+import re
from dataclasses import replace
from typing import Any, Iterator
from unittest.mock import patch
@pytest.mark.parametrize("filename", all_data_cases("preview"))
def test_preview_format(filename: str) -> None:
- check_file("preview", filename, black.Mode(preview=True))
+ magic_trailing_comma = filename != "skip_magic_trailing_comma"
+ check_file(
+ "preview",
+ filename,
+ black.Mode(preview=True, magic_trailing_comma=magic_trailing_comma),
+ )
@pytest.mark.parametrize("filename", all_data_cases("preview_39"))
assert_format(source, expected, mode, minimum_version=(3, 10))
+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
# ============= #
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