def test_main_py36_plus_implies_py35_plus(tmpdir):
f = tmpdir.join('f.py')
f.write('x(\n **kwargs\n)\n')
assert main((f.strpath,)) == 0
assert f.read() == 'x(\n **kwargs\n)\n'
assert main((f.strpath, '--py36-plus')) == 1
assert f.read() == 'x(\n **kwargs,\n)\n'
def test_main_py35_plus_argument_star_star_kwargs(tmpdir):
f = tmpdir.join('f.py')
f.write('x(\n **args\n)\n')
assert main((f.strpath,)) == 0
assert f.read() == 'x(\n **args\n)\n'
assert main((f.strpath, '--py35-plus')) == 1
assert f.read() == 'x(\n **args,\n)\n'
def test_main_py36_plus_function_trailing_commas(tmpdir):
f = tmpdir.join('f.py')
f.write('def f(\n **kwargs\n): pass\n')
assert main((f.strpath, )) == 0
assert f.read() == 'def f(\n **kwargs\n): pass\n'
assert main((f.strpath, '--py36-plus')) == 1
assert f.read() == 'def f(\n **kwargs,\n): pass\n'
def test_main_changes_a_file(tmpdir, capsys):
f = tmpdir.join('f.py')
f.write('x(\n 1\n)\n')
assert main((f.strpath,)) == 1
out, _ = capsys.readouterr()
assert out == 'Rewriting {}\n'.format(f.strpath)
assert f.read() == 'x(\n 1,\n)\n'
def test_main_preserves_line_endings(tmpdir, capsys):
f = tmpdir.join('f.py')
f.write_binary(b'x(\r\n 1\r\n)\r\n')
assert main((f.strpath,)) == 1
_, err = capsys.readouterr()
assert err == 'Rewriting {}\n'.format(f.strpath)
assert f.read_binary() == b'x(\r\n 1,\r\n)\r\n'
def test_main_changes_a_file(tmpdir, capsys):
f = tmpdir.join('f.py')
f.write('x(\n 1\n)\n')
assert main((f.strpath, )) == 1
_, err = capsys.readouterr()
assert err == f'Rewriting {f}\n'
assert f.read() == 'x(\n 1,\n)\n'
def test_main_noop(tmpdir):
f = tmpdir.join('f.py')
f.write('x = 5\n')
assert main((f.strpath,)) == 0
assert f.read() == 'x = 5\n'
def test_main_trivial():
assert main(()) == 0
def test_main_non_utf8_bytes(tmpdir, capsys):
f = tmpdir.join('f.py')
f.write_binary('# -*- coding: cp1252 -*-\nx = €\n'.encode('cp1252'))
assert main((f.strpath,)) == 1
out, _ = capsys.readouterr()
assert out == '{} is non-utf-8 (not supported)\n'.format(f.strpath)
def test_main_syntax_error(tmpdir):
f = tmpdir.join('f.py')
f.write('from __future__ import print_function\nprint 1\n')
assert main((f.strpath,)) == 0
def test_main_stdin_with_changes(capsys):
stdin = io.TextIOWrapper(io.BytesIO(b'x(\n 1\n)\n'), 'UTF-8')
with mock.patch.object(sys, 'stdin', stdin):
assert main(('-',)) == 1
out, err = capsys.readouterr()
assert out == 'x(\n 1,\n)\n'
def test_main_exit_zero_even_if_changed(tmpdir):
f = tmpdir.join('t.py')
f.write('x(\n 1\n)')
assert not main((str(f), '--exit-zero-even-if-changed'))
assert f.read() == 'x(\n 1,\n)'
assert not main((str(f), '--exit-zero-even-if-changed'))
def test_main_py27_syntaxerror_coding(tmpdir):
f = tmpdir.join('f.py')
f.write('# -*- coding: utf-8 -*-\n[1, 2,]\n')
assert main((f.strpath, )) == 1
assert f.read() == '# -*- coding: utf-8 -*-\n[1, 2]\n'