core: simplify test for methods names

The test for method names 'read_<param>' and 'write_<param>'
without a defined parameter is simplified. We do not check
anymore method names from base classes. Base classes
inheriting from HasAccessible are checked anyway at the
place they are defined.

+ add a test for it
+ move some tests to a new file test_all_modules.py, as
  test_modules.py is getting too long
+ fix missing doc string (frappy.simulation.SimDrivable.stop)

Change-Id: Id8a9afe5c977ae3b1371bd40c6da52be2fc79eb9
Reviewed-on: https://forge.frm2.tum.de/review/c/secop/frappy/+/35503
Tested-by: Jenkins Automated Tests <pedersen+jenkins@frm2.tum.de>
Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch>

test/test_modules.py

@@ -23,8 +23,6 @@
 
 import sys
 import threading
-import importlib
-from glob import glob
 import pytest
 
 from frappy.datatypes import BoolType, FloatRange, StringType, IntRange, ScaledInteger
@@ -922,27 +920,6 @@ def test_interface_classes(bases, iface_classes):
     assert m.interface_classes == iface_classes
 
 
-all_drivables = set()
-for pyfile in glob('frappy_*/*.py'):
-    module = pyfile[:-3].replace('/', '.')
-    try:
-        importlib.import_module(module)
-    except Exception as e:
-        print(module, e)
-        continue
-    for obj_ in sys.modules[module].__dict__.values():
-        if isinstance(obj_, type) and issubclass(obj_, Drivable):
-            all_drivables.add(obj_)
-
-
-@pytest.mark.parametrize('modcls', all_drivables)
-def test_stop_doc(modcls):
-    # make sure that implemented stop methods have a doc string
-    if (modcls.stop.description == Drivable.stop.description
-            and modcls.stop.func != Drivable.stop.func):
-        assert modcls.stop.func.__doc__  # stop method needs a doc string
-
-
 def test_write_error():
     updates = {}
     srv = ServerStub(updates)