diff --git a/stronglift_replacement/workout_app/lib/sandbox/sandbox_run_replay.dart b/stronglift_replacement/workout_app/lib/sandbox/sandbox_run_replay.dart
index 70b42d8..535f035 100644
--- a/stronglift_replacement/workout_app/lib/sandbox/sandbox_run_replay.dart
+++ b/stronglift_replacement/workout_app/lib/sandbox/sandbox_run_replay.dart
@@ -34,7 +34,7 @@ double replaySpeedMps(RunSport sport) => switch (sport) {
 /// Fixes for one lap of a [kLoopLengthM] circle starting at [start], one every
 /// [kFixStepSeconds], 5 m accuracy.
 List<GpsFix> sandboxLoopFixes(DateTime start, RunSport sport) {
-  final radius = kLoopLengthM / (2 * math.pi);
+  const radius = kLoopLengthM / (2 * math.pi);
   final steps = (kLoopLengthM / replaySpeedMps(sport) / kFixStepSeconds)
       .round();
   const metresPerDegree = 111194.9;
diff --git a/stronglift_replacement/workout_app/lib/services/feedback_cues.dart b/stronglift_replacement/workout_app/lib/services/feedback_cues.dart
index 4d7cd0a..204e34a 100644
--- a/stronglift_replacement/workout_app/lib/services/feedback_cues.dart
+++ b/stronglift_replacement/workout_app/lib/services/feedback_cues.dart
@@ -6,6 +6,7 @@ import 'dart:async';
 import 'package:audioplayers/audioplayers.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
+import 'package:vibration/vibration.dart';
 import 'package:workout_app/sandbox/sandbox_log.dart';
 import 'package:workout_app/services/storage_service.dart';
 
@@ -54,4 +55,25 @@ class FeedbackCues {
       debugPrint('WorkoutApp: finish chime failed to play ($error).');
     });
   }
+
+  /// A whole kilometre of a run was just credited: a double buzz and, if
+  /// allowed, the chime.
+  ///
+  /// The vibration plugin rather than [HapticFeedback]: a run happens with the
+  /// screen off in a pocket, where view haptics may not fire.
+  Future<void> kilometreReached(int km) async {
+    SandboxLog.event('cue kilometre', {'km': km, 'sound': soundOn});
+    if (await Vibration.hasVibrator()) {
+      // Android/iOS-only: hasVibrator() is false on the Linux test host.
+      // coverage:ignore-start
+      unawaited(Vibration.vibrate(pattern: [0, 150, 100, 150]));
+      // coverage:ignore-end
+    }
+    if (!soundOn) return;
+    await _player.play(AssetSource('sounds/workout_done.wav')).catchError((
+      Object error,
+    ) {
+      debugPrint('WorkoutApp: kilometre chime failed to play ($error).');
+    });
+  }
 }
diff --git a/stronglift_replacement/workout_app/lib/services/foreground_run_client.dart b/stronglift_replacement/workout_app/lib/services/foreground_run_client.dart
new file mode 100644
index 0000000..2fc2e33
--- /dev/null
+++ b/stronglift_replacement/workout_app/lib/services/foreground_run_client.dart
@@ -0,0 +1,54 @@
+/// The run screen's side of the foreground-service conversation.
+library;
+
+/// What the foreground service did when a recording asked for it.
+enum RunServiceState {
+  /// Not started yet (or stopped).
+  none,
+
+  /// Running with its notification visible.
+  running,
+
+  /// Running, but the user denied notifications so nothing is on screen.
+  runningHidden,
+
+  /// The platform refused to start it: GPS may stop with the screen off.
+  failed,
+
+  /// This platform has no foreground services (Linux desktop, tests).
+  unsupported,
+}
+
+/// Starting, feeding and stopping the recording's foreground service.
