In tracking down a bug in AuthLogic I realized that I had made the same
error in one of my libraries. Knowing what the error was made creating
a test to expose it (using cucumber) rather trivial. However, it has
occurred to me that this sort of issue is far more subtle than I first
appreciated. So, I am looking for some opinions on how to test for this
sort of thing in a more general sense.
At issue is the setting of config values in environment.rb files and
their influence on user code. In the specific case I encountered this
code demonstrates the essence of the situation:
def active_row?
time_now = DateTime.now
return true if (effective_from <= time_now and
(not superseded_after or superseded_after >=
time_now ))
return false
end
The error is that the time_now assignment is not testing whether or not
the default AR time is utc. The correct code is:
def active_row?
if self.class.default_timezone == :utc
time_now = DateTime.now.utc
else
time_now = DateTime.now
end
return true if (effective_from <= time_now and
(not superseded_after or superseded_after >=
time_now ))
return false
end
My question is: How does one vary the config.default_timezone, or any
configuration value for that matter, in a cucumber step definition or
RSpec test?
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