In some of my unit tests, I find the need to set today to a different
value than the actual today. For example, to test the model method
"balance_of_today", which takes no argument, I want to have Date.today
be a specific date for the purpose of testing. In other words, I want
to do something like this:
mock_today(Date.new(2008, 2, 1)) do
... test code...
end
My implementation for mock_today is:
def mock_today(date)
$_mock_test_date = date
Date.class_eval do
class <<self
alias original_today today
end
def self.today
$_mock_test_date
end
end
yield
Date.class_eval do
class <<self
alias today original_today
end
end
end
So my questions are:
1) Is it a good idea to mock Date.today?
2) Can my implementation of mock_today be improved? I'm particularly
worried about of the use of global variable, and of class_eval, since
I heard class_eval is becoming outdated as Ruby 1.9 is coming out.
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