X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/ba64fc757c12e59fb35f2306eb4fa75fdc566647..0721f11731b64b1b134f3cb7c227a6477044e8fa:/tests/test_black.py diff --git a/tests/test_black.py b/tests/test_black.py index a3e2ff8..6fb01f7 100644 --- a/tests/test_black.py +++ b/tests/test_black.py @@ -2,25 +2,15 @@ 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 functools import partial from io import BytesIO, TextIOWrapper import os from pathlib import Path -import re +import regex as re import sys from tempfile import TemporaryDirectory -from typing import ( - Any, - BinaryIO, - Callable, - Coroutine, - Generator, - List, - Tuple, - Iterator, - TypeVar, -) +from typing import Any, BinaryIO, Generator, List, Tuple, Iterator, TypeVar import unittest from unittest.mock import patch, MagicMock @@ -32,16 +22,20 @@ 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 + ff = partial(black.format_file_in_place, mode=black.FileMode(), fast=True) fs = partial(black.format_str, mode=black.FileMode()) THIS_FILE = Path(__file__) THIS_DIR = THIS_FILE.parent +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 @@ -88,27 +82,26 @@ 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() -def async_test(f: Callable[..., Coroutine[Any, None, R]]) -> Callable[..., None]: - @event_loop(close=True) - @wraps(f) - def wrapper(*args: Any, **kwargs: Any) -> None: - asyncio.get_event_loop().run_until_complete(f(*args, **kwargs)) - return wrapper +@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 BlackRunner(CliRunner): @@ -163,9 +156,28 @@ class BlackTestCase(unittest.TestCase): ) -> None: runner = BlackRunner() if ignore_config: - args = ["--config", str(THIS_DIR / "empty.toml"), *args] + args = ["--verbose", "--config", str(THIS_DIR / "empty.toml"), *args] result = runner.invoke(black.main, args) - self.assertEqual(result.exit_code, exit_code, msg=runner.stderr_bytes.decode()) + 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) -> None: + path = THIS_DIR.parent / name + source, expected = read_data(str(path), data=False) + actual = fs(source) + self.assertFormatEqual(expected, actual) + black.assert_equivalent(source, actual) + black.assert_stable(source, actual, black.FileMode()) + self.assertFalse(ff(path)) @patch("black.dump_to_file", dump_to_stderr) def test_empty(self) -> None: @@ -186,23 +198,44 @@ 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, black.FileMode()) - 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, black.FileMode()) - self.assertFalse(ff(THIS_DIR / ".." / "black.py")) + self.checkSourceFile("black.py") + + def test_pygram(self) -> None: + self.checkSourceFile("blib2to3/pygram.py") + + def test_pytree(self) -> None: + self.checkSourceFile("blib2to3/pytree.py") + + def test_conv(self) -> None: + self.checkSourceFile("blib2to3/pgen2/conv.py") + + def test_driver(self) -> None: + self.checkSourceFile("blib2to3/pgen2/driver.py") + + def test_grammar(self) -> None: + self.checkSourceFile("blib2to3/pgen2/grammar.py") + + def test_literals(self) -> None: + self.checkSourceFile("blib2to3/pgen2/literals.py") + + def test_parse(self) -> None: + self.checkSourceFile("blib2to3/pgen2/parse.py") + + def test_pgen(self) -> None: + self.checkSourceFile("blib2to3/pgen2/pgen.py") + + def test_tokenize(self) -> None: + self.checkSourceFile("blib2to3/pgen2/tokenize.py") + + def test_token(self) -> None: + self.checkSourceFile("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) @@ -218,8 +251,8 @@ class BlackTestCase(unittest.TestCase): 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" + rf"(STDIN|STDOUT)\t\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d\.\d\d\d\d\d\d " + rf"\+\d\d\d\d" ) source, _ = read_data("expression.py") expected, _ = read_data("expression.diff") @@ -235,30 +268,51 @@ class BlackTestCase(unittest.TestCase): 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) + 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_setup(self) -> None: - source, expected = read_data("../setup", data=False) + 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, black.FileMode()) - self.assertFalse(ff(THIS_DIR / ".." / "setup.py")) @patch("black.dump_to_file", dump_to_stderr) - def test_function(self) -> None: - source, expected = read_data("function") + 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, black.FileMode()) @patch("black.dump_to_file", dump_to_stderr) - def