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Add mixed-line-ending hook
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Morgan Courbet
Anthony Sottile
parent
78dffcc819
commit
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6 changed files with 388 additions and 0 deletions
154
tests/mixed_line_ending_test.py
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154
tests/mixed_line_ending_test.py
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import pytest
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from pre_commit_hooks.mixed_line_ending import mixed_line_ending
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# Input, expected return value, expected output
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TESTS_FIX_AUTO = (
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# only 'LF'
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(b'foo\nbar\nbaz\n', 0, b'foo\nbar\nbaz\n'),
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# only 'CRLF'
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(b'foo\r\nbar\r\nbaz\r\n', 0, b'foo\r\nbar\r\nbaz\r\n'),
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# only 'CR'
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(b'foo\rbar\rbaz\r', 0, b'foo\rbar\rbaz\r'),
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# mixed with majority of 'LF'
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(b'foo\r\nbar\nbaz\n', 1, b'foo\nbar\nbaz\n'),
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# mixed with majority of 'CRLF'
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(b'foo\r\nbar\nbaz\r\n', 1, b'foo\r\nbar\r\nbaz\r\n'),
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# mixed with majority of 'CR'
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(b'foo\rbar\nbaz\r', 1, b'foo\rbar\rbaz\r'),
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# mixed with as much 'LF' as 'CRLF'
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(b'foo\r\nbar\nbaz', 1, b'foo\r\nbar\nbaz'),
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# mixed with as much 'LF' as 'CR'
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(b'foo\rbar\nbaz', 1, b'foo\rbar\nbaz'),
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# mixed with as much 'CRLF' as 'CR'
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(b'foo\r\nbar\nbaz', 1, b'foo\r\nbar\nbaz'),
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# mixed with as much 'CRLF' as 'LF' as 'CR'
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(b'foo\r\nbar\nbaz\r', 1, b'foo\r\nbar\nbaz\r'),
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)
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@pytest.mark.parametrize(
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('input_s', 'expected_retval', 'output'),
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TESTS_FIX_AUTO,
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)
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def test_mixed_line_ending_fix_auto(input_s, expected_retval, output, tmpdir):
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path = tmpdir.join('file.txt')
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path.write(input_s)
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ret = mixed_line_ending(('--fix=auto', path.strpath))
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assert ret == expected_retval
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assert path.read_binary() == output
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# Input, expected return value, expected output
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TESTS_NO_FIX = (
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# only 'LF'
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(b'foo\nbar\nbaz\n', 0, b'foo\nbar\nbaz\n'),
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# only 'CRLF'
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(b'foo\r\nbar\r\nbaz\r\n', 0, b'foo\r\nbar\r\nbaz\r\n'),
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# only 'CR'
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(b'foo\rbar\rbaz\r', 0, b'foo\rbar\rbaz\r'),
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# mixed with majority of 'LF'
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(b'foo\r\nbar\nbaz\n', 1, b'foo\r\nbar\nbaz\n'),
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# mixed with majority of 'CRLF'
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(b'foo\r\nbar\nbaz\r\n', 1, b'foo\r\nbar\nbaz\r\n'),
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# mixed with majority of 'CR'
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(b'foo\rbar\nbaz\r', 1, b'foo\rbar\nbaz\r'),
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# mixed with as much 'LF' as 'CR'
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(b'foo\rbar\nbaz', 0, b'foo\rbar\nbaz'),
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# mixed with as much 'CRLF' as 'CR'
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(b'foo\r\nbar\nbaz', 0, b'foo\r\nbar\nbaz'),
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# mixed with as much 'CRLF' as 'LF' as 'CR'
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(b'foo\r\nbar\nbaz\r', 0, b'foo\r\nbar\nbaz\r'),
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)
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@pytest.mark.parametrize(
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('input_s', 'expected_retval', 'output'),
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TESTS_NO_FIX,
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)
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def test_detect_mixed_line_ending(input_s, expected_retval, output, tmpdir):
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path = tmpdir.join('file.txt')
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path.write(input_s)
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ret = mixed_line_ending(('--fix=no', path.strpath))
