X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/40fae18134916b8499bd992d8bef4ae23bcd2986..53c23e62df9b182edf9e7ccf726acdcf8c25846f:/tests/test_format.py diff --git a/tests/test_format.py b/tests/test_format.py index fc9678a..5a7b3bb 100644 --- a/tests/test_format.py +++ b/tests/test_format.py @@ -1,145 +1,205 @@ +import re +from dataclasses import replace +from typing import Any, Iterator from unittest.mock import patch -import black import pytest -from parameterized import parameterized +import black from tests.util import ( - BlackBaseTestCase, - fs, DEFAULT_MODE, + PY36_VERSIONS, + all_data_cases, + assert_format, dump_to_stderr, read_data, - THIS_DIR, ) -SIMPLE_CASES = [ - "beginning_backslash", - "bracketmatch", - "class_blank_parentheses", - "class_methods_new_line", - "collections", - "comments", - "comments2", - "comments3", - "comments4", - "comments5", - "comments6", - "comments_non_breaking_space", - "comment_after_escaped_newline", - "composition", - "composition_no_trailing_comma", - "docstring", - "empty_lines", - "expression", - "fmtonoff", - "fmtonoff2", - "fmtonoff3", - "fmtonoff4", - "fmtskip", - "fmtskip2", - "fmtskip3", - "fmtskip4", - "fmtskip5", - "fmtskip6", - "fstring", - "function", - "function2", - "function_trailing_comma", - "import_spacing", - "remove_parens", - "slices", - "string_prefixes", - "tricky_unicode_symbols", - "tupleassign", -] - -SIMPLE_CASES_PY2 = [ - "numeric_literals_py2", - "python2", - "python2_unicode_literals", -] - -EXPERIMENTAL_STRING_PROCESSING_CASES = [ - "cantfit", - "comments7", - "long_strings", - "long_strings__edge_case", - "long_strings__regression", - "percent_precedence", -] - - -SOURCES = [ - "src/black/__init__.py", - "src/black/__main__.py", - "src/black/brackets.py", - "src/black/cache.py", - "src/black/comments.py", - "src/black/concurrency.py", - "src/black/const.py", - "src/black/debug.py", - "src/black/files.py", - "src/black/linegen.py", - "src/black/lines.py", - "src/black/mode.py", - "src/black/nodes.py", - "src/black/numerics.py", - "src/black/output.py", - "src/black/parsing.py", - "src/black/report.py", - "src/black/rusty.py", - "src/black/strings.py", - "src/black/trans.py", - "src/blackd/__init__.py", - "src/blib2to3/pygram.py", - "src/blib2to3/pytree.py", - "src/blib2to3/pgen2/conv.py", - "src/blib2to3/pgen2/driver.py", - "src/blib2to3/pgen2/grammar.py", - "src/blib2to3/pgen2/literals.py", - "src/blib2to3/pgen2/parse.py", - "src/blib2to3/pgen2/pgen.py", - "src/blib2to3/pgen2/tokenize.py", - "src/blib2to3/pgen2/token.py", - "setup.py", - "tests/test_black.py", - "tests/test_blackd.py", - "tests/test_format.py", - "tests/test_primer.py", - "tests/optional.py", - "tests/util.py", - "tests/conftest.py", -] - - -class TestSimpleFormat(BlackBaseTestCase): - @parameterized.expand(SIMPLE_CASES_PY2) - @pytest.mark.python2 - @patch("black.dump_to_file", dump_to_stderr) - def test_simple_format_py2(self, filename: str) -> None: - self.check_file(filename, DEFAULT_MODE) - - @parameterized.expand(SIMPLE_CASES) - @patch("black.dump_to_file", dump_to_stderr) - def test_simple_format(self, filename: str) -> None: - self.check_file(filename, DEFAULT_MODE) - - @parameterized.expand(EXPERIMENTAL_STRING_PROCESSING_CASES) - @patch("black.dump_to_file", dump_to_stderr) - def test_experimental_format(self, filename: str) -> None: - self.check_file(filename, black.Mode(experimental_string_processing=True)) - - @parameterized.expand(SOURCES) - @patch("black.dump_to_file", dump_to_stderr) - def test_source_is_formatted(self, filename: str) -> None: - path = THIS_DIR.parent / filename - self.check_file(str(path), DEFAULT_MODE, data=False) - - def check_file(self, filename: str, mode: black.Mode, *, data: bool = True) -> None: - source, expected = read_data(filename, data=data) - actual = fs(source, mode=mode) - self.assertFormatEqual(expected, actual) - if source != actual: - black.assert_equivalent(source, actual) - black.assert_stable(source, actual, mode) + +@pytest.fixture(autouse=True) +def patch_dump_to_file(request: Any) -> Iterator[None]: + with patch("black.dump_to_file", dump_to_stderr): + yield + + +def check_file( + subdir: str, filename: str, mode: black.Mode, *, data: bool = True +) -> None: + source, expected = read_data(subdir, filename, data=data) + assert_format(source, expected, mode, fast=False) + + +@pytest.mark.filterwarnings("ignore:invalid escape sequence.*:DeprecationWarning") +@pytest.mark.parametrize("filename", all_data_cases("simple_cases")) +def test_simple_format(filename: str) -> None: + magic_trailing_comma = filename != "skip_magic_trailing_comma" + check_file( + "simple_cases", filename, black.Mode(magic_trailing_comma=magic_trailing_comma) + ) + + +@pytest.mark.parametrize("filename", all_data_cases("preview")) +def test_preview_format(filename: str) -> None: + check_file("preview", filename, black.Mode(preview=True)) + + +def test_preview_context_managers_targeting_py38() -> None: + source, expected = read_data("preview_context_managers", "targeting_py38.py") + mode = black.Mode(preview=True, target_versions={black.TargetVersion.PY38}) + assert_format(source, expected, mode, minimum_version=(3, 8)) + + +def test_preview_context_managers_targeting_py39() -> None: + source, expected = read_data("preview_context_managers", "targeting_py39.py") + mode = black.Mode(preview=True, target_versions={black.TargetVersion.PY39}) + assert_format(source, expected, mode, minimum_version=(3, 9)) + + +@pytest.mark.parametrize( + "filename", all_data_cases("preview_context_managers/auto_detect") +) +def test_preview_context_managers_auto_detect(filename: str) -> None: + match = re.match(r"features_3_(\d+)", filename) + assert match is not None, "Unexpected filename format: %s" % filename + source, expected = read_data("preview_context_managers/auto_detect", filename) + mode = black.Mode(preview=True) + assert_format(source, expected, mode, minimum_version=(3, int(match.group(1)))) + + +# =============== # +# Complex cases +# ============= # + + +def test_empty() -> None: + source = expected = "" + assert_format(source, expected) + + +@pytest.mark.parametrize("filename", all_data_cases("py_36")) +def test_python_36(filename: str) -> None: + source, expected = read_data("py_36", filename) + mode = black.Mode(target_versions=PY36_VERSIONS) + assert_format(source, expected, mode, minimum_version=(3, 6)) + + +@pytest.mark.parametrize("filename", all_data_cases("py_37")) +def test_python_37(filename: str) -> None: + source, expected = read_data("py_37", filename) + mode = black.Mode(target_versions={black.TargetVersion.PY37}) + assert_format(source, expected, mode, minimum_version=(3, 7)) + + +@pytest.mark.parametrize("filename", all_data_cases("py_38")) +def test_python_38(filename: str) -> None: + source, expected = read_data("py_38", filename) + mode = black.Mode(target_versions={black.TargetVersion.PY38}) + assert_format(source, expected, mode, minimum_version=(3, 8)) + + +@pytest.mark.parametrize("filename", all_data_cases("py_39")) +def test_python_39(filename: str) -> None: + source, expected = read_data("py_39", filename) + mode = black.Mode(target_versions={black.TargetVersion.PY39}) + assert_format(source, expected, mode, minimum_version=(3, 9)) + + +@pytest.mark.parametrize("filename", all_data_cases("py_310")) +def test_python_310(filename: str) -> None: + source, expected = read_data("py_310", filename) + mode = black.Mode(target_versions={black.TargetVersion.PY310}) + assert_format(source, expected, mode, minimum_version=(3, 10)) + + +@pytest.mark.parametrize("filename", all_data_cases("py_310")) +def test_python_310_without_target_version(filename: str) -> None: + source, expected = read_data("py_310", filename) + mode = black.Mode() + assert_format(source, expected, mode, minimum_version=(3, 10)) + + +def test_patma_invalid() -> None: + source, expected = read_data("miscellaneous", "pattern_matching_invalid") + mode = black.Mode(target_versions={black.TargetVersion.PY310}) + with pytest.raises(black.parsing.InvalidInput) as exc_info: + assert_format(source, expected, mode, minimum_version=(3, 10)) + + exc_info.match("Cannot parse: 10:11") + + +@pytest.mark.parametrize("filename", all_data_cases("py_311")) +def test_python_311(filename: str) -> None: + source, expected = read_data("py_311", filename) + mode = black.Mode(target_versions={black.TargetVersion.PY311}) + assert_format(source, expected, mode, minimum_version=(3, 11)) + + +@pytest.mark.parametrize("filename", all_data_cases("fast")) +def test_fast_cases(filename: str) -> None: + source, expected = read_data("fast", filename) + assert_format(source, expected, fast=True) + + +def test_python_2_hint() -> None: + with pytest.raises(black.parsing.InvalidInput) as exc_info: + assert_format("print 'daylily'", "print 'daylily'") + exc_info.match(black.parsing.PY2_HINT) + + +@pytest.mark.filterwarnings("ignore:invalid escape sequence.*:DeprecationWarning") +def test_docstring_no_string_normalization() -> None: + """Like test_docstring but with string normalization off.""" + source, expected = read_data("miscellaneous", "docstring_no_string_normalization") + mode = replace(DEFAULT_MODE, string_normalization=False) + assert_format(source, expected, mode) + + +def test_docstring_line_length_6() -> None: + """Like test_docstring but with line length set to 6.""" + source, expected = read_data("miscellaneous", "linelength6") + mode = black.Mode(line_length=6) + assert_format(source, expected, mode) + + +def test_preview_docstring_no_string_normalization() -> None: + """ + Like test_docstring but with string normalization off *and* the preview style + enabled. + """ + source, expected = read_data( + "miscellaneous", "docstring_preview_no_string_normalization" + ) + mode = replace(DEFAULT_MODE, string_normalization=False, preview=True) + assert_format(source, expected, mode) + + +def test_long_strings_flag_disabled() -> None: + """Tests for turning off the string processing logic.""" + source, expected = read_data("miscellaneous", "long_strings_flag_disabled") + mode = replace(DEFAULT_MODE, experimental_string_processing=False) + assert_format(source, expected, mode) + + +def test_stub() -> None: + mode = replace(DEFAULT_MODE, is_pyi=True) + source, expected = read_data("miscellaneous", "stub.pyi") + assert_format(source, expected, mode) + + +def test_nested_class_stub() -> None: + mode = replace(DEFAULT_MODE, is_pyi=True, preview=True) + source, expected = read_data("miscellaneous", "nested_class_stub.pyi") + assert_format(source, expected, mode) + + +def test_power_op_newline() -> None: + # requires line_length=0 + source, expected = read_data("miscellaneous", "power_op_newline") + assert_format(source, expected, mode=black.Mode(line_length=0)) + + +def test_type_comment_syntax_error() -> None: + """Test that black is able to format python code with type comment syntax errors.""" + source, expected = read_data("type_comments", "type_comment_syntax_error") + assert_format(source, expected) + black.assert_equivalent(source, expected)