unchanged, 2 files" + " would fail to reformat.", ) def test_report_quiet(self) -> None: @@ -635,8 +1034,8 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(err_lines[-1], "error: cannot format e1: boom") self.assertEqual( unstyle(str(report)), - "1 file reformatted, 2 files left unchanged, " - "1 file failed to reformat.", + "1 file reformatted, 2 files left unchanged, 1 file failed to" + " reformat.", ) self.assertEqual(report.return_code, 123) report.done(Path("f3"), black.Changed.YES) @@ -644,8 +1043,8 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(len(err_lines), 1) self.assertEqual( unstyle(str(report)), - "2 files reformatted, 2 files left unchanged, " - "1 file failed to reformat.", + "2 files reformatted, 2 files left unchanged, 1 file failed to" + " reformat.", ) self.assertEqual(report.return_code, 123) report.failed(Path("e2"), "boom") @@ -654,8 +1053,8 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(err_lines[-1], "error: cannot format e2: boom") self.assertEqual( unstyle(str(report)), - "2 files reformatted, 2 files left unchanged, " - "2 files failed to reformat.", + "2 files reformatted, 2 files left unchanged, 2 files failed to" + " reformat.", ) self.assertEqual(report.return_code, 123) report.path_ignored(Path("wat"), "no match") @@ -663,8 +1062,8 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(len(err_lines), 2) self.assertEqual( unstyle(str(report)), - "2 files reformatted, 2 files left unchanged, " - "2 files failed to reformat.", + "2 files reformatted, 2 files left unchanged, 2 files failed to" + " reformat.", ) self.assertEqual(report.return_code, 123) report.done(Path("f4"), black.Changed.NO) @@ -672,15 +1071,22 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(len(err_lines), 2) self.assertEqual( unstyle(str(report)), - "2 files reformatted, 3 files left unchanged, " - "2 files failed to reformat.", + "2 files reformatted, 3 files left unchanged, 2 files failed to" + " reformat.", ) self.assertEqual(report.return_code, 123) report.check = True self.assertEqual( unstyle(str(report)), - "2 files would be reformatted, 3 files would be left unchanged, " - "2 files would fail to reformat.", + "2 files would be reformatted, 3 files would be left unchanged, 2 files" + " would fail to reformat.", + ) + report.check = False + report.diff = True + self.assertEqual( + unstyle(str(report)), + "2 files would be reformatted, 3 files would be left unchanged, 2 files" + " would fail to reformat.", ) def test_report_normal(self) -> None: @@ -724,8 +1130,8 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(err_lines[-1], "error: cannot format e1: boom") self.assertEqual( unstyle(str(report)), - "1 file reformatted, 2 files left unchanged, " - "1 file failed to reformat.", + "1 file reformatted, 2 files left unchanged, 1 file failed to" + " reformat.", ) self.assertEqual(report.return_code, 123) report.done(Path("f3"), black.Changed.YES) @@ -734,8 +1140,8 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(out_lines[-1], "reformatted f3") self.assertEqual( unstyle(str(report)), - "2 files reformatted, 2 files left unchanged, " - "1 file failed to reformat.", + "2 files reformatted, 2 files left unchanged, 1 file failed to" + " reformat.", ) self.assertEqual(report.return_code, 123) report.failed(Path("e2"), "boom") @@ -744,8 +1150,8 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(err_lines[-1], "error: cannot format e2: boom") self.assertEqual( unstyle(str(report)), - "2 files reformatted, 2 files left unchanged, " - "2 files failed to reformat.", + "2 files reformatted, 2 files left unchanged, 2 files failed to" + " reformat.", ) self.assertEqual(report.return_code, 123) report.path_ignored(Path("wat"), "no match") @@ -753,8 +1159,8 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(len(err_lines), 