+from dataclasses import replace
+from typing import Any, Iterator, List
from unittest.mock import patch
-import black
-from parameterized import parameterized
+import pytest
+import black
from tests.util import (
- BlackBaseTestCase,
- fs,
- ff,
DEFAULT_MODE,
+ PY36_VERSIONS,
+ THIS_DIR,
+ assert_format,
dump_to_stderr,
read_data,
- THIS_DIR,
)
-SIMPLE_CASES = [
+SIMPLE_CASES: List[str] = [
+ "attribute_access_on_number_literals",
"beginning_backslash",
"bracketmatch",
- "cantfit",
"class_blank_parentheses",
"class_methods_new_line",
"collections",
"comments4",
"comments5",
"comments6",
- "comments7",
"comments_non_breaking_space",
"comment_after_escaped_newline",
"composition",
"fmtskip3",
"fmtskip4",
"fmtskip5",
+ "fmtskip6",
"fstring",
"function",
"function2",
"function_trailing_comma",
"import_spacing",
- "long_strings",
- "long_strings__edge_case",
- "long_strings__regression",
- "numeric_literals_py2",
- "percent_precedence",
- "python2",
- "python2_unicode_literals",
+ "power_op_spacing",
"remove_parens",
"slices",
"string_prefixes",
+ "trailing_comma_optional_parens1",
+ "trailing_comma_optional_parens2",
+ "trailing_comma_optional_parens3",
"tricky_unicode_symbols",
"tupleassign",
]
+PY310_CASES: List[str] = [
+ "pattern_matching_simple",
+ "pattern_matching_complex",
+ "pattern_matching_extras",
+ "pattern_matching_style",
+ "pattern_matching_generic",
+ "parenthesized_context_managers",
+]
-SOURCES = [
- "tests/test_black.py",
- "tests/test_format.py",
- "tests/test_blackd.py",
+PREVIEW_CASES: List[str] = [
+ # string processing
+ "cantfit",
+ "comments7",
+ "long_strings",
+ "long_strings__edge_case",
+ "long_strings__regression",
+ "percent_precedence",
+]
+
+SOURCES: List[str] = [
"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/black_primer/cli.py",
+ "src/black_primer/lib.py",
"src/blib2to3/pygram.py",
"src/blib2to3/pytree.py",
"src/blib2to3/pgen2/conv.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)
- @patch("black.dump_to_file", dump_to_stderr)
- def test_simple_format(self, filename: str) -> None:
- source, expected = read_data(filename)
- actual = fs(source)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, DEFAULT_MODE)
-
- @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
- source, expected = read_data(str(path), data=False)
- actual = fs(source, mode=DEFAULT_MODE)
- self.assertFormatEqual(expected, actual)
- black.assert_equivalent(source, actual)
- black.assert_stable(source, actual, DEFAULT_MODE)
- self.assertFalse(ff(path))
+@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(filename: str, mode: black.Mode, *, data: bool = True) -> None:
+ source, expected = read_data(filename, data=data)
+ assert_format(source, expected, mode, fast=False)
+
+
+@pytest.mark.parametrize("filename", SIMPLE_CASES)
+def test_simple_format(filename: str) -> None:
+ check_file(filename, DEFAULT_MODE)
+
+
+@pytest.mark.parametrize("filename", PREVIEW_CASES)
+def test_preview_format(filename: str) -> None:
+ check_file(filename, black.Mode(preview=True))
+
+
+@pytest.mark.parametrize("filename", SOURCES)
+def test_source_is_formatted(filename: str) -> None:
+ path = THIS_DIR.parent / filename
+ check_file(str(path), DEFAULT_MODE, data=False)
+
+
+# =============== #
+# Complex cases
+# ============= #
+
+
+def test_empty() -> None:
+ source = expected = ""
+ assert_format(source, expected)
+
+
+def test_pep_572() -> None:
+ source, expected = read_data("pep_572")
+ assert_format(source, expected, minimum_version=(3, 8))
+
+
+def test_pep_572_remove_parens() -> None:
+ source, expected = read_data("pep_572_remove_parens")
+ assert_format(source, expected, minimum_version=(3, 8))
+
+
+def test_pep_572_do_not_remove_parens() -> None:
+ source, expected = read_data("pep_572_do_not_remove_parens")
+ # the AST safety checks will fail, but that's expected, just make sure no
+ # parentheses are touched
+ assert_format(source, expected, fast=True)
+
+
+@pytest.mark.parametrize("major, minor", [(3, 9), (3, 10)])
+def test_pep_572_newer_syntax(major: int, minor: int) -> None:
+ source, expected = read_data(f"pep_572_py{major}{minor}")
+ assert_format(source, expected, minimum_version=(major, minor))
+
+
+def test_pep_570() -> None:
+ source, expected = read_data("pep_570")
+ assert_format(source, expected, minimum_version=(3, 8))
+
+
+@pytest.mark.parametrize("filename", PY310_CASES)
+def test_python_310(filename: str) -> None:
+ source, expected = read_data(filename)
+ mode = black.Mode(target_versions={black.TargetVersion.PY310})
+ assert_format(source, expected, mode, minimum_version=(3, 10))
+
+
+def test_python_310_without_target_version() -> None:
+ source, expected = read_data("pattern_matching_simple")
+ mode = black.Mode()
+ assert_format(source, expected, mode, minimum_version=(3, 10))
+
+
+def test_patma_invalid() -> None:
+ source, expected = read_data("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")
+
+
+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)
+
+
+def test_docstring_no_string_normalization() -> None:
+ """Like test_docstring but with string normalization off."""
+ source, expected = read_data("docstring_no_string_normalization")
+ mode = replace(DEFAULT_MODE, string_normalization=False)
+ assert_format(source, expected, mode)
+
+
+def test_long_strings_flag_disabled() -> 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)
+ assert_format(source, expected, mode)
+
+
+def test_numeric_literals() -> None:
+ source, expected = read_data("numeric_literals")
+ mode = replace(DEFAULT_MODE, target_versions=PY36_VERSIONS)
+ assert_format(source, expected, mode)
+
+
+def test_numeric_literals_ignoring_underscores() -> None:
+ source, expected = read_data("numeric_literals_skip_underscores")
+ mode = replace(DEFAULT_MODE, target_versions=PY36_VERSIONS)
+ assert_format(source, expected, mode)
+
+
+def test_stub() -> None:
+ mode = replace(DEFAULT_MODE, is_pyi=True)
+ source, expected = read_data("stub.pyi")
+ assert_format(source, expected, mode)
+
+
+def test_python38() -> None:
+ source, expected = read_data("python38")
+ assert_format(source, expected, minimum_version=(3, 8))
+
+
+def test_python39() -> None:
+ source, expected = read_data("python39")
+ assert_format(source, expected, minimum_version=(3, 9))
+
+
+def test_power_op_newline() -> None:
+ # requires line_length=0
+ source, expected = read_data("power_op_newline")
+ assert_format(source, expected, mode=black.Mode(line_length=0))
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