our class (can be anything…, think rendering, or stream processing)
class Coffee
def cost
1.50
end
end
our decorators
jack :milk do
def cost
super() + 0.30
end
end
jack :vanilla do
def cost
super() + 0.15
end
end
the coffee
cup = Coffee.new.enrich(milk, vanilla, vanilla) # this list can…
our tests
cup.cost.should == 2.10
cup.injectors.sym_list.should == [:milk, :vanilla, :vanilla]
coffee is coffee
cup.should be_instance_of(Coffee)
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