Yes, I think I get it. The actual class can interact since it is kinda necessary and vital to testing int anyhow, but when other classes are depending on MyClass, you can stub/mock since they are outside the scope or domain of the MyClass, so they shouldn't have to be depending on the dependancies of Myclass.
On Sun, Sep 23, 2012 at 8:31 PM, David Chelimsky <dchelim...@gmail.com>wrote: > On Sun, Sep 23, 2012 at 7:55 PM, S Ahmed <sahmed1...@gmail.com> wrote: > > I have a class that takes a class that inherits from activerecord as a > > parameter, e.g.: > > > > class SomeModel < ActiveRecord::Base > > end > > > > class MyClass > > attr_accessor :model > > def initialize(model) > > @model = model > > end > > end > > > > > > The class MyClass will then iterate over the Models attributes etc. > > > > Also I will need to know each attributes data type in mysql like: > integer, > > boolean, etc. > > > > So my unit tests shouldnt' rely on the database, but I'm a little > confused > > on how I can create stub/mock that will have attributes on it similiar to > > how it would be if I was creating a model and it reading the mysql > columns > > as attributes. > > > > Thoughts on how I can do this w/o actually having to depend on a database > > for my spec tests? > > There is a guideline that says "Don't mock types you don't own," which > I've just learned was coined by my colleague at DRW, Joe Walnes [1]. > > In this case, this guideline suggests that you stub/mock MyClass in > tests for the objects that interact with it, thereby isolating _them_ > from the database, but that the tests for MyClass itself are allowed > to interact w/ the database through the AR model. This limits your > dependency on AR to MyClass and its tests, so changes to ActiveRecord > and/or decisions to move to a different database abstraction don't fan > out very far. > > Make sense? > > Make sense? > _______________________________________________ > rspec-users mailing list > rspec-users@rubyforge.org > http://rubyforge.org/mailman/listinfo/rspec-users >
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