metatest | Testing framework for C template metaprograms | Unit Testing library
kandi X-RAY | metatest Summary
kandi X-RAY | metatest Summary
Metatest is a unit testing framework for C template metaprograms. It can be integrated into other C unit testing frameworks and has its own reporting capabilities as well. There are no special steps in the compilation of unit tests compared to other C++ code.
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QUESTION
I want to automatically instantiate some classes in Python just after their modules have been imported, so there is no need to direct instantiation call. My setup can be stripped down to following code:
...ANSWER
Answered 2018-Jan-02 at 12:12First note:
for this sort of code, it is easier to be using Python 3. More about this on the first solution and at the end of the answer.
So, the name of the class itself Foo won't, obviously, be available inside the body of class Foo: this name is only bound after the class instantiation is completely performed.
In Python 3, there is the parameterless version of super() call, which can direct one to the superclass with no need for a explicit reference to the class itself. It is one of the few exceptions the language make to its very predictable mechanisms. It binds data to the super call at compile time. However, even in Python 3 it is not possible to call a method that makes use of super while the class is still being istantiated - i.e. before returning from the metaclass __new__ and __init__ methods. The data needed by the parameterless super is silently bound after that.
However, in Python 3.6+ there is a mechanism that even precludes a metaclass: a class method named __init_subclass__ will be called on the superclasses after a class is created, and it could make normal use of (parameterless) super. This would work with Python 3.6:
QUESTION
I wish to use a meta class in order to add helper methods based on the original class. If the method I wish to add uses self.__attributeName I get an AttributeError (because of name mangling) but for an existing identical method this isn't a problem.
Here is a simplified example
...ANSWER
Answered 2017-May-22 at 13:51You can use ._Test__cat to access the __cat attribute from the Test class. (where is replaced by self or any other instance of the Test class)
learn more in the Python doc
QUESTION
I'm trying to write a Python (2.7) library which loads certain classes at runtime. These classes contain a predefined set of methods.
My approach is to define a few Metaclasses which I work with in my library. I would for example define a "Navigation" Metaclass and work with it in the library. Then someone could write a class "Mainmenu" which contains some type of type definition that it is a "Navigation" plugin. And then the Library could use this class.
I am able to load modules and I'm able to write Metaclasses. My problem lies in combining these two things.
First there is the problem that I want the "plugin-classes" to be in a different (configurable) folder. So I can not do:
...ANSWER
Answered 2017-Sep-07 at 14:46So - let's check your problem steping back on your current proposal. You need a way to have plug-ins for a larger system - the larger system won't know about the plug-ins at coding time - but the converse is not true: your plugins should be able to load modules, import base classes and call functions on your larger system.
Unless you really have something so plugable that plug-ins can work with more than one larger system. I doubt so, but if that is the case you need a framework that can register interfaces and retrieve classes and adapter-implementations between different classes. That framework is Zope Interface - you should read the documentation on it here: https://zopeinterface.readthedocs.io/en/latest/
Much more down to earth will be a plug-in system that sacans some preset directories for Python files and import those. As I said above, there is no problem if these files do import base classes (or metaclasses, for the record) on your main system: these are already imported by Python in the running process anyway, their import in the plug-in will just make then show up as available on the plug-in code.
You can use the exact code above, just add a short metaclass to register derived classes from State - you can maketeh convention that each base class for a different plug-in category have the registry attribute:
QUESTION
I have a BSO cube and it's Org hierarchy is set like below:
Org:
...ANSWER
Answered 2017-Apr-26 at 22:47You need to change your filter to disallow access to the @IDESCENDANTS("TotalUS") and then have the metaread. Just because the metaread focuses on a different hierarchy doesn't mean that you've addressed the other elements in the hierarchy, which is what you need to do. The Essbase admin guide talks about some of the fundamentals of filters, including this.
QUESTION
I'm trying to understand metaclasses.
I already read this answer and I tried to use a custom __call__ like this :
ANSWER
Answered 2017-Jan-15 at 14:54You are using the Python 2 syntax for metaclasses - but your shebang line and tags indicate you are running it on Python 3.
Just change your class declaration to declare the metaclass using Python' 3 way:
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