Thank you both for the responses and links, they've been helpful. On Saturday, August 6, 2016 at 1:02:16 PM UTC-4, Tom Connors wrote: > > spec.test/instrument doesn't check the return value of spec'd functions > and according to the spec guide this is because we should be checking > function implementations at testing time, not development time. It seems to > me that adding :ret and :fn checks to instrumented functions would be > worthwhile even though tests are a better place to do those checks - since > instrumentation is meant to be turned off in production the performance hit > doesn't matter, and since we're already verifying that the arguments > conform to spec, why not check the return value as well? A benefit would be > that if we haven't yet written (or won't write) generators and tests, we > still get a confidence increase about our instrumented functions' return > values. > I'm sure this was considered, so I'm just wondering if "do that in your > tests" is the entire reason for this design choice. >
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