26 Nov '13, 8pm

Better than unit tests by @mtnygard

Better than unit tests by @mtnygard

This approach has some similarities to property-based testing. There are two major differences: Property-based testing has a complete formal model of the system used for both case generation and invariant checking. In contrast, simulation testing uses a much simpler model of incoming traffic and a separate set of invariants. Splitting these two things makes each one simpler. Property-based testing runs its assertions immediately. To add new assertions, you must re-run the whole test. Because assertions are run after the fact, you can verify global properties about the system. For example, does "money in" balance with "money out"? Using virtual machines and storage for the system under test makes it much simpler to initialize with a known good state. We can create multiple event streams to represent different "weather conditions." E.g., a product launch scenario versus just...

Full article: http://thinkrelevance.com/blog/2013/11/26/better-than-uni...

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