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* feat(hierarchy): name the route a native tree shows The screen name was web-only: the Chrome driver stamps sanderling-screen on the root and nothing else does, so every Android and iOS step recorded and logged an empty screen. The route marker the tree already carries (the resource id ending in Screen, the same one Transitional counts) names it. * feat(runner): say what each step did in the step log One line per step carried only an index and a node count. It now names the screen, the action, its target and the typed value, the last through the same redaction the trace and the prompt use. Emitted after the apply so the line reports what actually happened, skip reason included. * fix(sidecar): state on android whether a field is a secure entry maestro's tree mapper copies a fixed attribute list off the device's XML and password is not on it, so no android element ever reported the fact and the conservative rule downstream redacted every typed value in the trace, the prompt and the log. The XML still carries it: re-read it once per settled snapshot and state the fact on the text fields it matches. A field it cannot match stays unstated, which still reads as a credential. * docs: correct the record that android never reports a secure field Four places said android reports the fact for nothing and that every typed value there is redacted. The sidecar now states it, so they described the old behaviour. * test(sidecar): fail the build if maestro renames the call the fact comes from * fix(sidecar): state the fact on a field named by its hint alone collectTextFields matched on class only, so a node the go side calls editable off its hintText was left unstated and its typed value redacted. * docs: record that ios and web state secure:false for compose password fields Both derive the fact from a widget type a compose app never has, so the value reaches the trace in the clear. Verified on folio on both targets. * feat(android): read the application id out of an apk parses the compiled AndroidManifest.xml rather than shelling out to aapt2, which lives in the versioned build-tools directory that hosts with only platform-tools never install. Claude-Session: https://claude.ai/code/session_012PVErdr3ZzyUASeVQDWsUc * feat(cli): let --android-app-path supply the bundle id --bundle-id stays required everywhere else, and an explicit one still wins, so the apk can never quietly override what was asked for. Claude-Session: https://claude.ai/code/session_012PVErdr3ZzyUASeVQDWsUc * docs: record that the apk can name the package itself Claude-Session: https://claude.ai/code/session_012PVErdr3ZzyUASeVQDWsUc * fix(testrun): pass the jvm the flag that silences the jdk 24 unsafe warning * feat(folio): ask which android device to run on when none is named * feat(folio): pin ios recipes to one simulator udid and ask when several match * docs(ci): say how just ios lands on the simulator the boot step chose * chore(folio): ignore run output anywhere under examples/folio * refactor(hierarchy): name no screen for a tree Transitional calls a cross-fade ScreenName kept its own reading of the route markers and disagreed with Transitional on a marker repeated by a nested node: it named the screen on a step the runner was skipping as unsettled. One reading now. * refactor(sidecar): inline the one attempt passed to callViewHierarchy A named constant and its own comment for a literal used once. * test(sidecar): compare the whole tree when checking the annotation changes nothing else The old assertions checked one id string and one bounds value, and passed with every other attribute stripped off every node. Now the annotated tree minus the two facts it stated must equal the input. * fix(sidecar): match a field to its xml node by class as well as id and bounds A wrapper drawn to the same bounds as the untagged field inside it shared the field's key, both were dropped as ambiguous, and every value typed into an untagged field was redacted. The class tells them apart. * docs(runs): record what the android hierarchy re-read costs per step Two 1m runs per binary on folio, same seed, before and after the re-read.
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title
| title |
|---|
| CLI reference |
CLI reference
sanderling <command> [flags]
sanderling test
Run a spec against an app for a fixed duration.
