Nick Hoffman wrote:
I had a look around for how to stub Time.now , #from_now , etc, and
came across this, which was useful:
http://devblog.michaelgalero.com/2007/11/23/actioncontroller-rspec-stub-timenow/
Unfortunately, my situation is slightly different, and causes that
solution to not be applicable. This is what I'm trying to spec:
def remember_me_for(time)
remember_me_until time.from_now.utc
end
I thought this would work:
it 'should remember a user for a period of time' do
user = create_user
one_week = 1.week
from_now = 1.week.from_now
from_now_utc = 1.week.from_now.utc
one_week.stub!(:from_now).and_return from_now
from_now.stub!(:utc).and_return from_now_utc
user.should_receive(:remember_me_until).with from_now_utc
user.remember_me_for one_week
end
But that fails, referencing the stub on "one_week":
TypeError in 'User should remember a user for a period of time'
no virtual class for Fixnum
Any suggestions for how to solve this? Thanks!
Nick
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Hey Nick,
It is generally a bad idea to stub/mock a method on the object you are
verifying the behaviour of. I would recommend a state-based approach of
testing this method as opposed to the interaction-based one you are
pursuing. The reason being is that you want to verify the behaviour of
the object as a whole. How the object uses it's internal methods and
state is none of the code example's business. Without knowing the other
methods on User I don't know the best way to verify the behavior.. What
other methods that deal with the remember functionality are part of the
public API? Assuming it is an AR model and you have a
'remember_me_until' column you could do something like:
it 'should remember a user for a period of time' do
user = create_user
user.remember_me_for(1.week)
user.remember_me_until.should == 1.week.from_now.utc
end
Again, using the #remember_me_until method is testing the internal state
of the object but without knowing your other methods I don't what the
better options (if any) are.
HTH,
Ben
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