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Bogus let's you stub methods on any object, not just fakes, which makes this feature usable even in scenarios when you don't follow the Inversion of Control Principle.
When you stub/mock a method in Bogus, it will automatically ensure that:
1. The method actually exists
2. It can take the number of arguments you passed
Those of you familiar with RR stubbing syntax, will feel right at home with Bogus:
stub(object).method_name(*arguments) { return_value }
One key difference is for when you want to stub a method for any arguments:
# RR syntax
stub(object).method_name { return_value }
# Bogus syntax
stub(object).method_name(any_args) { return_value }
One other, quite important thing, is that Bogus does not erase the method signature when stubbing:
class Library
def self.checkout(book)
end
end
The following would be OK in RR:
stub(Library).checkout { "foo" }
Library.checkout("a", "b") # returns "foo"
But not in Bogus:
stub(Library).checkout(any_args) { "foo" }
Library.checkout("a", "b") # raises an error
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