+///
+/// The GPS stream itself stays in the UI isolate (the recorder writes to the
+/// database, which only that isolate may do); the service holds the process,
+/// the wake lock and the notification so the stream keeps flowing with the
+/// screen off. An interface so the controller is testable without Android,
+/// and so the one file that touches `flutter_foreground_task` stays small.
+abstract class ForegroundRunClient {
+  /// False on platforms with no foreground service.
+  bool get isSupported;
+
+  /// True when the app may post notifications.
+  Future<bool> hasNotificationPermission();
+
+  /// Asks for notification permission, returning whether it was granted.
+  Future<bool> requestNotificationPermission();
+
+  /// Starts the service showing [title] and [text]. [withLocation] adds the
+  /// `location` service type, which Android 14 only allows once the location
+  /// permission is held (the sandbox's replayed GPS has none, so it asks for
+  /// the data-sync type alone).
+  Future<bool> start({
+    required bool withLocation,
+    required String title,
+    required String text,
+  });
+
+  /// Redraws the notification.
+  Future<void> update({required String title, required String text});
+
+  /// Stops the service and removes its notification.
+  Future<void> stop();
+}
diff --git a/stronglift_replacement/workout_app/lib/services/foreground_run_client_flutter.dart b/stronglift_replacement/workout_app/lib/services/foreground_run_client_flutter.dart
new file mode 100644
index 0000000..056be68
--- /dev/null
+++ b/stronglift_replacement/workout_app/lib/services/foreground_run_client_flutter.dart
@@ -0,0 +1,116 @@
+/// The real run foreground-service client, and the service's entry point.
+library;
+
+import 'dart:io' show Platform;
+
+import 'package:flutter_foreground_task/flutter_foreground_task.dart';
+import 'package:workout_app/services/foreground_run_client.dart';
+
+/// Channel the ongoing run notification lives on.
+///
+/// Low importance (it is on screen for the whole run and must never buzz) and
+/// versioned for the same reason as the workout one: channel settings freeze
+/// on first creation. The name is a symbol, not a word (textgate): Android
+/// shows it in system settings.
+const kRunOngoingChannelId = 'run_ongoing_v1';
+
+// coverage:ignore-start
+/// Entry point the plugin calls in the background isolate.
+///
+/// The handler does nothing: the recorder lives in the UI isolate. The
+/// service exists to keep that isolate's process alive, to hold the wake lock
+/// and to own the notification.
+@pragma('vm:entry-point')
+void runServiceStartCallback() {
+  FlutterForegroundTask.setTaskHandler(_RunServiceTaskHandler());
+}
+
+class _RunServiceTaskHandler extends TaskHandler {
+  @override
+  Future<void> onStart(DateTime timestamp, TaskStarter starter) async {}
+
+  @override
+  void onRepeatEvent(DateTime timestamp) {}
+
+  @override
+  void onNotificationPressed() => FlutterForegroundTask.launchApp();
+
+  @override
+  Future<void> onDestroy(DateTime timestamp, bool isTimeout) async {}
+}
+// coverage:ignore-end
+
+/// The real [ForegroundRunClient], driving `flutter_foreground_task`.
+class FlutterForegroundRunClient implements ForegroundRunClient {
+  /// Creates a client. Cheap: nothing happens until [start].
+  FlutterForegroundRunClient();
+
+  @override
+  bool get isSupported => Platform.isAndroid;
+
+  // Platform-channel passthroughs. `flutter test` runs on Linux, where
+  // isSupported is false and none of this is reachable; the decisions that
+  // lead here live in run_controller.dart, covered against a fake.
