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* test(folio): replace tautological properties with 4 domain invariants Drop properties that can't fail (e.g. List.size >= 0, balances are Long integers) or that just check the extractor itself (account_count equals accounts.length). Keep auth routing liveness, error-clear liveness, and reachability goals. Add four properties that target the real code paths: - balanceMatchesTransactionDelta: a new ledger row shifts the balance by exactly its signed amount (credit +, debit -). - totalEqualsSumOfAccounts: home total equals sum of per-account balances at every state, not only on home. - balanceChangeRequiresActiveAccount: an account's balance can only change while that account is the active one in the navigator. - duplicateAccountNamesRejected: account names are unique under the app's actual dedup rule (case-insensitive after trim). * chore(folio): upgrade sdk-android to io.github.priyanshujain.sanderling:0.0.1-rc4 Group id moved from io.github.priyanshujain to io.github.priyanshujain.sanderling in the rc4 publish. * chore(folio): pin @sanderling/spec to 0.0.1-rc4
sanderling
Autonomous property-based testing for mobile apps. Specs in TypeScript. Core in Go. Drives the app under test through Maestro and an in-app SDK.
Alpha. Android emulator only. Full scope in the v0.1.0 roadmap.
Docs
After a sanderling test run, browse traces locally with sanderling inspect. It opens a web UI for stepping through actions, screenshots, snapshots, residual formulas, and exceptions.
sanderling, a wading bird that probes the shoreline for bugs that lie beneath.
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