add smoke integration test to verify that failed commands don't crash…

… the automation server

packages/patrol/example/integration_test/common.dart

@@ -6,8 +6,8 @@ export 'package:example/main.dart';
 export 'package:flutter_test/flutter_test.dart';
 export 'package:patrol/patrol.dart';
 
-final _patrolTesterConfig = PatrolTesterConfig();
-final _nativeAutomatorConfig = NativeAutomatorConfig();
+final globalPatrolTesterConfig = PatrolTesterConfig();
+final globalNativeAutomatorConfig = NativeAutomatorConfig();
 
 Future<void> createApp(PatrolTester $) async {
   await setUpTimezone();
@@ -17,12 +17,14 @@ Future<void> createApp(PatrolTester $) async {
 void patrol(
   String description,
   Future<void> Function(PatrolTester) callback, {
+  PatrolTesterConfig? patrolTesterConfig,
+  NativeAutomatorConfig? nativeAutomatorConfig,
   bool? skip,
 }) {
   patrolTest(
     description,
-    config: _patrolTesterConfig,
-    nativeAutomatorConfig: _nativeAutomatorConfig,
+    config: patrolTesterConfig ?? globalPatrolTesterConfig,
+    nativeAutomatorConfig: nativeAutomatorConfig ?? globalNativeAutomatorConfig,
     nativeAutomation: true,
     skip: skip,
     callback,

packages/patrol/example/integration_test/smokes/graceful_fail_test.dart

@@ -0,0 +1,61 @@
+import '../common.dart';
+
+final _nativeAutomatorConfig = globalNativeAutomatorConfig.copyWith(
+  findTimeout: Duration(seconds: 3), // shorter timeout for this test
+);
+
+void main() {
+  patrol(
+    'native tap() fails gracefully',
+    nativeAutomatorConfig: _nativeAutomatorConfig,
+    ($) async {
+      await createApp($);
+
+      await expectLater(
+        () => $.native.tap(Selector(text: 'This does not exist, boom!')),
+        throwsA(
+          isA<PatrolActionException>().having(
+            (err) => err.message,
+            'message',
+            contains('This does not exist, boom!'),
+          ),
+        ),
+      );
+    },
+  );
+
+  patrol(
+    'native enterText() fails gracefully',
+    nativeAutomatorConfig: _nativeAutomatorConfig,
+    ($) async {
+      await createApp($);
+
+      await expectLater(
+        () => $.native.enterText(
+          Selector(text: 'This does not exist, boom!'),
+          text: 'some text',
+        ),
+        throwsA(
+          isA<PatrolActionException>().having(
+            (err) => err.message,
+            'message',
+            contains('This does not exist, boom!'),
+          ),
+        ),
+      );
+    },
+  );
+
+  patrol(
+    'native enterTextByIndex() fails gracefully',
+    nativeAutomatorConfig: _nativeAutomatorConfig,
+    ($) async {
+      await createApp($);
+
+      await expectLater(
+        () => $.native.enterTextByIndex('some text', index: 100),
+        throwsA(isA<PatrolActionException>()),
+      );
+    },
+  );
+}