+  // coverage:ignore-start
+
+  @override
+  Future<bool> hasNotificationPermission() async =>
+      await FlutterForegroundTask.checkNotificationPermission() ==
+      NotificationPermission.granted;
+
+  @override
+  Future<bool> requestNotificationPermission() async =>
+      await FlutterForegroundTask.requestNotificationPermission() ==
+      NotificationPermission.granted;
+
+  @override
+  Future<bool> start({
+    required bool withLocation,
+    required String title,
+    required String text,
+  }) async {
+    FlutterForegroundTask.init(
+      androidNotificationOptions: AndroidNotificationOptions(
+        channelId: kRunOngoingChannelId,
+        channelName: '\u{1F3C3}',
+        onlyAlertOnce: true,
+      ),
+      iosNotificationOptions: const IOSNotificationOptions(),
+      foregroundTaskOptions: ForegroundTaskOptions(
+        eventAction: ForegroundTaskEventAction.nothing(),
+        // allowWakeLock stays at its default (true): it is why GPS fixes keep
+        // arriving with the screen off.
+      ),
+    );
+    if (await FlutterForegroundTask.isRunningService) {
+      await FlutterForegroundTask.stopService();
+    }
+    final result = await FlutterForegroundTask.startService(
+      serviceTypes: [
+        ForegroundServiceTypes.dataSync,
+        if (withLocation) ForegroundServiceTypes.location,
+      ],
+      notificationTitle: title,
+      notificationText: text,
+      callback: runServiceStartCallback,
+    );
+    return result is ServiceRequestSuccess;
+  }
+
+  @override
+  Future<void> update({required String title, required String text}) async {
+    await FlutterForegroundTask.updateService(
+      notificationTitle: title,
+      notificationText: text,
+    );
+  }
+
+  @override
+  Future<void> stop() async {
+    if (await FlutterForegroundTask.isRunningService) {
+      await FlutterForegroundTask.stopService();
+    }
+  }
+
+  // coverage:ignore-end
+}
diff --git a/stronglift_replacement/workout_app/lib/services/run_controller.dart b/stronglift_replacement/workout_app/lib/services/run_controller.dart
new file mode 100644
index 0000000..bed2a45
--- /dev/null
+++ b/stronglift_replacement/workout_app/lib/services/run_controller.dart
@@ -0,0 +1,167 @@
+/// Wires one recording to the phone: permission, foreground service, cues,
+/// notification and the save at the end.
+library;
+
+import 'dart:async';
+import 'dart:developer';
+
+import 'package:flutter/foundation.dart';
+import 'package:workout_app/models/run_track.dart';
+import 'package:workout_app/sandbox/sandbox.dart';
+import 'package:workout_app/services/feedback_cues.dart';
+import 'package:workout_app/services/foreground_run_client.dart';
+import 'package:workout_app/services/position_source.dart';
+import 'package:workout_app/services/run_format.dart';
+import 'package:workout_app/services/run_recorder.dart';
+import 'package:workout_app/services/run_saver.dart';
+
+/// Owns a [RunRecorder] and everything that must happen around it.
+///
+/// Order matters at the start: location access first (the recorder asks), then
+/// the foreground service (Android 14 refuses a `location` service without
+/// the permission), then the first fix.
+class RunController extends ChangeNotifier {
+  /// Creates a controller; it builds its own [recorder] over [sourceFor].
+  RunController({
+    required PositionSource Function(RunSport sport) sourceFor,
+    required this._service,
+    required this._cues,
+    required this._save,
+  }) {
+    recorder = RunRecorder(sourceFor: sourceFor, onKilometre: _onKilometre)
+      ..addListener(_onRecorderChanged);
+  }
+
+  /// The state machine; the live map reads its points.
+  late final RunRecorder recorder;
+
+  final ForegroundRunClient _service;
+  final FeedbackCues _cues;
+  final Future<RunSaveResult> Function(RunTrack track) _save;
+
+  RunServiceState _serviceState = RunServiceState.none;
+  RunSaveResult? _saved;
+  bool _saving = false;
+  String _lastCopy = '';
+
+  /// Whether the foreground service is up (and with a notification).
+  RunServiceState get serviceState => _serviceState;
+
+  /// What saving the finished run did, once it ran.
+  RunSaveResult? get saved => _saved;
+
+  /// True while the finished run is being written.
+  bool get saving => _saving;
+
+  /// True from start to finish: the screen must not be left meanwhile.
