e4ae213f06
* Add new flag for tests, --no-preview-line-length-1, to be used for test cases known to not work in preview mode with line-length=1. Also split out the problematic cases in three cases to separate files. Removed now redundant file which explicitly tested preview annotations with line-length=1 * mode.preview -> preview_mode, mark pep_572_remove_parens as failing with ll1
91 lines
2.6 KiB
Python
91 lines
2.6 KiB
Python
from dataclasses import replace
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from typing import Any, Iterator
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from unittest.mock import patch
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import pytest
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import black
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from black.mode import TargetVersion
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from tests.util import (
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all_data_cases,
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assert_format,
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dump_to_stderr,
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read_data,
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read_data_with_mode,
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)
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@pytest.fixture(autouse=True)
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def patch_dump_to_file(request: Any) -> Iterator[None]:
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with patch("black.dump_to_file", dump_to_stderr):
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yield
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def check_file(subdir: str, filename: str, *, data: bool = True) -> None:
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args, source, expected = read_data_with_mode(subdir, filename, data=data)
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assert_format(
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source,
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expected,
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args.mode,
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fast=args.fast,
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minimum_version=args.minimum_version,
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lines=args.lines,
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no_preview_line_length_1=args.no_preview_line_length_1,
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)
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if args.minimum_version is not None:
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major, minor = args.minimum_version
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target_version = TargetVersion[f"PY{major}{minor}"]
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mode = replace(args.mode, target_versions={target_version})
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assert_format(
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source,
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expected,
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mode,
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fast=args.fast,
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minimum_version=args.minimum_version,
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lines=args.lines,
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no_preview_line_length_1=args.no_preview_line_length_1,
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)
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@pytest.mark.filterwarnings("ignore:invalid escape sequence.*:DeprecationWarning")
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@pytest.mark.parametrize("filename", all_data_cases("cases"))
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def test_simple_format(filename: str) -> None:
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check_file("cases", filename)
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@pytest.mark.parametrize("filename", all_data_cases("line_ranges_formatted"))
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def test_line_ranges_line_by_line(filename: str) -> None:
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args, source, expected = read_data_with_mode("line_ranges_formatted", filename)
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assert (
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source == expected
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), "Test cases in line_ranges_formatted must already be formatted."
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line_count = len(source.splitlines())
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for line in range(1, line_count + 1):
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assert_format(
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source,
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expected,
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args.mode,
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fast=args.fast,
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minimum_version=args.minimum_version,
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lines=[(line, line)],
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)
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# =============== #
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# Unusual cases
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# =============== #
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def test_empty() -> None:
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source = expected = ""
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assert_format(source, expected)
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def test_patma_invalid() -> None:
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source, expected = read_data("miscellaneous", "pattern_matching_invalid")
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mode = black.Mode(target_versions={black.TargetVersion.PY310})
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with pytest.raises(black.parsing.InvalidInput) as exc_info:
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assert_format(source, expected, mode, minimum_version=(3, 10))
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exc_info.match("Cannot parse: 10:11")
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