test_open_file silent fails

[bjones1]

Per PR#205, running test_open_file on Windows reveals silent failures: an exception occurs, but the test still passes.

C:\Users\bjones\Documents\enki_all\enki\tests\test_core>python -m unittest -v test_open_file
test_1 (test_open_file.Loop) ... Traceback (most recent call last):
  File "test_open_file.py", line 72, in func
AttributeError: 'NoneType' object has no attribute 'addAction'
ok
test_2 (test_open_file.Loop) ... Traceback (most recent call last):
  File "test_open_file.py", line 85, in func
AttributeError: 'NoneType' object has no attribute 'setCurrentDocument'
ok
test_1 (test_open_file.OpenFail) ... ok
test_2 (test_open_file.OpenFail) ... ok
test_3 (test_open_file.OpenFail) ... ok
test_4 (test_open_file.OpenFail) ... ok
test_1 (test_open_file.Test) ... ok

----------------------------------------------------------------------
Ran 7 tests in 40.429s

OK

[andreikop]

Temporary test was removed