test_function2(self) -> None: - source, expected = read_data("function2") + 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) @@ -272,6 +326,23 @@ 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_pep_572(self) -> None: + source, expected = read_data("pep_572") + actual = fs(source) + self.assertFormatEqual(expected, actual) + black.assert_stable(source, actual, black.FileMode()) + 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") tmp_file = Path(black.dump_to_file(source)) @@ -292,7 +363,7 @@ 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)]) @@ -300,17 +371,36 @@ 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/data/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") @@ -319,6 +409,23 @@ 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_pep_570(self) -> None: + source, expected = read_data("pep_570") + actual = fs(source) + self.assertFormatEqual(expected, actual) + black.assert_stable(source, actual, black.FileMode()) + 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: source, expected = read_data("string_quotes") @@ -328,10 +435,44 @@ class BlackTestCase(unittest.TestCase): black.assert_stable(source, actual, black.FileMode()) mode = black.FileMode(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, 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, black.FileMode()) + + 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, black.FileMode()) + + @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, black.FileMode()) + + @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, black.FileMode()) + @patch("black.dump_to_file", dump_to_stderr) def test_slices(self) -> None: source, expected = read_data("slices") @@ -388,6 +529,22 @@ 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_comments7(self) -> None: + source, expected = read_data("comments7") + actual = fs(source) + self.assertFormatEqual(expected, actual) + black.assert_equivalent(source, actual) + black.assert_stable(source, actual, black.FileMode()) + + @patch("black.dump_to_file", dump_to_stderr) + def test_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, black.FileMode()) + @patch("black.dump_to_file", dump_to_stderr) def test_cantfit(self) -> None: source, expected = read_data("cantfit") @@ -420,6 +577,14 @@ 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_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, black.FileMode()) + @patch("black.dump_to_file", dump_to_stderr) def test_string_prefixes(self) -> None: source, expected = read_data("string_prefixes") @@ -458,7 +623,7 @@ class BlackTestCase(unittest.TestCase): source, expected = read_data("python2") actual = fs(source) self.assertFormatEqual(expected, actual) - # black.assert_equivalent(source, actual) + black.assert_equivalent(source, actual) black.assert_stable(source, actual, black.FileMode()) @patch("black.dump_to_file", dump_to_stderr) @@ -467,6 +632,7 @@ class BlackTestCase(unittest.TestCase): mode = black.FileMode(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) @@ -474,6 +640,7 @@ class BlackTestCase(unittest.TestCase): source, expected = read_data("python2_unicode_literals") actual = fs(source) self.assertFormatEqual(expected, actual) + black.assert_equivalent(source, actual) black.assert_stable(source, actual, black.FileMode()) @patch("black.dump_to_file", dump_to_stderr) @@ -484,8 +651,24 @@ class BlackTestCase(unittest.TestCase): 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, black.FileMode()) + # 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) @@ -493,6 +676,20 @@ class BlackTestCase(unittest.TestCase): if major > 3 or (major == 3 and minor >= 7): black.assert_equivalent(source, actual) black.assert_stable(source, actual, black.FileMode()) + # 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, black.FileMode()) @patch("black.dump_to_file", dump_to_stderr) def test_fmtonoff(self) -> None: @@ -510,6 +707,22 @@ 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_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, black.FileMode()) + + @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, black.FileMode()) + @patch("black.dump_to_file", dump_to_stderr) def test_remove_empty_parentheses_after_class(self) -> None: source, expected = read_data("class_blank_parentheses") @@ -534,6 +747,22 @@ 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_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, black.FileMode()) + + @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, black.FileMode()) + 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" @@ -600,8 +829,8 @@ 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) @@ -610,8 +839,8 @@ 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") @@ -620,8 +849,8 @@ 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") @@ -630,8 +859,8 @@ 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) @@ -640,15 +869,22 @@ 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: @@ -690,8 +926,8 @@ 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) @@ -699,8 +935,8 @@ 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") @@ -709,8 +945,8 @@ 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") @@ -718,8 +954,8 @@ 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) @@ -727,15 +963,22 @@ 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: @@ -779,8 +1022,8 @@ 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) @@ -789,8 +1032,8 @@ 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") @@ -799,8 +1042,8 @@ 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") @@ -808,8 +1051,8 @@ 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) @@ -817,15 +1060,22 @@ 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_lib2to3_parse(self) -> None: @@ -857,7 +1107,11 @@ class BlackTestCase(unittest.TestCase): node = black.lib2to3_parse("def f(*, arg): ...\n") self.assertEqual(black.get_features_used(node), set()) node = black.lib2to3_parse("def f(*, arg,): ...\n") - self.assertEqual(black.get_features_used(node), {Feature.TRAILING_COMMA}) + 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.assertEqual(black.get_features_used(node), {Feature.F_STRINGS}) node = black.lib2to3_parse("123_456\n") @@ -866,13 +1120,14 @@ class BlackTestCase(unittest.TestCase): self.assertEqual(black.get_features_used(node), set()) source, expected = read_data("function") node = black.lib2to3_parse(source) - self.assertEqual( - black.get_features_used(node), {Feature.TRAILING_COMMA, Feature.F_STRINGS} - ) + 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.assertEqual( - black.get_features_used(node), {Feature.TRAILING_COMMA, Feature.F_STRINGS} - ) + self.assertEqual(black.get_features_used(node), expected_features) source, expected = read_data("expression") node = black.lib2to3_parse(source) self.assertEqual(black.get_features_used(node), set()) @@ -941,10 +1196,10 @@ class BlackTestCase(unittest.TestCase): just_nl = "\n" with self.assertRaises(black.NothingChanged): black.format_file_contents(just_nl, mode=mode, fast=False) - same = "l = [1, 2, 3]\n" + same = "j = [1, 2, 3]\n" with self.assertRaises(black.NothingChanged): black.format_file_contents(same, mode=mode, fast=False) - different = "l = [1,2,3]" + different = "j = [1,2,3]" expected = same actual = black.format_file_contents(different, mode=mode, fast=False) self.assertEqual(expected, actual) @@ -972,7 +1227,7 @@ 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) @@ -1004,7 +1259,7 @@ class BlackTestCase(unittest.TestCase): 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() with cache_dir() as workspace, patch( @@ -1084,7 +1339,7 @@ class BlackTestCase(unittest.TestCase): 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() with cache_dir() as workspace, patch( @@ -1107,7 +1362,18 @@ class BlackTestCase(unittest.TestCase): mock.side_effect = OSError 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. @@ -1145,6 +1411,13 @@ class BlackTestCase(unittest.TestCase): 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, black.FileMode()) + def test_single_file_force_pyi(self) -> None: reg_mode = black.FileMode() pyi_mode = black.FileMode(is_pyi=True) @@ -1163,7 +1436,7 @@ class BlackTestCase(unittest.TestCase): 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() pyi_mode = black.FileMode(is_pyi=True) @@ -1215,7 +1488,7 @@ class BlackTestCase(unittest.TestCase): 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() py36_mode = black.FileMode(target_versions=black.PY36_VERSIONS) @@ -1240,6 +1513,13 @@ class BlackTestCase(unittest.TestCase): 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, black.FileMode()) + def test_pipe_force_py36(self) -> None: source, expected = read_data("force_py36") result = CliRunner().invoke( @@ -1256,6 +1536,28 @@ class BlackTestCase(unittest.TestCase): include = re.compile(r"\.pyi?