X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/f2ea461e9e9fa5c47bb61fd72d512c748928badc..756177a617b5d84e7a77c5b085d19980a5a9f1f9:/tests/test_black.py?ds=sidebyside diff --git a/tests/test_black.py b/tests/test_black.py index 29a0731..e3be9c7 100644 --- a/tests/test_black.py +++ b/tests/test_black.py @@ -6,7 +6,8 @@ from concurrent.futures import ThreadPoolExecutor from contextlib import contextmanager from dataclasses import replace import inspect -from io import BytesIO, TextIOWrapper +import io +from io import BytesIO import os from pathlib import Path from platform import system @@ -16,10 +17,8 @@ from tempfile import TemporaryDirectory import types from typing import ( Any, - BinaryIO, Callable, Dict, - Generator, List, Iterator, TypeVar, @@ -36,6 +35,7 @@ import black from black import Feature, TargetVersion from black.cache import get_cache_file from black.debug import DebugVisitor +from black.output import diff, color_diff from black.report import Report import black.files @@ -52,7 +52,6 @@ from tests.util import ( ff, dump_to_stderr, ) -from .test_primer import PrimerCLITests # noqa: F401 THIS_FILE = Path(__file__) @@ -66,6 +65,9 @@ PY36_ARGS = [f"--target-version={version.name.lower()}" for version in PY36_VERS T = TypeVar("T") R = TypeVar("R") +# Match the time output in a diff, but nothing else +DIFF_TIME = re.compile(r"\t[\d-:+\. ]+") + @contextmanager def cache_dir(exists: bool = True) -> Iterator[Path]: @@ -104,28 +106,10 @@ class FakeParameter(click.Parameter): class BlackRunner(CliRunner): - """Modify CliRunner so that stderr is not merged with stdout. - - This is a hack that can be removed once we depend on Click 7.x""" + """Make sure STDOUT and STDERR are kept separate when testing Black via its CLI.""" def __init__(self) -> None: - self.stderrbuf = BytesIO() - self.stdoutbuf = BytesIO() - self.stdout_bytes = b"" - self.stderr_bytes = b"" - super().__init__() - - @contextmanager - def isolation(self, *args: Any, **kwargs: Any) -> Generator[BinaryIO, None, None]: - with super().isolation(*args, **kwargs) as output: - try: - hold_stderr = sys.stderr - sys.stderr = TextIOWrapper(self.stderrbuf, encoding=self.charset) - yield output - finally: - self.stdout_bytes = sys.stdout.buffer.getvalue() # type: ignore - self.stderr_bytes = sys.stderr.buffer.getvalue() # type: ignore - sys.stderr = hold_stderr + super().__init__(mix_stderr=False) class BlackTestCase(BlackBaseTestCase): @@ -136,13 +120,15 @@ class BlackTestCase(BlackBaseTestCase): if ignore_config: args = ["--verbose", "--config", str(THIS_DIR / "empty.toml"), *args] result = runner.invoke(black.main, args) + assert result.stdout_bytes is not None + assert result.stderr_bytes is not None self.assertEqual( result.exit_code, exit_code, msg=( f"Failed with args: {args}\n" - f"stdout: {runner.stdout_bytes.decode()!r}\n" - f"stderr: {runner.stderr_bytes.decode()!r}\n" + f"stdout: {result.stdout_bytes.decode()!r}\n" + f"stderr: {result.stderr_bytes.decode()!r}\n" f"exception: {result.exception}" ), ) @@ -175,8 +161,9 @@ class BlackTestCase(BlackBaseTestCase): ) self.assertEqual(result.exit_code, 0) self.assertFormatEqual(expected, result.output) - black.assert_equivalent(source, result.output) - black.assert_stable(source, result.output, DEFAULT_MODE) + if source != result.output: + black.assert_equivalent(source, result.output) + black.assert_stable(source, result.output, DEFAULT_MODE) def test_piping_diff(self) -> None: diff_header = re.compile( @@ -464,37 +451,6 @@ class BlackTestCase(BlackBaseTestCase): ) self.assertEqual(expected, actual, msg) - @pytest.mark.no_python2 - def test_python2_should_fail_without_optional_install(self) -> None: - if sys.version_info < (3, 8): - self.skipTest( - "Python 3.6 and 3.7 will install typed-ast to work and as such will be" - " able to parse Python 2 syntax without explicitly specifying the" - " python2 extra" - ) - - source = "x = 1234l" - tmp_file = Path(black.dump_to_file(source)) - try: - runner = BlackRunner() - result = runner.invoke(black.main, [str(tmp_file)]) - self.assertEqual(result.exit_code, 123) - finally: - os.unlink(tmp_file) - actual = ( - runner.stderr_bytes.decode() - .replace("\n", "") - .replace("\\n", "") - .replace("\\r", "") - .replace("\r", "") - ) - msg = ( - "The requested source code has invalid Python 3 syntax." - "If you are trying to format Python 2 files please reinstall Black" - " with the 'python2' extra: `python3 -m pip install black[python2]`." - ) - self.assertIn(msg, actual) - @pytest.mark.python2 @patch("black.dump_to_file", dump_to_stderr) def test_python2_print_function(self) -> None: @@ -1426,7 +1382,7 @@ class BlackTestCase(BlackBaseTestCase): ) self.assertEqual(sorted(expected), sorted(sources)) - def test_gitingore_used_as_default(self) -> None: + def test_gitignore_used_as_default(self) -> None: path = Path(THIS_DIR / "data" / "include_exclude_tests") include = re.compile(r"\.pyi?