Question

Background: So I have roughly (Ruby on Rails app)

class A
   def calculate_input_datetimes
      # do stuff to calculate datetimes - then for each one identified
      process_datetimes(my_datetime_start, my_datetime_end)
   end

   def process_datetimes(input_datetime_start, input_datetime_end)
      # do stuff
   end
end

So:

• I want to test that calculate_input_datetimes algorithms are working
  and calculating the correct datetimes to pass to process_datetimes
• I know I can STUB out process_datetimes so that it’s code won’t be
  involved in the test

QUESTION: How can I setup the rspec test however so I can specifically
test that the correct datestimes were attempted to be passed over to
process_datetimes, So for a given spec test that process_datetimes was
called three (3) times say with the following parameters passed:

• 2012-03-03T00:00:00+00:00, 2012-03-09T23:59:59+00:00
• 2012-03-10T00:00:00+00:00, 2012-03-16T23:59:59+00:00
• 2012-03-17T00:00:00+00:00, 2012-03-23T23:59:59+00:00

thanks

Answer 1

Sounds like you want should_receive and specifying what arguments are expected using with, for example

a.should_receive(:process_datetimes).with(date1,date2)
a.should_receive(:process_datetimes).with(date3,date4)
a.calculate_input_datetimes

There are more examples in the docs, for example you can use .ordered if the order of these calls is important