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from __future__ import annotations
import textwrap
import pytest
from pre_commit_hooks.string_fixer import main
TESTS = (
# Base cases
("''", "''", 0),
('""', "''", 1),
(r'"\'"', r'"\'"', 0),
(r'"\""', r'"\""', 0),
(r"'\"\"'", r"'\"\"'", 0),
# String somewhere in the line
('x = "foo"', "x = 'foo'", 1),
# Test escaped characters
(r'"\'"', r'"\'"', 0),
# Docstring
('""" Foo """', '""" Foo """', 0),
(
textwrap.dedent(
"""
x = " \\
foo \\
"\n
""",
),
textwrap.dedent(
"""
x = ' \\
foo \\
'\n
""",
),
1,
),
('"foo""bar"', "'foo''bar'", 1),
pytest.param(
"f'hello{\"world\"}'",
"f'hello{\"world\"}'",
0,
id='ignore nested fstrings',
),
)
@pytest.mark.parametrize(('input_s', 'output', 'expected_retval'), TESTS)
def test_rewrite(input_s, output, expected_retval, tmpdir):
path = tmpdir.join('file.py')
path.write(input_s)
retval = main([str(path)])
assert path.read() == output
assert retval == expected_retval
def test_rewrite_crlf(tmpdir):
f = tmpdir.join('f.py')
f.write_binary(b'"foo"\r\n"bar"\r\n')
assert main((str(f),))
assert f.read_binary() == b"'foo'\r\n'bar'\r\n"
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