X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/b8450b9faee10f3a0a63378b58adde60a27964e0..dd6c674e3a33ac6d20faea751764aeafecdf34c2:/tests/test_black.py?ds=sidebyside diff --git a/tests/test_black.py b/tests/test_black.py index 098a9ec..42ac119 100644 --- a/tests/test_black.py +++ b/tests/test_black.py @@ -6,6 +6,7 @@ from concurrent.futures import ThreadPoolExecutor from contextlib import contextmanager from dataclasses import replace import inspect +import io from io import BytesIO import os from pathlib import Path @@ -34,6 +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 @@ -63,6 +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]: @@ -115,6 +120,8 @@ 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, @@ -461,6 +468,7 @@ class BlackTestCase(BlackBaseTestCase): self.assertEqual(result.exit_code, 123) finally: os.unlink(tmp_file) + assert result.stderr_bytes is not None actual = ( result.stderr_bytes.decode() .replace("\n", "") @@ -1675,6 +1683,20 @@ 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?$") @@ -1792,6 +1814,16 @@ 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" @@ -1878,7 +1910,7 @@ 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"): @@ -1887,14 +1919,14 @@ 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}") @@ -2069,6 +2101,146 @@ 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()