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      1 """ !Changing this line will break Test_findfile.test_found!
      2 Non-gui unit tests for idlelib.GrepDialog methods.
      3 dummy_command calls grep_it calls findfiles.
      4 An exception raised in one method will fail callers.
      5 Otherwise, tests are mostly independent.
      6 *** Currently only test grep_it.
      7 """
      8 import unittest
      9 from test.test_support import captured_stdout, findfile
     10 from idlelib.idle_test.mock_tk import Var
     11 from idlelib.GrepDialog import GrepDialog
     12 import re
     13 
     14 __file__ = findfile('idlelib/idle_test') + '/test_grep.py'
     15 
     16 class Dummy_searchengine:
     17     '''GrepDialog.__init__ calls parent SearchDiabolBase which attaches the
     18     passed in SearchEngine instance as attribute 'engine'. Only a few of the
     19     many possible self.engine.x attributes are needed here.
     20     '''
     21     def getpat(self):
     22         return self._pat
     23 
     24 searchengine = Dummy_searchengine()
     25 
     26 class Dummy_grep:
     27     # Methods tested
     28     #default_command = GrepDialog.default_command
     29     grep_it = GrepDialog.grep_it.im_func
     30     findfiles = GrepDialog.findfiles.im_func
     31     # Other stuff needed
     32     recvar = Var(False)
     33     engine = searchengine
     34     def close(self):  # gui method
     35         pass
     36 
     37 grep = Dummy_grep()
     38 
     39 class FindfilesTest(unittest.TestCase):
     40     # findfiles is really a function, not a method, could be iterator
     41     # test that filename return filename
     42     # test that idlelib has many .py files
     43     # test that recursive flag adds idle_test .py files
     44     pass
     45 
     46 class Grep_itTest(unittest.TestCase):
     47     # Test captured reports with 0 and some hits.
     48     # Should test file names, but Windows reports have mixed / and \ separators
     49     # from incomplete replacement, so 'later'.
     50 
     51     def report(self, pat):
     52         grep.engine._pat = pat
     53         with captured_stdout() as s:
     54             grep.grep_it(re.compile(pat), __file__)
     55         lines = s.getvalue().split('\n')
     56         lines.pop()  # remove bogus '' after last \n
     57         return lines
     58 
     59     def test_unfound(self):
     60         pat = 'xyz*'*7
     61         lines = self.report(pat)
     62         self.assertEqual(len(lines), 2)
     63         self.assertIn(pat, lines[0])
     64         self.assertEqual(lines[1], 'No hits.')
     65 
     66     def test_found(self):
     67 
     68         pat = '""" !Changing this line will break Test_findfile.test_found!'
     69         lines = self.report(pat)
     70         self.assertEqual(len(lines), 5)
     71         self.assertIn(pat, lines[0])
     72         self.assertIn('py: 1:', lines[1])  # line number 1
     73         self.assertIn('2', lines[3])  # hits found 2
     74         self.assertTrue(lines[4].startswith('(Hint:'))
     75 
     76 class Default_commandTest(unittest.TestCase):
     77     # To write this, mode OutputWindow import to top of GrepDialog
     78     # so it can be replaced by captured_stdout in class setup/teardown.
     79     pass
     80 
     81 if __name__ == '__main__':
     82     unittest.main(verbosity=2, exit=False)
     83