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assert ret == expected_retval
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assert path.read_binary() == output
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# Input, expected return value, expected output
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TESTS_FIX_FORCE_LF = (
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# only 'LF'
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(b'foo\nbar\nbaz\n', 1, b'foo\nbar\nbaz\n'),
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# only 'CRLF'
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(b'foo\r\nbar\r\nbaz\r\n', 1, b'foo\nbar\nbaz\n'),
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# only 'CR'
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(b'foo\rbar\rbaz\r', 1, b'foo\nbar\nbaz\n'),
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# mixed with majority of 'LF'
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(b'foo\r\nbar\nbaz\n', 1, b'foo\nbar\nbaz\n'),
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# mixed with majority of 'CRLF'
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(b'foo\r\nbar\nbaz\r\n', 1, b'foo\nbar\nbaz\n'),
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# mixed with majority of 'CR'
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(b'foo\rbar\nbaz\r', 1, b'foo\nbar\nbaz\n'),
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# mixed with as much 'LF' as 'CR'
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(b'foo\rbar\nbaz', 1, b'foo\nbar\nbaz'),
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# mixed with as much 'CRLF' as 'CR'
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(b'foo\r\nbar\nbaz', 1, b'foo\nbar\nbaz'),
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# mixed with as much 'CRLF' as 'LF' as 'CR'
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(b'foo\r\nbar\nbaz\r', 1, b'foo\nbar\nbaz\n'),
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)
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@pytest.mark.parametrize(
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('input_s', 'expected_retval', 'output'),
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TESTS_FIX_FORCE_LF,
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)
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def test_mixed_line_ending_fix_force_lf(
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input_s, expected_retval, output,
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tmpdir,
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):
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path = tmpdir.join('file.txt')
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path.write(input_s)
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ret = mixed_line_ending(('--fix=lf', path.strpath))
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assert ret == expected_retval
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assert path.read_binary() == output
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# Input, expected return value, expected output
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TESTS_FIX_FORCE_CRLF = (
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# only 'LF'
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(b'foo\nbar\nbaz\n', 1, b'foo\r\nbar\r\nbaz\r\n'),
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# only 'CRLF'
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(b'foo\r\nbar\r\nbaz\r\n', 1, b'foo\r\nbar\r\nbaz\r\n'),
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# only 'CR'
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(b'foo\rbar\rbaz\r', 1, b'foo\r\nbar\r\nbaz\r\n'),
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# mixed with majority of 'LF'
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(b'foo\r\nbar\nbaz\n', 1, b'foo\r\nbar\r\nbaz\r\n'),
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# mixed with majority of 'CRLF'
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(b'foo\r\nbar\nbaz\r\n', 1, b'foo\r\nbar\r\nbaz\r\n'),
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# mixed with majority of 'CR'
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(b'foo\rbar\nbaz\r', 1, b'foo\r\nbar\r\nbaz\r\n'),
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# mixed with as much 'LF' as 'CR'
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(b'foo\rbar\nbaz', 1, b'foo\r\nbar\r\nbaz'),
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# mixed with as much 'CRLF' as 'CR'
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(b'foo\r\nbar\nbaz', 1, b'foo\r\nbar\r\nbaz'),
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# mixed with as much 'CRLF' as 'LF' as 'CR'
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(b'foo\r\nbar\nbaz\r', 1, b'foo\r\nbar\r\nbaz\r\n'),
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)
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@pytest.mark.parametrize(
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('input_s', 'expected_retval', 'output'),
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TESTS_FIX_FORCE_CRLF,
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)
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def test_mixed_line_ending_fix_force_crlf(
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input_s, expected_retval, output,
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tmpdir,
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):
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path = tmpdir.join('file.txt')
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path.write(input_s)
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ret = mixed_line_ending(('--fix=crlf', path.strpath))
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assert ret == expected_retval
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assert path.read_binary() == output
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