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 Test classes and functions in argparse_helpers
23 For help see :py:mod:`unittest`
25 .. codeauthor:: Intra2net
30 from os.path import isfile, isdir
31 from shutil import rmtree
32 from tempfile import mkstemp, mkdtemp
34 # relative import of tested module ensures we do not test installed version
36 from src import argparse_helpers
37 except ImportError as ie:
38 raise RuntimeError('Failed to import tested module argparse_helpers: {}'
42 class ArgparseTester(unittest.TestCase):
43 """ only test case in this module, see module doc for more help """
45 def test_non_exit(self):
46 """Check that NonExitingParser raises the right exception."""
47 parser = argparse_helpers.NonExitingParser()
48 parser.add_argument('-a', type=int)
49 self.assertRaises(argparse_helpers.ArgParserWantsExit,
50 parser.parse_args, ['-a', 'blubb'])
52 def test_existing_file(self):
57 temp_handle, temp_file = mkstemp()
58 os.write(temp_handle, b'bla')
62 # test with existing file
63 parser = argparse_helpers.NonExitingParser()
64 parser.add_argument('--input', type=argparse_helpers.existing_file)
65 parser.add_argument('--input2', type=argparse_helpers.existing_file_or_empty)
66 parser.parse_args(['--input', temp_file, '--input2', temp_file])
70 if temp_file and isfile(temp_file):
73 # test with non-existing file
74 self.assertRaisesRegex(argparse_helpers.ArgParserWantsExit,
75 'is not an existing file',
77 ['--input', temp_file, ])
79 def test_existing_dir(self):
85 # test with existing dir
86 parser = argparse_helpers.NonExitingParser()
87 parser.add_argument('--input', type=argparse_helpers.existing_dir)
88 parser.add_argument('--input2', type=argparse_helpers.existing_dir_or_empty)
89 parser.parse_args(['--input', temp_dir, '--input2', temp_dir])
91 if temp_dir and isdir(temp_dir):
94 # test with non-existing dir
95 self.assertRaisesRegex(argparse_helpers.ArgParserWantsExit,
96 'is not an existing directory',
98 ['--input', temp_dir, ])
100 def test_allow_empty(self):
101 parser = argparse_helpers.NonExitingParser()
102 parser.add_argument('--file', type=argparse_helpers.existing_file_or_empty)
103 parser.add_argument('--dir', type=argparse_helpers.existing_dir_or_empty)
105 # both emtpy: no problem
106 parser.parse_args(['--file', '', '--dir', ''])
108 # test with non-existing file/dir
109 self.assertRaisesRegex(argparse_helpers.ArgParserWantsExit,
110 'is not an existing file',
112 ['--dir', '', '--file', 'not-an-existing-file'])
113 self.assertRaisesRegex(argparse_helpers.ArgParserWantsExit,
114 'is not an existing directory',
116 ['--file', '', '--dir', 'not-an-existing-dir'])
119 if __name__ == '__main__':