2) self.assertEqual( unstyle(str(report)), - "2 files reformatted, 2 files left unchanged, " - "2 files failed to reformat.", + "2 files reformatted, 2 files left unchanged, 2 files failed to" + " reformat.", ) self.assertEqual(report.return_code, 123) report.done(Path("f4"), black.Changed.NO) @@ -762,38 +1168,79 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(len(err_lines), 2) self.assertEqual( unstyle(str(report)), - "2 files reformatted, 3 files left unchanged, " - "2 files failed to reformat.", + "2 files reformatted, 3 files left unchanged, 2 files failed to" + " reformat.", ) self.assertEqual(report.return_code, 123) report.check = True self.assertEqual( unstyle(str(report)), - "2 files would be reformatted, 3 files would be left unchanged, " - "2 files would fail to reformat.", + "2 files would be reformatted, 3 files would be left unchanged, 2 files" + " would fail to reformat.", + ) + report.check = False + report.diff = True + self.assertEqual( + unstyle(str(report)), + "2 files would be reformatted, 3 files would be left unchanged, 2 files" + " would fail to reformat.", ) - def test_is_python36(self) -> None: + def test_lib2to3_parse(self) -> None: + with self.assertRaises(black.InvalidInput): + black.lib2to3_parse("invalid syntax") + + straddling = "x + y" + black.lib2to3_parse(straddling) + black.lib2to3_parse(straddling, {TargetVersion.PY27}) + black.lib2to3_parse(straddling, {TargetVersion.PY36}) + black.lib2to3_parse(straddling, {TargetVersion.PY27, TargetVersion.PY36}) + + py2_only = "print x" + black.lib2to3_parse(py2_only) + black.lib2to3_parse(py2_only, {TargetVersion.PY27}) + with self.assertRaises(black.InvalidInput): + black.lib2to3_parse(py2_only, {TargetVersion.PY36}) + with self.assertRaises(black.InvalidInput): + black.lib2to3_parse(py2_only, {TargetVersion.PY27, TargetVersion.PY36}) + + py3_only = "exec(x, end=y)" + black.lib2to3_parse(py3_only) + with self.assertRaises(black.InvalidInput): + black.lib2to3_parse(py3_only, {TargetVersion.PY27}) + black.lib2to3_parse(py3_only, {TargetVersion.PY36}) + black.lib2to3_parse(py3_only, {TargetVersion.PY27, TargetVersion.PY36}) + + def test_get_features_used(self) -> None: node = black.lib2to3_parse("def f(*, arg): ...\n") - self.assertFalse(black.is_python36(node)) + self.assertEqual(black.get_features_used(node), set()) node = black.lib2to3_parse("def f(*, arg,): ...\n") - self.assertTrue(black.is_python36(node)) + self.assertEqual(black.get_features_used(node), {Feature.TRAILING_COMMA_IN_DEF}) + node = black.lib2to3_parse("f(*arg,)\n") + self.assertEqual( + black.get_features_used(node), {Feature.TRAILING_COMMA_IN_CALL} + ) node = black.lib2to3_parse("def f(*, arg): f'string'\n") - self.assertTrue(black.is_python36(node)) + self.assertEqual(black.get_features_used(node), {Feature.F_STRINGS}) node = black.lib2to3_parse("123_456\n") - self.assertTrue(black.is_python36(node)) + self.assertEqual(black.get_features_used(node), {Feature.NUMERIC_UNDERSCORES}) node = black.lib2to3_parse("123456\n") - self.assertFalse(black.is_python36(node)) + self.assertEqual(black.get_features_used(node), set()) source, expected = read_data("function") node = black.lib2to3_parse(source) - self.assertTrue(black.is_python36(node)) + expected_features = { + Feature.TRAILING_COMMA_IN_CALL, + Feature.TRAILING_COMMA_IN_DEF, + Feature.F_STRINGS, + } + self.assertEqual(black.get_features_used(node), expected_features) node = black.lib2to3_parse(expected) - self.assertTrue(black.is_python36(node)) + self.assertEqual(black.get_features_used(node), expected_features) source, expected = read_data("expression") node = black.lib2to3_parse(source) - self.assertFalse(black.is_python36(node)) + self.assertEqual(black.get_features_used(node), set()) node = black.lib2to3_parse(expected) - self.assertFalse(black.is_python36(node)) + self.assertEqual(black.get_features_used(node), set()) def