+  bool get active =>
+      recorder.phase == RunPhase.recording || recorder.phase == RunPhase.paused;
+
+  /// Asks for access, starts the service, begins recording.
+  Future<void> start() async {
+    await _cues.load();
+    await recorder.start(afterAccess: _startService);
+  }
+
+  /// Pauses crediting.
+  void pause() => recorder.pause();
+
+  /// Resumes crediting.
+  void resume() => recorder.resume();
+
+  /// Ends the run, stops the service and saves the track.
+  Future<void> finish() async {
+    final track = await recorder.finish();
+    await _stopService();
+    if (track == null) return;
+    unawaited(_cues.workoutFinished());
+    _saving = true;
+    notifyListeners();
+    try {
+      _saved = await _save(track);
+    } on Exception catch (error, stack) {
+      log(
+        'RunController: saving ${track.id} failed ($error) -- the run is '
+        'lost unless it is recorded again.',
+        level: 1000,
+        error: error,
+        stackTrace: stack,
+      );
+      _saved = RunSaveResult(stored: false, reason: 'save failed: $error');
+    }
+    _saving = false;
+    notifyListeners();
+  }
+
+  Future<void> _startService() async {
+    if (!_service.isSupported) {
+      _serviceState = RunServiceState.unsupported;
+      return;
+    }
+    var shown = await _service.hasNotificationPermission();
+    if (!shown) shown = await _service.requestNotificationPermission();
+    if (!shown) {
+      log(
+        'RunController: notification permission denied. The run still '
+        'records, but the status-bar distance and time cannot be shown.',
+        level: 1000,
+      );
+    }
+    final copy = runNotificationCopy(metres: 0, movingSeconds: 0);
+    _lastCopy = '${copy.title}|${copy.body}';
+    final started = await _service.start(
+      withLocation: !Sandbox.enabled,
+      title: copy.title,
+      text: copy.body,
+    );
+    if (!started) {
+      _serviceState = RunServiceState.failed;
+      log(
+        'RunController: the foreground service refused to start. GPS fixes '
+        'may stop when the screen turns off -- keep the app open.',
+        level: 1000,
+      );
+      return;
+    }
+    _serviceState = shown
+        ? RunServiceState.running
+        : RunServiceState.runningHidden;
+  }
+
+  Future<void> _stopService() async {
+    if (_serviceState != RunServiceState.running &&
+        _serviceState != RunServiceState.runningHidden) {
+      return;
+    }
+    await _service.stop();
+    _serviceState = RunServiceState.none;
+    notifyListeners();
+  }
+
+  void _onKilometre(int km) => unawaited(_cues.kilometreReached(km));
+
+  void _onRecorderChanged() {
+    if (_serviceState == RunServiceState.running) {
+      final copy = runNotificationCopy(
+        metres: recorder.distanceM,
+        movingSeconds: recorder.seconds,
+      );
+      // Only when the words changed: an update per fix would redraw twice a
+      // second for nothing.
+      if ('${copy.title}|${copy.body}' != _lastCopy) {
+        _lastCopy = '${copy.title}|${copy.body}';
+        unawaited(_service.update(title: copy.title, text: copy.body));
+      }
+    }
+    notifyListeners();
+  }
+
+  @override
+  void dispose() {
+    recorder
+      ..removeListener(_onRecorderChanged)
+      ..dispose();
+    if (active) unawaited(_service.stop());
+    super.dispose();
+  }
+}
diff --git a/stronglift_replacement/workout_app/test/fake_run_service.dart b/stronglift_replacement/workout_app/test/fake_run_service.dart
new file mode 100644
index 0000000..df68651
--- /dev/null
+++ b/stronglift_replacement/workout_app/test/fake_run_service.dart
@@ -0,0 +1,73 @@
+/// A recording fake for the run foreground service.
+library;
+
+import 'package:workout_app/services/foreground_run_client.dart';
+
+/// Stands in for `flutter_foreground_task` on the run screen's side.