$") extend_exclude = re.compile(r"/exclude/") @@ -1528,7 +1484,7 @@ class BlackTestCase(BlackBaseTestCase): @patch("black.find_project_root", lambda *args: THIS_DIR.resolve()) def test_get_sources_with_stdin_filename_and_exclude(self) -> None: - # Exclude shouldn't exclude stdin_filename since it is mimicing the + # Exclude shouldn't exclude stdin_filename since it is mimicking the # file being passed directly. This is the same as # test_exclude_for_issue_1572 path = THIS_DIR / "data" / "include_exclude_tests" @@ -1695,6 +1651,20 @@ class BlackTestCase(BlackBaseTestCase): # __BLACK_STDIN_FILENAME__ should have been stripped report.done.assert_called_with(expected, black.Changed.YES) + def test_reformat_one_with_stdin_empty(self) -> None: + output = io.StringIO() + with patch("io.TextIOWrapper", lambda *args, **kwargs: output): + try: + black.format_stdin_to_stdout( + fast=True, + content="", + write_back=black.WriteBack.YES, + mode=DEFAULT_MODE, + ) + except io.UnsupportedOperation: + pass # StringIO does not support detach + assert output.getvalue() == "" + def test_gitignore_exclude(self) -> None: path = THIS_DIR / "data" / "include_exclude_tests" include = re.compile(r"\.pyi?$") @@ -1723,6 +1693,33 @@ class BlackTestCase(BlackBaseTestCase): ) self.assertEqual(sorted(expected), sorted(sources)) + def test_nested_gitignore(self) -> None: + path = Path(THIS_DIR / "data" / "nested_gitignore_tests") + include = re.compile(r"\.pyi?$") + exclude = re.compile(r"") + root_gitignore = black.files.get_gitignore(path) + report = black.Report() + expected: List[Path] = [ + Path(path / "x.py"), + Path(path / "root/b.py"), + Path(path / "root/c.py"), + Path(path / "root/child/c.py"), + ] + this_abs = THIS_DIR.resolve() + sources = list( + black.gen_python_files( + path.iterdir(), + this_abs, + include, + exclude, + None, + None, + report, + root_gitignore, + ) + ) + self.assertEqual(sorted(expected), sorted(sources)) + def test_empty_include(self) -> None: path = THIS_DIR / "data" / "include_exclude_tests" report = black.Report() @@ -1785,6 +1782,16 @@ class BlackTestCase(BlackBaseTestCase): for option in ["--include", "--exclude", "--extend-exclude", "--force-exclude"]: self.invokeBlack(["-", option, "**()(!!*)"], exit_code=2) + def test_required_version_matches_version(self) -> None: + self.invokeBlack( + ["--required-version", black.__version__], exit_code=0, ignore_config=True + ) + + def test_required_version_does_not_match_version(self) -> None: + self.invokeBlack( + ["--required-version", "20.99b"], exit_code=1, ignore_config=True + ) + def test_preserves_line_endings(self) -> None: with TemporaryDirectory() as workspace: test_file = Path(workspace) / "test.py" @@ -1805,7 +1812,7 @@ class BlackTestCase(BlackBaseTestCase): black.main, ["-", "--fast"], input=BytesIO(contents.encode("utf8")) ) self.assertEqual(result.exit_code, 0) - output = runner.stdout_bytes + output = result.stdout_bytes self.assertIn(nl.encode("utf8"), output) if nl == "\n": self.assertNotIn(b"\r\n", output) @@ -1871,7 +1878,7 @@ class BlackTestCase(BlackBaseTestCase): def test_shhh_click(self) -> None: try: - from click import _unicodefun # type: ignore + from click import _unicodefun except ModuleNotFoundError: self.skipTest("Incompatible Click version") if not hasattr(_unicodefun, "_verify_python3_env"): @@ -1880,14 +1887,14 @@ class BlackTestCase(BlackBaseTestCase): with patch("locale.getpreferredencoding") as gpe: gpe.return_value = "ASCII" with self.assertRaises(RuntimeError): - _unicodefun._verify_python3_env() + _unicodefun._verify_python3_env() # type: ignore # Now, let's silence Click... black.patch_click() # ...and confirm it's silent. with patch("locale.getpreferredencoding") as gpe: gpe.return_value = "ASCII" try: - _unicodefun._verify_python3_env() + _unicodefun._verify_python3_env() # type: ignore except RuntimeError as re: self.fail(f"`patch_click()` failed, exception still raised: {re}") @@ -1904,7 +1911,7 @@ class BlackTestCase(BlackBaseTestCase): critical=fail, log=fail, ): - ff(THIS_FILE) + ff(THIS_DIR / "util.py") def test_invalid_config_return_code(self) -> None: tmp_file = Path(black.dump_to_file()) @@ -2062,6 +2069,146 @@ class BlackTestCase(BlackBaseTestCase): actual = result.output self.assertFormatEqual(actual, expected) + @staticmethod + def compare_results( + result: click.testing.Result, expected_value: str, expected_exit_code: int + ) -> None: + """Helper method to test the value and exit code of a click Result.""" + assert ( + result.output == expected_value + ), "The output did not match the expected value." + assert result.exit_code == expected_exit_code, "The exit code is incorrect." + + def test_code_option(self) -> None: + """Test the code option with no changes.""" + code = 'print("Hello world")\n' + args = ["--code", code] + result = CliRunner().invoke(black.main, args) + + self.compare_results(result, code, 0) + + def test_code_option_changed(self) -> None: + """Test the code option when changes are required.""" + code = "print('hello world')" + formatted = black.format_str(code, mode=DEFAULT_MODE) + + args = ["--code", code] + result = CliRunner().invoke(black.main, args) + + self.compare_results(result, formatted, 0) + + def test_code_option_check(self) -> None: + """Test the code option when check is passed.""" + args = ["--check", "--code", 'print("Hello world")\n'] + result = CliRunner().invoke(black.main, args) + self.compare_results(result, "", 0) + + def test_code_option_check_changed(self) -> None: + """Test the code option when changes are required, and check is passed.""" + args = ["--check", "--code", "print('hello world')"] + result = CliRunner().invoke(black.main, args) + self.compare_results(result, "", 1) + + def test_code_option_diff(self) -> None: + """Test the code option when diff is passed.""" + code = "print('hello world')" + formatted = black.format_str(code, mode=DEFAULT_MODE) + result_diff = diff(code, formatted, "STDIN", "STDOUT") + + args = ["--diff", "--code", code] + result = CliRunner().invoke(black.main, args) + + # Remove time from diff + output = DIFF_TIME.sub("", result.output) + + assert output == result_diff, "The output did not match the expected value." + assert result.exit_code == 0, "The exit code is incorrect." + + def test_code_option_color_diff(self) -> None: + """Test the code option when color and diff are passed.""" + code = "print('hello world')" + formatted = black.format_str(code, mode=DEFAULT_MODE) + + result_diff = diff(code, formatted, "STDIN", "STDOUT") + result_diff = color_diff(result_diff) + + args = ["--diff", "--color", "--code", code] + result = CliRunner().invoke(black.main, args) + + # Remove time from diff + output = DIFF_TIME.sub("", result.output) + + assert output == result_diff, "The output did not match the expected value." + assert result.exit_code == 0, "The exit code is incorrect." + + def test_code_option_safe(self) -> None: + """Test that the code option throws an error when the sanity checks fail.""" + # Patch black.assert_equivalent to ensure the sanity checks fail + with patch.object(black, "assert_equivalent", side_effect=AssertionError): + code = 'print("Hello world")' + error_msg = f"{code}\nerror: cannot format : \n" + + args = ["--safe", "--code", code] + result = CliRunner().invoke(black.main, args) + + self.compare_results(result, error_msg, 123) + + def test_code_option_fast(self) -> None: + """Test that the code option ignores errors when the sanity checks fail.""" + # Patch black.assert_equivalent to ensure the sanity checks fail + with patch.object(black, "assert_equivalent", side_effect=AssertionError): + code = 'print("Hello world")' + formatted = black.format_str(code, mode=DEFAULT_MODE) + + args = ["--fast", "--code", code] + result = CliRunner().invoke(black.main, args) + + self.compare_results(result, formatted, 0) + + def test_code_option_config(self) -> None: + """ + Test that the code option finds the pyproject.toml in the current directory. + """ + with patch.object(black, "parse_pyproject_toml", return_value={}) as parse: + # Make sure we are in the project root with the pyproject file + if not Path("tests").exists(): + os.chdir("..") + + args = ["--code", "print"] + CliRunner().invoke(black.main, args) + + pyproject_path = Path(Path().cwd(), "pyproject.toml").resolve() + assert ( + len(parse.mock_calls) >= 1 + ), "Expected config parse to be called with the current directory." + + _, call_args, _ = parse.mock_calls[0] + assert ( + call_args[0].lower() == str(pyproject_path).lower() + ), "Incorrect config loaded." + + def test_code_option_parent_config(self) -> None: + """ + Test that the code option finds the pyproject.toml in the parent directory. + """ + with patch.object(black, "parse_pyproject_toml", return_value={}) as parse: + # Make sure we are in the tests directory + if Path("tests").exists(): + os.chdir("tests") + + args = ["--code", "print"] + CliRunner().invoke(black.main, args) + + pyproject_path = Path(Path().cwd().parent, "pyproject.toml").resolve() + assert ( + len(parse.mock_calls) >= 1 + ), "Expected config parse to be called with the current directory." + + _, call_args, _ = parse.mock_calls[0] + assert ( + call_args[0].lower() == str(pyproject_path).lower() + ), "Incorrect config loaded." + with open(black.__file__, "r", encoding="utf-8") as _bf: black_source_lines = _bf.readlines()