test_get_future_imports(self) -> None: node = black.lib2to3_parse("\n") @@ -851,21 +1298,22 @@ class BlackTestCase(unittest.TestCase): def test_format_file_contents(self) -> None: empty = "" + mode = DEFAULT_MODE 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) - same = "l = [1, 2, 3]\n" + black.format_file_contents(just_nl, mode=mode, fast=False) + same = "j = [1, 2, 3]\n" with self.assertRaises(black.NothingChanged): - black.format_file_contents(same, line_length=ll, fast=False) - different = "l = [1,2,3]" + black.format_file_contents(same, mode=mode, fast=False) + different = "j = [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(black.InvalidInput) as e: - black.format_file_contents(invalid, line_length=ll, fast=False) + 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: @@ -887,7 +1335,7 @@ class BlackTestCase(unittest.TestCase): with patch("black.out", out), patch("black.err", err): with self.assertRaises(AssertionError): - self.assertFormatEqual("l = [1, 2, 3]", "l = [1, 2, 3,]") + self.assertFormatEqual("j = [1, 2, 3]", "j = [1, 2, 3,]") out_str = "".join(out_lines) self.assertTrue("Expected tree:" in out_str) @@ -895,35 +1343,33 @@ class BlackTestCase(unittest.TestCase): self.assertEqual("".join(err_lines), "") def test_cache_broken_file(self) -> None: - mode = black.FileMode.AUTO_DETECT + mode = DEFAULT_MODE 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 = DEFAULT_MODE 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) + @event_loop() def test_cache_multiple_files(self) -> None: - mode = black.FileMode.AUTO_DETECT + mode = DEFAULT_MODE with cache_dir() as workspace, patch( "black.ProcessPoolExecutor", new=ThreadPoolExecutor ): @@ -933,50 +1379,48 @@ 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 = DEFAULT_MODE 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 = DEFAULT_MODE with cache_dir(): result = CliRunner().invoke( black.main, ["-"], input=BytesIO(b"print('hello')") ) self.assertEqual(result.exit_code, 0) - cache_file = black.get_cache_file(black.DEFAULT_LINE_LENGTH, mode) + cache_file = black.get_cache_file(mode) self.assertFalse(cache_file.exists()) def test_read_cache_no_cachefile(self) -> None: - mode = black.FileMode.AUTO_DETECT + mode = DEFAULT_MODE 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 = DEFAULT_MODE 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)) @@ -997,15 +1441,15 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(done, {cached}) def test_write_cache_creates_directory_if_needed(self) -> None: - mode = black.FileMode.AUTO_DETECT + mode = DEFAULT_MODE 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) + @event_loop() def test_failed_formatting_does_not_get_cached(self) -> None: - mode = black.FileMode.AUTO_DETECT + mode = DEFAULT_MODE with cache_dir() as workspace, patch( "black.ProcessPoolExecutor", new=ThreadPoolExecutor ): @@ -1015,40 +1459,44 @@ 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 = DEFAULT_MODE 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) + @event_loop() + @patch("black.ProcessPoolExecutor", MagicMock(side_effect=OSError)) + def test_works_in_mono_process_only_environment(self) -> None: + with cache_dir() as workspace: + for f in [ + (workspace / "one.py").resolve(), + (workspace / "two.py").resolve(), + ]: + f.write_text('print("hello")\n') + self.invokeBlack([str(workspace)]) + + @event_loop() def test_check_diff_use_together(self) -> None: with cache_dir(): # Files which will be reformatted. src1 = (THIS_DIR / "data" / "string_quotes.py").resolve() - result = CliRunner().invoke(black.main, [str(src1), "--diff", "--check"]) - self.assertEqual(result.exit_code, 1, result.output) + self.invokeBlack([str(src1), "--diff", "--check"], exit_code=1) # Files which will not be