+class FakeForegroundRunClient implements ForegroundRunClient {
+  /// Creates a fake describing a healthy Android device.
+  FakeForegroundRunClient({
+    this.isSupported = true,
+    this.permissionGranted = true,
+    this.grantOnRequest = true,
+    this.startSucceeds = true,
+    this.onStart,
+  });
+
+  @override
+  bool isSupported;
+
+  /// Whether notifications are already allowed.
+  bool permissionGranted;
+
+  /// Whether asking for them succeeds.
+  bool grantOnRequest;
+
+  /// Whether the service starts.
+  bool startSucceeds;
+
+  /// Runs inside [start], to record what had happened by then.
+  void Function()? onStart;
+
+  /// `withLocation` of each start.
+  final starts = <bool>[];
+
+  /// Notification redraws as `title|text`, the first being the start.
+  final drawn = <String>[];
+
+  /// Calls recorded in order.
+  final calls = <String>[];
+
+  @override
+  Future<bool> hasNotificationPermission() async {
+    calls.add('has');
+    return permissionGranted;
+  }
+
+  @override
+  Future<bool> requestNotificationPermission() async {
+    calls.add('request');
+    return permissionGranted = grantOnRequest;
+  }
+
+  @override
+  Future<bool> start({
+    required bool withLocation,
+    required String title,
+    required String text,
+  }) async {
+    calls.add('start');
+    onStart?.call();
+    starts.add(withLocation);
+    drawn.add('$title|$text');
+    return startSucceeds;
+  }
+
+  @override
+  Future<void> update({required String title, required String text}) async {
+    drawn.add('$title|$text');
+  }
+
+  @override
+  Future<void> stop() async => calls.add('stop');
+}
diff --git a/stronglift_replacement/workout_app/test/services/feedback_cues_km_test.dart b/stronglift_replacement/workout_app/test/services/feedback_cues_km_test.dart
new file mode 100644
index 0000000..4e6cba4
--- /dev/null
+++ b/stronglift_replacement/workout_app/test/services/feedback_cues_km_test.dart
@@ -0,0 +1,29 @@
+// The kilometre cue of a run: a buzz, and the chime unless sound is off.
+import 'package:audioplayers/audioplayers.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:workout_app/services/feedback_cues.dart';
+
+import '../fake_audio_platform.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+  late FakeAudioRecorder audio;
+
+  setUp(() => audio = installFakeAudioPlatform());
+
+  test('chimes with the finish sound', () async {
+    await FeedbackCues(AudioPlayer()).kilometreReached(1);
+    expect(audio.resumedSources.single, contains('workout_done'));
+  });
+
+  test('stays silent when sound is off', () async {
+    await (FeedbackCues(AudioPlayer())..soundOn = false).kilometreReached(2);
+    expect(audio.resumedSources, isEmpty);
+  });
+
+  test('a chime that cannot play is logged, not thrown', () async {
+    audio.failNextPlay = true;
+    await FeedbackCues(AudioPlayer()).kilometreReached(3);
+    expect(audio.resumedSources, isEmpty);
+  });
+}
diff --git a/stronglift_replacement/workout_app/test/services/run_controller_test.dart b/stronglift_replacement/workout_app/test/services/run_controller_test.dart
new file mode 100644
index 0000000..919d6db
--- /dev/null
+++ b/stronglift_replacement/workout_app/test/services/run_controller_test.dart
@@ -0,0 +1,244 @@
+import 'package:audioplayers/audioplayers.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:sqflite_common_ffi/sqflite_ffi.dart';
+import 'package:workout_app/models/run_track.dart';
+import 'package:workout_app/sandbox/sandbox.dart';
+import 'package:workout_app/services/feedback_cues.dart';
+import 'package:workout_app/services/foreground_run_client.dart';
+import 'package:workout_app/services/foreground_run_client_flutter.dart';
+import 'package:workout_app/services/position_source.dart';
+import 'package:workout_app/services/run_controller.dart';
+import 'package:workout_app/services/run_recorder.dart';
+import 'package:workout_app/services/run_saver.dart';
+import 'package:workout_app/services/storage_service.dart';
+
+import '../fake_audio_platform.dart';
+import '../fake_run_service.dart';
+import '../run_test_fixtures.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+  late FakeAudioRecorder audio;
+  late List<RunTrack> saved;
+
+  setUpAll(() {
+    sqfliteFfiInit();
+    databaseFactory = databaseFactoryFfi;
+  });
+
+  setUp(() async {
+    StorageService.resetForTesting();
+    await StorageService.init();
+    audio = installFakeAudioPlatform();
+    saved = [];
+  });
+
+  tearDown(() => Sandbox.enabled = false);
+
+  RunController build(
+    ManualPositionSource source,
+    FakeForegroundRunClient service, {
+    Future<RunSaveResult> Function(RunTrack)? save,
+  }) => RunController(
+    sourceFor: (_) => source,
+    service: service,
+    cues: FeedbackCues(AudioPlayer()),
+    save:
+        save ??
