mirror of
https://github.com/priyanshujain/sanderling.git
synced 2026-10-03 03:27:10 +00:00
pj
57977cde0a
ax.findAll stamped every result with the query selector, and resolveCoordinates prefers the tree lookup over the element's own coordinates, so N sibling candidates all executed on the first match. On folio's Home screen the fuzzer could never open any account but the first. The gate tests identity rather than cardinality: no node other than this one answers to the rendered string, checked with the same lookup the runner runs. A rendered object selector can resolve somewhere the query never matched, so counting the query would call that unique. Claude-Session: https://claude.ai/code/session_01A5KmftdEJ49A9z5mF5ESrX
sanderling
Autonomous property-based testing for mobile and web apps.
You write rules that must always hold about your app. sanderling explores the app on its own for minutes or hours, performing thousands of taps, swipes, and inputs, and records every step where a rule breaks. No scripted test paths. One TypeScript spec runs against Android, iOS, and web builds of the same app.
import { extract, always } from "@sanderling/spec";
import { defaultActions } from "@sanderling/spec/defaults";
import { noUncaughtExceptions } from "@sanderling/spec/defaults/properties";
const balance = extract("balance", s =>
parseInt(s.ax.find({ testTag: "Balance" })?.text ?? "0", 10));
export const properties = {
noUncaughtExceptions,
balanceNeverNegative: always(() => balance.current >= 0),
};
export const actionsRoot = defaultActions;
Every run produces a trace: one JSON line and one screenshot per step. sanderling replay opens it in a web UI for stepping through actions, screenshots, property timelines, and violations.
Alpha. Android, iOS, and web (Chrome driver only). Full scope in the v0.1.0 roadmap.
Docs
- Introduction: what property-based testing is and how sanderling works
- Case study: Folio: sanderling finding a real bug in a mobile app
- Getting started: install the CLI and run it against Folio
- Spec language reference
- Examples: folio (KMP, Android/iOS/web), folio-web (React + Vite)
- Architecture for contributors
sanderling, a wading bird that probes the shoreline for bugs that lie beneath.