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from __future__ import annotations
import io
import pytest
from pre_commit_hooks.fix_encoding_pragma import _normalize_pragma
from pre_commit_hooks.fix_encoding_pragma import fix_encoding_pragma
from pre_commit_hooks.fix_encoding_pragma import main
def test_integration_inserting_pragma(tmpdir):
path = tmpdir.join('foo.py')
path.write_binary(b'import httplib\n')
assert main((str(path),)) == 1
assert path.read_binary() == (
b'# -*- coding: utf-8 -*-\n'
b'import httplib\n'
)
def test_integration_ok(tmpdir):
path = tmpdir.join('foo.py')
path.write_binary(b'# -*- coding: utf-8 -*-\nx = 1\n')
assert main((str(path),)) == 0
def test_integration_remove(tmpdir):
path = tmpdir.join('foo.py')
path.write_binary(b'# -*- coding: utf-8 -*-\nx = 1\n')
assert main((str(path), '--remove')) == 1
assert path.read_binary() == b'x = 1\n'
def test_integration_remove_ok(tmpdir):
path = tmpdir.join('foo.py')
path.write_binary(b'x = 1\n')
assert main((str(path), '--remove')) == 0
@pytest.mark.parametrize(
'input_str',
(
b'',
(
b'# -*- coding: utf-8 -*-\n'
b'x = 1\n'
),
(
b'#!/usr/bin/env python\n'
b'# -*- coding: utf-8 -*-\n'
b'foo = "bar"\n'
),
),
)
def test_ok_inputs(input_str):
bytesio = io.BytesIO(input_str)
assert fix_encoding_pragma(bytesio) == 0
bytesio.seek(0)
assert bytesio.read() == input_str
@pytest.mark.parametrize(
('input_str', 'output'),
(
(
b'import httplib\n',
b'# -*- coding: utf-8 -*-\n'
b'import httplib\n',
),
(
b'#!/usr/bin/env python\n'
b'x = 1\n',
b'#!/usr/bin/env python\n'
b'# -*- coding: utf-8 -*-\n'
b'x = 1\n',
),
(
b'#coding=utf-8\n'
b'x = 1\n',
b'# -*- coding: utf-8 -*-\n'
b'x = 1\n',
),
(
b'#!/usr/bin/env python\n'
b'#coding=utf8\n'
b'x = 1\n',
b'#!/usr/bin/env python\n'
b'# -*- coding: utf-8 -*-\n'
b'x = 1\n',
),
# These should each get truncated
(b'#coding: utf-8\n', b''),
(b'# -*- coding: utf-8 -*-\n', b''),
(b'#!/usr/bin/env python\n', b''),
(b'#!/usr/bin/env python\n#coding: utf8\n', b''),
(b'#!/usr/bin/env python\n# -*- coding: utf-8 -*-\n', b''),
),
)
def test_not_ok_inputs(input_str, output):
bytesio = io.BytesIO(input_str)
assert fix_encoding_pragma(bytesio) == 1
bytesio.seek(0)
assert bytesio.read() == output
def test_ok_input_alternate_pragma():
input_s = b'# coding: utf-8\nx = 1\n'
bytesio = io.BytesIO(input_s)
ret = fix_encoding_pragma(bytesio, expected_pragma=b'# coding: utf-8')
assert ret == 0
bytesio.seek(0)
assert bytesio.read() == input_s
def test_not_ok_input_alternate_pragma():
bytesio = io.BytesIO(b'x = 1\n')
ret = fix_encoding_pragma(bytesio, expected_pragma=b'# coding: utf-8')
assert ret == 1
bytesio.seek(0)
assert bytesio.read() == b'# coding: utf-8\nx = 1\n'
@pytest.mark.parametrize(
('input_s', 'expected'),
(
('# coding: utf-8', b'# coding: utf-8'),
# trailing whitespace
('# coding: utf-8\n', b'# coding: utf-8'),
),
)
def test_normalize_pragma(input_s, expected):
assert _normalize_pragma(input_s) == expected
def test_integration_alternate_pragma(tmpdir, capsys):
f = tmpdir.join('f.py')
f.write('x = 1\n')
pragma = '# coding: utf-8'
assert main((str(f), '--pragma', pragma)) == 1
assert f.read() == '# coding: utf-8\nx = 1\n'
out, _ = capsys.readouterr()
assert out == f'Added `# coding: utf-8` to {str(f)}\n'
def test_crlf_ok(tmpdir):
f = tmpdir.join('f.py')
f.write_binary(b'# -*- coding: utf-8 -*-\r\nx = 1\r\n')
assert not main((str(f),))
def test_crfl_adds(tmpdir):
f = tmpdir.join('f.py')
f.write_binary(b'x = 1\r\n')
assert main((str(f),))
assert f.read_binary() == b'# -*- coding: utf-8 -*-\r\nx = 1\r\n'
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