1 # The software in this package is distributed under the GNU General
2 # Public License version 2 (with a special exception described below).
4 # A copy of GNU General Public License (GPL) is included in this distribution,
5 # in the file COPYING.GPL.
7 # As a special exception, if other files instantiate templates or use macros
8 # or inline functions from this file, or you compile this file and link it
9 # with other works to produce a work based on this file, this file
10 # does not by itself cause the resulting work to be covered
11 # by the GNU General Public License.
13 # However the source code for this file must still be made available
14 # in accordance with section (3) of the GNU General Public License.
16 # This exception does not invalidate any other reasons why a work based
17 # on this file might be covered by the GNU General Public License.
19 """ test_argparse_helpers.py: unit tests for argparse_helpers
21 Tests classes and functions in argparse_helpers
23 For help see :py:mod:`unittest`
25 .. codeauthor:: Intra2net
28 from __future__ import print_function
29 from __future__ import absolute_import
33 from os.path import isfile
34 from tempfile import mkstemp
37 # relative import of tested module ensures we do not test installed version
39 from src import argparse_helpers
40 except ImportError as ie:
41 raise RuntimeError('Failed to import tested module argparse_helpers: {}'
45 class ArgparseTester(unittest.TestCase):
46 """ only test case in this module, see module doc for more help """
48 def test_non_exit(self):
49 """Check that NonExitingParser raises the right exception."""
50 parser = argparse_helpers.NonExitingParser()
51 parser.add_argument('-a', type=int)
52 self.assertRaises(argparse_helpers.ArgParserWantsExit,
53 parser.parse_args, ['-a', 'blubb'])
55 def test_existing_file(self):
60 temp_handle, temp_file = mkstemp()
61 os.write(temp_handle, b'bla')
65 # test with existing file
66 parser = argparse_helpers.NonExitingParser()
67 parser.add_argument('--input', type=argparse_helpers.existing_file)
68 parser.parse_args(['--input', temp_file, ])
73 # test with non-existing file
74 if sys.version_info.major < 3:
75 self.assertRaises(argparse_helpers.ArgParserWantsExit,
76 parser.parse_args, ['--input', temp_file, ])
78 self.assertRaisesRegex(argparse_helpers.ArgParserWantsExit,
79 'is not an existing file',
81 ['--input', temp_file, ])
86 if temp_file and isfile(temp_file):
89 if __name__ == '__main__':