+        (track) async {
+          saved.add(track);
+          return const RunSaveResult(stored: true, reason: 'saved');
+        },
+  );
+
+  Future<void> feed(ManualPositionSource source, List<int> northM) async {
+    for (final (i, m) in northM.indexed) {
+      source.controller.add(fixAt(i * 2, m.toDouble()));
+    }
+    await pumpEventQueue();
+  }
+
+  test('starts the service after access and before the first fix', () async {
+    final source = ManualPositionSource();
+    var subscribedAtStart = -1;
+    final service = FakeForegroundRunClient(
+      onStart: () => subscribedAtStart = source.subscriptions,
+    );
+    final controller = build(source, service);
+
+    await controller.start();
+
+    expect(subscribedAtStart, 0);
+    expect(source.subscriptions, 1);
+    expect(service.starts, [true]);
+    expect(controller.serviceState, RunServiceState.running);
+    expect(service.calls, ['has', 'start']);
+    expect(service.drawn.single, '0.00|0:00  --:--');
+    expect(controller.active, isTrue);
+    controller.dispose();
+  });
+
+  test('the notification follows the run, redrawing only on change', () async {
+    final source = ManualPositionSource();
+    final service = FakeForegroundRunClient();
+    final controller = build(source, service);
+    await controller.start();
+
+    await feed(source, [0, 6, 12, 18, 24, 30, 36]);
+
+    expect(service.drawn.last, '0.04|0:12  5:33');
+    expect(service.drawn.toSet(), hasLength(service.drawn.length));
+    controller.dispose();
+  });
+
+  test('a refused permission never reaches the service', () async {
+    final service = FakeForegroundRunClient();
+    final controller = build(
+      ManualPositionSource(access: LocationAccess.deniedForever),
+      service,
+    );
+    await controller.start();
+    expect(service.calls, isEmpty);
+    expect(controller.serviceState, RunServiceState.none);
+    expect(controller.recorder.issue, RunIssue.deniedForever);
+    expect(controller.active, isFalse);
+    controller.dispose();
+  });
+
+  test('denied notifications still record but draw nothing', () async {
+    final source = ManualPositionSource();
+    final service = FakeForegroundRunClient(
+      permissionGranted: false,
+      grantOnRequest: false,
+    );
+    final controller = build(source, service);
+    await controller.start();
+    await feed(source, [0, 6, 12]);
+
+    expect(service.calls, ['has', 'request', 'start']);
+    expect(controller.serviceState, RunServiceState.runningHidden);
+    expect(service.drawn, hasLength(1));
+    expect(controller.recorder.livePoints.value, hasLength(3));
+    controller.dispose();
+  });
+
+  test('a service that will not start is flagged, the run goes on', () async {
+    final source = ManualPositionSource();
+    final controller = build(
+      source,
+      FakeForegroundRunClient(startSucceeds: false),
+    );
+    await controller.start();
+    await feed(source, [0, 6]);
+    expect(controller.serviceState, RunServiceState.failed);
+    expect(controller.recorder.phase, RunPhase.recording);
+    expect(controller.recorder.livePoints.value, hasLength(2));
+    await controller.finish();
+    expect(controller.serviceState, RunServiceState.failed);
+    controller.dispose();
+  });
+
+  test('a platform without services records without one', () async {
+    final source = ManualPositionSource();
+    final service = FakeForegroundRunClient(isSupported: false);
