>
> spec is not a contract system. 
>

Forgive me for I am about to sin :). 

I have a little RPC framework that I use to do simple remoting between 
clojurescript in the browser and ring based web services. I'm currently 
using schema to validate arguments received from clients and return 
appropriate exceptions upon non-conforming invocations. 

The idea of being able to perform generative testing against a 
specification for these functions is really appealing but if I am using 
generative testing to verify that my functions behave properly if invoked 
as intended it does feel like there would be some benefit to ensuring that 
the conditions under which the function has been tested are enforced at 
runtime for those functions on the edges of my API. 

I'd definitely prefer a manual conformity check over instrumentation in 
these cases, but it seems like an fspec cannot be used for this purpose 
(from within the function itself). I'd rather not define my specs twice. 

Seems like I might be destined to make cheeky instrument calls after each 
of these edge functions, in the same was the always-validate metadata is 
used in schema. 

Do I have a desperate need to be convinced otherwise? :)

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