Connection: class or a method in OOP

[rsmrostov]

Hi, simple question for OOP:

I have an interface Tester Class, that i can do an dynamic method to connect via all the various methods possible

or I create a connection interface class, with all the possible connection classes as it's children and pass the the Tester Class as an Object ("Uses") relationship.  I am leaning to the latter, since I don't have to pass all the settings to a tester class, but was hoping to get a sound advice.

when a tester needs to send commands to a DUT it will need the aforementioned settings as well...

[Kevin_Price]

Another thing you might consider is Composition, which is a "Has A" relationship.  For example, a Tester might "have a" connection object as part of its class data.  

I found composition useful when setting up testing for a family of products with largely common functionality but differing communication connections, syntax, and protocols.   Because of this, I could design a device class that "had a" comm object and only needed to use its public API.  

-Kevin P

[rsmrostov]

I meant to say composition, didn't realize right away, that uses relationship is not necessarily composition.