On 24 Sep 2008, at 16:02, Carlos Rafael Belizón Ibáñez wrote:
Sorry, before I wrote with errors the example (it's the problem if you
are remember without code at your face). This is the correct example
with the suggestions to fix the problem:
#foo.rb
class Foo < ActiveRecord::Base
has_one :bar
def foo
self.bar.count -= 1
end
end
#foo_spec.rb
require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')
describe Foo do
before(:each) do
@bar = stub_model(Bar, :count => 1)
@foo = Foo.new(:bar => @bar)
@before_value = @foo.bar
end
it "should decrement bar.count in 1" do
@foo.foo
@foo.bar.count.should be_equal(@value_before - 1)
end
end
#bar.rb
class Bar < ActiveRecord::Base
end
And now, I got this error:
1)
NoMethodError in 'Foo should decrement bar.count in 1'
undefined method `count=' for #<Bar id: 1001, created_at: nil,
updated_at: nil>
/home/carlos/NetBeansProjects/RailsApplication1/app/models/foo.rb:5:in
`foo'
/home/carlos/NetBeansProjects/RailsApplication1/spec/models/
foo_spec.rb:11:
What it's wrong? Can I make this type of test with mock or stub?
You're expecting the Bar class to implement an interface which
supports you calling count -= 1 on it.
Have you checked (for example, using script/console) that Bar does
indeed offer this method? The error indicates that it doesn't, and
from the code you've shown us I'd be surprised if it did - it's not
something you can do to normal ActiveRecord objects - you'd have to
destroy a particular instance, for example, for the result of count
to go down.
I think it might be easier for us if you can show us an example
that's closer to what you're actually trying to do.
cheers,
Matt
----
http://blog.mattwynne.net
http://songkick.com
In case you wondered: The opinions expressed in this email are my own
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