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Wyatt Alt
d04ac7ed20
Example tests pin behaviors; the refresh contract is a property: after any sequence of source mutations, a view maintained by default refreshes equals the definition evaluated against the source directly, and so does a forced rebuild. This drives every mutation sequence up to length three -- appends, deletes, updates crossing the filter, compactions, unrelated column adds -- over an identity and a filtered view shape, checking against an oracle that shares nothing with the refresh path: a plain column scan with the filter applied in Rust. The oracle runs after every step because a later rebuild-forcing mutation silently heals an incremental error; end-state checks miss exactly the transient bugs that matter. A length-four sweep runs behind ignore. Named regressions additionally assert the refresh mode, which value comparison cannot: a wrongly rebuilding classifier still matches the oracle, so the append, unrelated-column and compaction cases pin that the incremental path actually ran. <sub>Stack created with <a href="https://github.com/github/gh-stack">GitHub Stacks CLI</a> • <a href="https://gh.io/stacks-feedback">Give Feedback 💬</a></sub>