pj f9512354ed refactor(folio): replace txn invariants with balanceMatchesAddedTxn
Collapse noDuplicateTxnPerStep and newTxnChangesBalance into a single
per-row property: every newly-appearing ledger row's signed amount must
match the ledger balance delta. A double-submit lands two rows whose
individual amounts cannot both equal the aggregate delta, so each row
fires the property, catching both the row-count and balance-math
classes of bug under one semantic invariant.
2026-05-30 21:44:41 +05:30
2026-04-25 20:04:29 +07:00
2026-04-25 20:04:29 +07:00
2026-04-25 20:04:29 +07:00

sanderling

Autonomous property-based testing for mobile and web apps. Specs in TypeScript. Core in Go.

Alpha. Android, iOS, and web (Chrome). 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

sanderling, a wading bird that probes the shoreline for bugs that lie beneath.

S
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Readme Apache-2.0
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Go 74.6%
TypeScript 15.2%
Kotlin 5.5%
Shell 2.7%
Swift 1%
Other 0.9%