CODEWITHSUNDEEP
rubyunit-testingrspec
davorb
davorb

Reputation: 660

How can I check what paramters a method gets with RSpec?

Let's say that I have a class called MyClass, basically I want to do something like this:

class MyClass   
  def initialize(a)
    do_stuff a, 4, 11   
  end

  def do_stuff(a,b,c)
     # ...   
  end 
end


# rspec below 
MyClass.any_instance.should_receive(:do_stuff).with_the_values(10, 
     anything, anything) 
MyClass.new 10

Basically, I want to check that initialize will call on, and pass the correct value to do_stuff.

Upvotes: 0

Views: 40

Answers (1)

Sergio Tulentsev
Sergio Tulentsev

Reputation: 230286

I think you should test if your class behaves correctly or not instead of watching who passes what to whom.

I guess, the do_stuff method is supposed to produce a side-effect of some sort. If so, then check if this side-effect is the one you expect. This way you're free to change actual implementation of your class without needing to rewrite your specs every time.

Upvotes: 2

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