| Flag | Default | Description |
|---|---|---|
--spec |
required | Path to the TypeScript spec. |
--bundle-id |
required | Target app bundle ID (Android: applicationId). Optional on Android when --android-app-path is given: the applicationId is read from the APK's compiled manifest. |
--device |
optional (android) | Android device serial, as adb devices reports it. Required when more than one device is attached. |
--android-app-path |
optional (android) | Path to the APK. Clear-state reinstalls from it instead of running pm clear, and it also supplies --bundle-id when that flag is absent. |
--platform |
android |
Target platform: android, ios, or web. |
--avd |
optional (android) | Android AVD name to boot if no device is connected. Required only when no device is connected and multiple AVDs exist. |
--ios-device |
optional (ios) | iOS target: a simulator name/UDID to boot, or a connected device's name, UDID, or CoreDevice id. |
--ios-app-path |
optional (ios) | Path to the .app bundle for clear-state reinstall (simulator via simctl, device via devicectl). |
--duration |
5m |
Total test duration (30s, 5m, 2h, 1d). |
--max-steps |
0 |
Stop after this many steps (0 = no cap, the duration governs). A step budget is what makes two generators comparable. |
--exit-on-violation |
false |
Stop the run at the first property violation and exit 2. |
--allow-no-properties |
false |
Run a spec that registers no properties. Such a run judges nothing and can only report no violations, so it is refused by default; pass this when the run measures what the spec extracts. |
--allow-no-generator-actions |
false |
Finish a run the action generator never drove. Such a run judged whatever screen the spec's setup left it on and explored nothing, so it is refused by default; pass this when the run measures where the generator reaches and reaching nothing is the measurement. A run that recorded a violation is never refused, flag or no flag. |
--arm |
optional | Experiment label recorded in the run's metadata. Used by the campaign tool to tell one sweep cell from another. |
--seed |
0 |
PRNG seed. 0 uses a random seed and records it in meta.json. |
--generator |
seeded |
Who picks each action: seeded (the run's PRNG) or llm (a vision model). See the LLM generator. |
--label-source |
visible-text |
How candidates are named to the llm generator: visible-text (what a user reads) or resource-id (the identifier the app assigned). The seeded generator picks by index and ignores this. |
--output |
./runs |
Output directory for traces. |
--clear-data |
true |
Clear app data before launching so the run starts from a fresh install. Pass --clear-data=false to resume prior state. |
Exit codes: 0 the run finished (violations, if any, are in the summary), 2 the run stopped on a violation under --exit-on-violation, 1 something went wrong. CI reads the difference between 2 and 1 to tell a found bug from a broken harness.
1 also covers a run that finished cleanly and holds no verdict, which is not a broken harness but is not evidence either: a spec that registers no properties, a run no step of which reached the verifier, and a run whose action generator never drove the app and found nothing. Each names itself on stderr and leaves its full run directory behind, and each has a flag that says "this is the measurement" when it is.
sanderling replay [run-or-runs-dir]
Serve a local web UI for browsing traces. The positional argument is optional and may point at either a runs directory (the parent of many runs) or a single run directory (auto-detected by the presence of meta.json). Defaults to ./runs.
| Flag | Default | Description |
|---|---|---|
--port |
0 (ephemeral) |
TCP port to listen on. |
--no-open |
false |
Skip opening the default browser on startup. |
--dev |
false |
Reverse-proxy non-API requests to the Vite dev server on 127.0.0.1:5173. |
See the replay UI page for the panel reference and keyboard shortcuts.
sanderling doctor
Check the host environment for a working sanderling setup.
sanderling doctor [--platform web|android|ios|ios-device|all]
--platform defaults to all, which runs every platform's checks (deduped). Pass a specific platform to scope the output.
| Platform | Checks |
|---|---|
web |
headless Chromium can launch (the bundled CDP surface boots a real browser). |
android |
adb and emulator on PATH, or under $ANDROID_HOME, $ANDROID_SDK_ROOT or a standard SDK install location; Java 17+; embedded native sidecar JAR is real. |
ios |
xcrun on PATH; simctl on PATH. The simulator path drives the native companion with no JVM. |
ios-device |
the ios checks plus devicectl; the macOS usbmuxd socket; a connected, paired device; App Store Connect signing credentials present. |
sanderling version
Print the CLI version.
Flags coming in v0.1.0
--permissionsto pre-set OS-level permissions (for example--permissions location=allow,notifications=deny).
Tracked in the v0.1.0 milestone.