Source Code for Module mvpa.tests.test_base

 1  #emacs: -*- mode: python-mode; py-indent-offset: 4; indent-tabs-mode: nil -*- 
 2  #ex: set sts=4 ts=4 sw=4 et: 
 3  ### ### ### ### ### ### ### ### ### ### ### ### ### ### ### ### ### ### ### ## 
 4  # 
 5  #   See COPYING file distributed along with the PyMVPA package for the 
 6  #   copyright and license terms. 
 7  # 
 8  ### ### ### ### ### ### ### ### ### ### ### ### ### ### ### ### ### ### ### ## 
 9  """Test some base functionality which did not make it into a separate unittests""" 
10   
11  import unittest 
12  import os.path 
13  import numpy as N 
14   
15  from mvpa import cfg 
16  from mvpa.base import externals 
17   
18   
19 -class TestBases(unittest.TestCase): 
20   
21 -    def setUp(self): 
22          self.backup = [] 
23          # clean up externals cfg for proper testing 
24          if cfg.has_section('externals'): 
25              self.backup = cfg.items('externals') 
26          cfg.remove_section('externals') 
27   
28   
29 -    def tearDown(self): 
30          if len(self.backup): 
31              if not cfg.has_section('externals'): 
32                  cfg.add_section('externals') 
33              for o,v in self.backup: 
34                  cfg.set('externals', o,v) 
35   
36   
37 -    def testExternals(self): 
38          self.failUnlessRaises(ValueError, externals.exists, 'BoGuS') 
39   
40   
41 -    def testExternalsNoDoubleInvocation(self): 
42          # no external should be checking twice (unless specified 
43          # explicitely) 
44   
45          class Checker(object): 
46              """Helper class to increment count of actual checks""" 
47              def __init__(self): self.checked = 0 
48              def check(self): self.checked += 1 
49   
50          checker = Checker() 
51   
52          externals._KNOWN['checker'] = 'checker.check()' 
53          externals.__dict__['checker'] = checker 
54          externals.exists('checker') 
55          self.failUnlessEqual(checker.checked, 1) 
56          externals.exists('checker') 
57          self.failUnlessEqual(checker.checked, 1) 
58          externals.exists('checker', force=True) 
59          self.failUnlessEqual(checker.checked, 2) 
60          externals.exists('checker') 
61          self.failUnlessEqual(checker.checked, 2) 
62   
63          # restore original externals 
64          externals.__dict__.pop('checker') 
65          externals._KNOWN.pop('checker') 
66   
67   
68 -    def testExternalsCorrect2ndInvocation(self): 
69          # always fails 
70          externals._KNOWN['checker2'] = 'raise ImportError' 
71   
72          self.failUnless(not externals.exists('checker2'), 
73                          msg="Should be False on 1st invocation") 
74   
75          self.failUnless(not externals.exists('checker2'), 
76                          msg="Should be False on 2nd invocation as well") 
77   
78          externals._KNOWN.pop('checker2') 
79   
80   
81 -def suite(): 
82      return unittest.makeSuite(TestBases) 
83   
84   
85  if __name__ == '__main__': 
86      import runner 
87