[Tutor] Test discovery not locating module to test

[boB Stepp]

W7 64-bit. Py 3.4.3

unittest result:

E:\Projects\mcm>python -m unittest
E
======================================================================
ERROR: test.db.test_mcm_db_mgr (unittest.loader.ModuleImportFailure)
----------------------------------------------------------------------
Traceback (most recent call last):
File "C:\Python34\lib\unittest\case.py", line 58, in testPartExecutor
yield
File "C:\Python34\lib\unittest\case.py", line 577, in run
testMethod()
File "C:\Python34\lib\unittest\loader.py", line 32, in testFailure
raise exception
ImportError: Failed to import test module: test.db.test_mcm_db_mgr
Traceback (most recent call last):
File "C:\Python34\lib\unittest\loader.py", line 312, in _find_tests
module = self._get_module_from_name(name)
File "C:\Python34\lib\unittest\loader.py", line 290, in _get_module_from_name
__import__(name)
File "E:\Projects\mcm\test\db\test_mcm_db_mgr.py", line 22, in <module>
import mcm_db_mgr
ImportError: No module named 'mcm_db_mgr'


----------------------------------------------------------------------
Ran 1 test in 0.000s

FAILED (errors=1)

Relevant code in test_mcm_db_mgr.py:

import unittest

# import modules to be tested:
import mcm_db_mgr

class MCMDBMgrTestCase(unittest.TestCase):
def setUp(self):
# Insert setup code here...
pass

def test_open_mcm_db(self):
pass

def tearDown(self):
# Insert tear-down code here...
pass


I suspect that there is something wrong with my project structure.
Currently it is as follows:

Projects/
--mcm/
----.git/
----doc/
----src/
------db/
--------__init__.py
--------mcm_db_mgr.py
------ui/
--------__init__.py
----test/
------db/
--------__init__.py
--------test_mcm_db_mgr.py
------ui/
--------__init__.py
----.gitignore
----LICENSE.txt
----README.txt

All __init__.py files are currently empty. Alex had asked a question
very similar to this situation, and I thought I had understood the
answer Laura had given, but apparently I do not understand. Where am
I going wrong this time?

TIA!

[Peter Otten]

Post by boB Stepp
W7 64-bit. Py 3.4.3
E:\Projects\mcm>python -m unittest
E
======================================================================
ERROR: test.db.test_mcm_db_mgr (unittest.loader.ModuleImportFailure)
----------------------------------------------------------------------
File "C:\Python34\lib\unittest\case.py", line 58, in testPartExecutor
yield
File "C:\Python34\lib\unittest\case.py", line 577, in run
testMethod()
File "C:\Python34\lib\unittest\loader.py", line 32, in testFailure
raise exception
ImportError: Failed to import test module: test.db.test_mcm_db_mgr
File "C:\Python34\lib\unittest\loader.py", line 312, in _find_tests
module = self._get_module_from_name(name)
File "C:\Python34\lib\unittest\loader.py", line 290, in
_get_module_from_name
__import__(name)
File "E:\Projects\mcm\test\db\test_mcm_db_mgr.py", line 22, in <module>
import mcm_db_mgr
ImportError: No module named 'mcm_db_mgr'
----------------------------------------------------------------------
Ran 1 test in 0.000s
FAILED (errors=1)
import unittest
import mcm_db_mgr
# Insert setup code here...
pass
pass
# Insert tear-down code here...
pass
I suspect that there is something wrong with my project structure.
Projects/
--mcm/
----.git/
----doc/
----src/
------db/
--------__init__.py
--------mcm_db_mgr.py
------ui/
--------__init__.py
----test/
------db/
--------__init__.py
--------test_mcm_db_mgr.py
------ui/
--------__init__.py
----.gitignore
----LICENSE.txt
----README.txt
All __init__.py files are currently empty. Alex had asked a question
very similar to this situation, and I thought I had understood the
answer Laura had given, but apparently I do not understand. Where am
I going wrong this time?

Assuming E:/Projects/mcm/src is in the PYTHONPATH mcm_db_mgr.py (what an
alphabet soup!) is part of your db package and has to be imported with

import db.mcm_db_mgr

or

from db import mcm_db_mgr

by modules outside the db package.


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[boB Stepp]

Post by Peter Otten
Assuming E:/Projects/mcm/src is in the PYTHONPATH mcm_db_mgr.py (what an
alphabet soup!)...

Written out in full, this would be

montessori_classroom_manager_database_manager.py

Hmm. Perhaps just db_manager.py?

Post by Peter Otten
...is part of your db package and has to be imported with
import db.mcm_db_mgr
or
from db import mcm_db_mgr
by modules outside the db package.

I'm bad! So clear in the morning, so obscure for me just before bed.
In my defense, I have intellectually *known* about this, but have not
used the standard library much to this point, and this is the first
time I have tried this *package* structure of a project, so that
aspect is all new to me.

Thanks, Peter!

boB
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[Peter Otten]

Post by boB Stepp

Post by Peter Otten
Assuming E:/Projects/mcm/src is in the PYTHONPATH mcm_db_mgr.py (what an
alphabet soup!)...

Written out in full, this would be
montessori_classroom_manager_database_manager.py
Hmm. Perhaps just db_manager.py?

How about manager.py? If you increase the nesting level by introducing an
mcm toplevel package you can access the module formerly known as
db.mcm_db_mgr with

import mcm.db.manager

or

from mcm.db import manager

and avoid the mixture of logical "_" and physical "." separators.


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