reformatted. src2 = (THIS_DIR / "data" / "composition.py").resolve() - result = CliRunner().invoke(black.main, [str(src2), "--diff", "--check"]) - self.assertEqual(result.exit_code, 0, result.output) + self.invokeBlack([str(src2), "--diff", "--check"]) # Multi file command. - result = CliRunner().invoke( - black.main, [str(src1), str(src2), "--diff", "--check"] - ) - self.assertEqual(result.exit_code, 1, result.output) + self.invokeBlack([str(src1), str(src2), "--diff", "--check"], exit_code=1) def test_no_files(self) -> None: with cache_dir(): # Without an argument, black exits with error code 0. - result = CliRunner().invoke(black.main, []) - self.assertEqual(result.exit_code, 0) + self.invokeBlack([]) def test_broken_symlink(self) -> None: with cache_dir() as workspace: @@ -1057,43 +1505,49 @@ 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 = DEFAULT_MODE + short_mode = replace(DEFAULT_MODE, 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_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) + def test_single_file_force_pyi(self) -> None: - reg_mode = black.FileMode.AUTO_DETECT - pyi_mode = black.FileMode.PYI + reg_mode = DEFAULT_MODE + pyi_mode = replace(DEFAULT_MODE, 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) + @event_loop() def test_multi_file_force_pyi(self) -> None: - reg_mode = black.FileMode.AUTO_DETECT - pyi_mode = black.FileMode.PYI + reg_mode = DEFAULT_MODE + pyi_mode = replace(DEFAULT_MODE, is_pyi=True) contents, expected = read_data("force_pyi") with cache_dir() as workspace: paths = [ @@ -1103,15 +1557,14 @@ 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) @@ -1126,28 +1579,27 @@ class BlackTestCase(unittest.TestCase): 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 = DEFAULT_MODE + py36_mode = replace(DEFAULT_MODE, 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) + @event_loop() def test_multi_file_force_py36(self) -> None: - reg_mode = black.FileMode.AUTO_DETECT - py36_mode = black.FileMode.PYTHON36 + reg_mode = DEFAULT_MODE + py36_mode = replace(DEFAULT_MODE, target_versions=black.PY36_VERSIONS) source, expected = read_data("force_py36") with cache_dir() as workspace: paths = [ @@ -1157,25 +1609,31 @@ 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_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) + def test_pipe_force_py36(self) -> None: source, expected = read_data("force_py36") result = CliRunner().invoke( - black.main, ["-", "-q", "--py36"], input=BytesIO(source.encode("utf8")) + black.main, + ["-", "-q", "--target-version=py36"], + input=BytesIO(source.encode("utf8")), ) self.assertEqual(result.exit_code, 0) actual = result.output @@ -1186,6 +1644,53 @@ class BlackTestCase(unittest.TestCase): include = re.compile(r"\.pyi?$") exclude = re.compile(r"/exclude/|/\.definitely_exclude/") report = black.Report() + gitignore = PathSpec.from_lines("gitwildmatch", []) + sources: List[Path] = [] + expected = [ + Path(path / "b/dont_exclude/a.py"), + Path(path / "b/dont_exclude/a.pyi"), + ] + this_abs = THIS_DIR.resolve() + sources.extend( + black.gen_python_files( + path.iterdir(), this_abs, include, exclude, None, report, gitignore + ) + ) + self.assertEqual(sorted(expected), sorted(sources)) + + @patch("black.find_project_root", lambda *args: THIS_DIR.resolve()) + def test_exclude_for_issue_1572(self) -> None: + # Exclude shouldn't touch files that were explicitly given to Black through the + # CLI. Exclude is supposed to only apply to the recursive discovery of files. + # https://github.com/psf/black/issues/1572 + path = THIS_DIR / "data" / "include_exclude_tests" + include = "" + exclude = r"/exclude/|a\.py" + src = str(path / "b/exclude/a.py") + report = black.Report() + expected = [Path(path / "b/exclude/a.py")] + sources = list( + black.get_sources( + ctx=FakeContext(), + src=(src,), + quiet=True, + verbose=False, + include=include, + exclude=exclude, + force_exclude=None, + report=report, + ) + ) + self.assertEqual(sorted(expected), sorted(sources)) + + def test_gitignore_exclude(self) -> None: + path = THIS_DIR / "data" / "include_exclude_tests" + include = re.compile(r"\.pyi?