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A behaviour-driven specification and verification library

Project description

lancelot allows class and function behaviour to be specifed and verified using a DSL-like syntax, for example:

@verifiable
def can_peek_and_pop_after_push():
    spec = Spec(Stack, given=new_stack)
    spec.when(spec.push(value='a'))
    spec.then(spec.peek()).should_be('a')
    spec.then(spec.pop()).should_be('a')
    spec.then(spec.peek()).should_raise(IndexError)
    spec.then(spec.pop()).should_raise(IndexError)

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