class: "EvalTest"
success: "buyLotsOfFruit correctly computes the cost of the order"
failure: "buyLotsOfFruit must compute the correct cost of the order"

# A python expression to be evaluated.  This expression must return the 
# same result for the student and instructor's code.
test: "buyLotsOfFruit.buyLotsOfFruit([ ('apples', 2.0), ('pears',3.0), ('limes',4.0) ])"