+    final controller = build(source, service);
+    await controller.start();
+    await feed(source, [0, 6]);
+    await controller.finish();
+    expect(controller.serviceState, RunServiceState.unsupported);
+    expect(service.calls, isEmpty);
+    expect(saved, hasLength(1));
+    controller.dispose();
+  });
+
+  test('the sandbox asks for the data-sync service type alone', () async {
+    Sandbox.enabled = true;
+    final service = FakeForegroundRunClient();
+    final controller = build(ManualPositionSource(), service);
+    await controller.start();
+    expect(service.starts, [false]);
+    controller.dispose();
+  });
+
+  test('a kilometre buzzes and chimes once', () async {
+    final source = ManualPositionSource();
+    final controller = build(source, FakeForegroundRunClient());
+    await controller.start();
+
+    await feed(source, [for (var i = 0; i <= 170; i++) i * 6]);
+    await Future<void>.delayed(const Duration(milliseconds: 50));
+
+    expect(controller.recorder.distanceM, greaterThan(1000));
+    expect(
+      audio.resumedSources.where((s) => s.contains('workout_done')),
+      hasLength(1),
+    );
+    controller.dispose();
+  });
+
+  test('finish stops the service, saves the track and reports it', () async {
+    final source = ManualPositionSource();
+    final service = FakeForegroundRunClient();
+    final controller = build(source, service);
+    await controller.start();
+    await feed(source, [0, 6, 12, 18]);
+    controller
+      ..pause()
+      ..resume();
+
+    final notified = <bool>[];
+    controller.addListener(() => notified.add(controller.saving));
+    await controller.finish();
+
+    expect(service.calls.last, 'stop');
+    expect(controller.serviceState, RunServiceState.none);
+    expect(saved.single.points, hasLength(4));
+    expect(controller.saved!.stored, isTrue);
+    expect(controller.saving, isFalse);
+    expect(notified, contains(true));
+    expect(controller.active, isFalse);
+    controller.dispose();
+  });
+
+  test('a run too short to save is not saved', () async {
+    final source = ManualPositionSource();
+    final service = FakeForegroundRunClient();
+    final controller = build(source, service);
+    await controller.start();
+    await controller.finish();
+    expect(saved, isEmpty);
+    expect(controller.saved, isNull);
+    expect(controller.recorder.issue, RunIssue.tooShort);
+    expect(service.calls.last, 'stop');
+    controller.dispose();
+  });
+
+  test('a failing save is reported, not thrown', () async {
+    final source = ManualPositionSource();
+    final controller = build(
+      source,
+      FakeForegroundRunClient(),
+      save: (_) async => throw Exception('disk full'),
+    );
+    await controller.start();
+    await feed(source, [0, 6]);
+    await controller.finish();
+    expect(controller.saved!.stored, isFalse);
+    expect(controller.saved!.reason, contains('disk full'));
+    controller.dispose();
+  });
+
+  test('leaving mid-run stops the service', () async {
+    final source = ManualPositionSource();
+    final service = FakeForegroundRunClient();
+    final controller = build(source, service);
+    await controller.start();
+    controller.dispose();
+    expect(service.calls.last, 'stop');
+  });
+
+  test('the real client is unsupported off Android', () {
+    expect(FlutterForegroundRunClient().isSupported, isFalse);
+    expect(kRunOngoingChannelId, endsWith('_v1'));
+  });
+}