test
1. The process of exercising a product to identify differences
between expected and actual behaviour. Typically testing is
bottom-up: unit test, integration test and finally system
test. Ideally testing should be done by real users bashing on
a prototype long enough to get thoroughly acquainted with it,
with careful monitoring and followup of the results.
{Test coverage} attempts to assess how complete a test has
been.
2. The second stage in a {generate and test} search
{algorithm}.
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