$") + exclude = re.compile(r"") + report = black.Report() + gitignore = PathSpec.from_lines( + "gitwildmatch", ["exclude/", ".definitely_exclude"] + ) sources: List[Path] = [] expected = [ Path(path / "b/dont_exclude/a.py"), @@ -1193,13 +1698,16 @@ class BlackTestCase(unittest.TestCase): ] this_abs = THIS_DIR.resolve() sources.extend( - black.gen_python_files_in_dir(path, this_abs, include, exclude, report) + black.gen_python_files( + path.iterdir(), this_abs, include, exclude, None, report, gitignore + ) ) self.assertEqual(sorted(expected), sorted(sources)) def test_empty_include(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 = [ @@ -1215,8 +1723,14 @@ class BlackTestCase(unittest.TestCase): ] this_abs = THIS_DIR.resolve() sources.extend( - black.gen_python_files_in_dir( - path, this_abs, empty, re.compile(black.DEFAULT_EXCLUDES), report + black.gen_python_files( + path.iterdir(), + this_abs, + empty, + re.compile(black.DEFAULT_EXCLUDES), + None, + report, + gitignore, ) ) self.assertEqual(sorted(expected), sorted(sources)) @@ -1224,6 +1738,7 @@ class BlackTestCase(unittest.TestCase): def test_empty_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 = [ @@ -1236,16 +1751,21 @@ class BlackTestCase(unittest.TestCase): ] this_abs = THIS_DIR.resolve() sources.extend( - black.gen_python_files_in_dir( - path, this_abs, re.compile(black.DEFAULT_INCLUDES), empty, report + black.gen_python_files( + path.iterdir(), + this_abs, + re.compile(black.DEFAULT_INCLUDES), + empty, + None, + report, + gitignore, ) ) self.assertEqual(sorted(expected), sorted(sources)) 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: @@ -1278,18 +1798,24 @@ class BlackTestCase(unittest.TestCase): def test_symlink_out_of_root_directory(self) -> None: path = MagicMock() - root = THIS_DIR + root = THIS_DIR.resolve() child = MagicMock() include = re.compile(black.DEFAULT_INCLUDES) exclude = re.compile(black.DEFAULT_EXCLUDES) report = black.Report() + gitignore = PathSpec.from_lines("gitwildmatch", []) # `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.as_posix.return_value = "/a/b/c" child.is_symlink.return_value = True try: - list(black.gen_python_files_in_dir(path, root, include, exclude, report)) + list( + black.gen_python_files( + path.iterdir(), root, include, exclude, None, report, gitignore + ) + ) except ValueError as ve: self.fail(f"`get_python_files_in_dir()` failed: {ve}") path.iterdir.assert_called_once() @@ -1299,7 +1825,11 @@ class BlackTestCase(unittest.TestCase): # 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)) + list( + black.gen_python_files( + path.iterdir(), root, include, exclude, None, report, gitignore + ) + ) path.iterdir.assert_called() self.assertEqual(path.iterdir.call_count, 2) child.resolve.assert_called() @@ -1329,171 +1859,297 @@ class BlackTestCase(unittest.TestCase): except RuntimeError as re: self.fail(f"`patch_click()` failed, exception still raised: {re}") + def test_root_logger_not_used_directly(self) -> None: + def fail(*args: Any, **kwargs: Any) -> None: + self.fail("Record created with root logger") + + with patch.multiple( + logging.root, + debug=fail, + info=fail, + warning=fail, + error=fail, + critical=fail, + log=fail, + ): + ff(THIS_FILE) + + @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") + def test_blackd_main(self) -> None: + with patch("blackd.web.run_app"): + result = CliRunner().invoke(blackd.main, []) + if result.exception is not None: + raise result.exception + self.assertEqual(result.exit_code, 0) + + def