As bug #1477199 describes, the wrong comment below is all over the
unit test code of OSC.
# DisplayCommandBase.take_action() returns two tuples
There is no such class named DisplayCommandBase in OSC. It is in cliff.
All OSC command classes inherit from the base classes in cliff,
class Command, class Lister and class ShowOne. It is like this:
Object
|--> Command
|--> DisplayCommandBase
|--> Lister
|--> ShowOne
take_action() is an abstract method of class Command, and generally is
overwritten by subclasses.
* Command.take_action() returns nothing.
* Lister.take_action() returns a tuple which contains a tuple of columns
and a generator used to generate the data.
* ShowOne.take_action() returns an iterator which contains a tuple of
columns and a tuple of data.
So, this problem should be fixed in 3 steps:
1. Remove all DisplayCommandBase comments for tests of classes inheriting
from class Command in cliff as it returns nothing.
2. Fix all DisplayCommandBase comments for tests of classes inheriting
from class Lister in cliff. Lister.take_action() returns a tuple and
a generator.
3. Fix all DisplayCommandBase comments for tests of classes inheriting
from class ShowOne in cliff. ShowOne.take_action() returns two tuples.
This patch finishes step 2 in all but identity tests. There are too many
such comments in identity tests. So fix them all in another patch.
Change-Id: I00f38d12f55abe20fa708f6349073da658622f8d
Partial-bug: #1477199
* Add method to CommandManager to retrieve command names by group
* Add ListCommands
To list command groups loaded by cliff
Change-Id: I37fe2471aa2fafa8aa223159452d52b1981021d6