$") exclude = re.compile(r"/exclude/|/\.definitely_exclude/") report = black.Report() + gitignore = PathSpec.from_lines("gitwildmatch", []) + sources: List[Path] = [] + expected = [ + Path(path / "b/dont_exclude/a.py"), + Path(path / "b/dont_exclude/a.pyi"), + ] + this_abs = THIS_DIR.resolve() + sources.extend( + black.gen_python_files( + path.iterdir(), this_abs, include, [exclude], report, gitignore + ) + ) + self.assertEqual(sorted(expected), sorted(sources)) + + def test_gitignore_exclude(self) -> None: + path = THIS_DIR / "data" / "include_exclude_tests" + include = re.compile(r"\.pyi?$") + 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"), @@ -1263,13 +1565,16 @@ 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], 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 = [ @@ -1285,8 +1590,13 @@ 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)], + report, + gitignore, ) ) self.assertEqual(sorted(expected), sorted(sources)) @@ -1294,6 +1604,7 @@ 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 = [ @@ -1306,8 +1617,13 @@ 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], + report, + gitignore, ) ) self.assertEqual(sorted(expected), sorted(sources)) @@ -1352,13 +1668,19 @@ class BlackTestCase(unittest.TestCase): 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, report, gitignore + ) + ) except ValueError as ve: self.fail(f"`get_python_files_in_dir()` failed: {ve}") path.iterdir.assert_called_once() @@ -1368,7 +1690,11 @@ 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, report, gitignore + ) + ) path.iterdir.assert_called() self.assertEqual(path.iterdir.call_count, 2) child.resolve.assert_called() @@ -1414,97 +1740,132 @@ class BlackTestCase(unittest.TestCase): ff(THIS_FILE) @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") - @async_test + 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() + + +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: - 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: - - async def check(header_value: str, expected_status: int = 400) -> None: - response = await client.post( - "/", - data=b"what", - headers={blackd.PYTHON_VARIANT_HEADER: header_value}, - ) - self.assertEqual(response.status, expected_status) - - await check("lol") - await check("ruby3.5") - await check("pyi3.6") - await check("py1.5") - await check("2.8") - await check("py2.8") - await check("3.0") - await check("pypy3.0") - await check("jython3.4") - + 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") - @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 + @unittest_run_loop + async def test_blackd_diff(self) -> None: + diff_header = re.compile( + rf"(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") + @unittest_run_loop async def test_blackd_python_variant(self) -> None: - app = blackd.make_app() code = ( "def f(\n" " and_has_a_bunch_of,\n" @@ -1514,68 +1875,55 @@ class BlackTestCase(unittest.TestCase): "):\n" " pass\n" ) - async with TestClient(TestServer(app)) as client: - - async def check(header_value: str, expected_status: int) -> None: - response = await client.post( - "/", data=code, headers={blackd.PYTHON_VARIANT_HEADER: header_value} - ) - self.assertEqual(response.status, expected_status) - - await check("3.6", 200) - await check("py3.6", 200) - await check("3.5,3.7", 200) - await check("3.5,py3.7", 200) - await check("2", 204) - await check("2.7", 204) - await check("py2.7", 204) - await check("3.4", 204) - await check("py3.4", 204) - - @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed") - @async_test - async def test_blackd_fast(self) -> None: - with open(os.devnull, "w") as dn, redirect_stderr(dn): - app = blackd.make_app() - async with TestClient(TestServer(app)) as client: - response = await client.post("/", data=b"ur'hello'") - self.assertEqual(response.status, 500) - self.assertIn("failed to parse source file", await response.text()) - response = await client.post( - "/", data=b"ur'hello'", headers={blackd.FAST_OR_SAFE_HEADER: "fast"} - ) - self.assertEqual(response.status, 200) + 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)) if __name__ == "__main__":