test_invalid_config_return_code(self) -> None: + tmp_file = Path(black.dump_to_file()) + try: + tmp_config = Path(black.dump_to_file()) + tmp_config.unlink() + args = ["--config", str(tmp_config), str(tmp_file)] + self.invokeBlack(args, exit_code=2, ignore_config=False) + finally: + tmp_file.unlink() + + def test_parse_pyproject_toml(self) -> None: + test_toml_file = THIS_DIR / "test.toml" + config = black.parse_pyproject_toml(str(test_toml_file)) + self.assertEqual(config["verbose"], 1) + self.assertEqual(config["check"], "no") + self.assertEqual(config["diff"], "y") + self.assertEqual(config["color"], True) + self.assertEqual(config["line_length"], 79) + self.assertEqual(config["target_version"], ["py36", "py37", "py38"]) + self.assertEqual(config["exclude"], r"\.pyi?$") + self.assertEqual(config["include"], r"\.py?$") + + def test_read_pyproject_toml(self) -> None: + test_toml_file = THIS_DIR / "test.toml" + fake_ctx = FakeContext() + black.read_pyproject_toml(fake_ctx, FakeParameter(), str(test_toml_file)) + config = fake_ctx.default_map + self.assertEqual(config["verbose"], "1") + self.assertEqual(config["check"], "no") + self.assertEqual(config["diff"], "y") + self.assertEqual(config["color"], "True") + self.assertEqual(config["line_length"], "79") + self.assertEqual(config["target_version"], ["py36", "py37", "py38"]) + self.assertEqual(config["exclude"], r"\.pyi?$") + self.assertEqual(config["include"], r"\.py?$") + + def test_find_project_root(self) -> None: + with TemporaryDirectory() as workspace: + root = Path(workspace) + test_dir = root / "test" + test_dir.mkdir() + + src_dir = root / "src" + src_dir.mkdir() + + root_pyproject = root / "pyproject.toml" + root_pyproject.touch() + src_pyproject = src_dir / "pyproject.toml" + src_pyproject.touch() + src_python = src_dir / "foo.py" + src_python.touch() + + self.assertEqual( + black.find_project_root((src_dir, test_dir)), root.resolve() + ) + self.assertEqual(black.find_project_root((src_dir,)), src_dir.resolve()) + self.assertEqual(black.find_project_root((src_python,)), src_dir.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)) + 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") - @async_test + @unittest_run_loop 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') + 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") - @async_test + @unittest_run_loop 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"") + 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") - @async_test + @unittest_run_loop 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)}", - ) + 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") - @async_test + @unittest_run_loop 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) + 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") - @async_test + @unittest_run_loop 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) + 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") - @async_test + @unittest_run_loop async def test_blackd_invalid_python_variant(self) -> None: - app = blackd.make_app() - async with TestClient(TestServer(app)) as client: - response = await client.post( - "/", data=b"what", headers={blackd.PYTHON_VARIANT_HEADER: "lol"} + 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, 400) - + 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") - @async_test + @unittest_run_loop 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) + source, expected = read_data("stub.pyi") + response = await self.client.post( + "/", data=source, headers={blackd.PYTHON_VARIANT_HEADER: "pyi"} + ) + self.assertEqual(response.status, 200) + self.assertEqual(await response.text(), expected) + @skip_if_exception("ClientOSError") @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") - @async_test - async def test_blackd_py36(self) -> None: - app = blackd.make_app() - async with TestClient(TestServer(app)) as client: - response = await client.post( - "/", - data=( - "def f(\n" - " and_has_a_bunch_of,\n" - " very_long_arguments_too,\n" - " and_lots_of_them_as_well_lol,\n" - " **and_very_long_keyword_arguments\n" - "):\n" - " pass\n" - ), - headers={blackd.PYTHON_VARIANT_HEADER: "3.6"}, - ) - self.assertEqual(response.status, 200) - response = await client.post( - "/", - data=( - "def f(\n" - " and_has_a_bunch_of,\n" - " very_long_arguments_too,\n" - " and_lots_of_them_as_well_lol,\n" - " **and_very_long_keyword_arguments\n" - "):\n" - " pass\n" - ), - headers={blackd.PYTHON_VARIANT_HEADER: "3.5"}, - ) - self.assertEqual(response.status, 204) - response = await client.post( - "/", - data=( - "def f(\n" - " and_has_a_bunch_of,\n" - " very_long_arguments_too,\n" - " and_lots_of_them_as_well_lol,\n" - " **and_very_long_keyword_arguments\n" - "):\n" - " pass\n" - ), - headers={blackd.PYTHON_VARIANT_HEADER: "2"}, - ) - self.assertEqual(response.status, 204) + @unittest_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" + ) + + source, _ = read_data("blackd_diff.py") + expected, _ = read_data("blackd_diff.diff") + response = await self.client.post( + "/", data=source, headers={blackd.DIFF_HEADER: "true"} + ) + self.assertEqual(response.status, 200) + + actual = await response.text() + 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") - @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_run_loop + async def test_blackd_python_variant(self) -> None: + code = ( + "def f(\n" + " and_has_a_bunch_of,\n" + " very_long_arguments_too,\n" + " and_lots_of_them_as_well_lol,\n" + " **and_very_long_keyword_arguments\n" + "):\n" + " pass\n" + ) + + async def check(header_value: str, expected_status: int) -> None: + response = await self.client.post( + "/", data=code, headers={blackd.PYTHON_VARIANT_HEADER: header_value} + ) + self.assertEqual( + response.status, expected_status, msg=await response.text() + ) + await check("3.6", 200) + await check("py3.6", 200) + await check("3.6,3.7", 200) + await check("3.6,py3.7", 200) + await check("py36,py37", 200) + await check("36", 200) + await check("3.6.4", 200) + + await check("2", 204) + await check("2.7", 204) + await check("py2.7", 204) + await check("3.4", 204) + await check("py3.4", 204) + await check("py34,py36", 204) + await check("34", 204) + + @skip_if_exception("ClientOSError") @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") - @async_test + @unittest_run_loop 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) + 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") - @async_test + @unittest_run_loop 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) + response = await self.client.post( + "/", data=b'print("hello")\n', headers={blackd.LINE_LENGTH_HEADER: "NaN"} + ) + self.assertEqual(response.status, 400) + @skip_if_exception("ClientOSError") @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) + @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)) + + +with open(black.__file__, "r", encoding="utf-8") as _bf: + black_source_lines = _bf.readlines() + + +def tracefunc(frame: types.FrameType, event: str, arg: Any) -> Callable: + """Show function calls `from black/__init__.py` as they happen. + + Register this with `sys.settrace()` in a test you're debugging. + """ + if event != "call": + return tracefunc + + stack = len(inspect.stack()) - 19 + stack *= 2 + filename = frame.f_code.co_filename + lineno = frame.f_lineno + func_sig_lineno = lineno - 1 + funcname = black_source_lines[func_sig_lineno].strip() + while funcname.startswith("@"): + func_sig_lineno += 1 + funcname = black_source_lines[func_sig_lineno].strip() + if "black/__init__.py" in filename: + print(f"{' ' * stack}{lineno}:{funcname}") + return tracefunc if __name__ == "__main__":