Add retry test.

Author: natebiggs

dwds/test/expression_evaluator_test.dart

@@ -13,6 +13,7 @@ import 'package:dwds/src/debugging/location.dart';
 import 'package:dwds/src/debugging/skip_list.dart';
 import 'package:dwds/src/services/batched_expression_evaluator.dart';
 import 'package:dwds/src/services/expression_evaluator.dart';
+import 'package:dwds/src/utilities/shared.dart';
 
 import 'package:test/test.dart';
 import 'package:vm_service/vm_service.dart' hide LogRecord;
@@ -36,6 +37,7 @@ void main() async {
 
     late StreamController<DebuggerPausedEvent> pausedController;
     late StreamController<Event> debugEventController;
+    late FakeInspector inspector;
     setUp(() async {
       final assetReader = FakeAssetReader(sourceMap: '');
       final toolConfiguration = TestToolConfiguration.withLoadStrategy(
@@ -64,8 +66,7 @@ void main() async {
         skipLists,
         root,
       );
-      final inspector =
-          FakeInspector(webkitDebugger, fakeIsolate: simpleIsolate);
+      inspector = FakeInspector(webkitDebugger, fakeIsolate: simpleIsolate);
       debugger.updateInspector(inspector);
 
       _evaluator = ExpressionEvaluator(
@@ -192,6 +193,21 @@ void main() async {
         );
       });
 
+      test('retries failed batched expression', () async {
+        safeUnawaited(
+          evaluator.evaluateExpression('2', 'main.dart', 'true', {}),
+        );
+
+        await evaluator.evaluateExpression('2', 'main.dart', 'false', {});
+        expect(inspector.functionsCalled.length, 3);
+        expect(
+          inspector.functionsCalled[0].contains('return [ true, false ];'),
+          true,
+        );
+        expect(inspector.functionsCalled[1].contains('return true;'), true);
+        expect(inspector.functionsCalled[2].contains('return false;'), true);
+      });
+
       test('returns error if closed', () async {
         evaluator.close();
         final result =

dwds/test/fixtures/fakes.dart

@@ -48,6 +48,7 @@ Isolate get simpleIsolate => Isolate(
 
 class FakeInspector implements AppInspector {
   final WebkitDebugger _remoteDebugger;
+  final List<String> functionsCalled = [];
   FakeInspector(this._remoteDebugger, {required this.fakeIsolate});
 
   Isolate fakeIsolate;
@@ -61,8 +62,10 @@ class FakeInspector implements AppInspector {
   Future<RemoteObject> callFunction(
     String function,
     Iterable<String> argumentIds,
-  ) async =>
-      RemoteObject({'type': 'string', 'value': 'true'});
+  ) async {
+    functionsCalled.add(function);
+    return RemoteObject({'type': 'string', 'value': 'true'});
+  }
 
   @override
   Future<void> initialize() async => {};
@@ -473,3 +476,7 @@ final fakeWipResponse = WipResponse({
   'id': 1,
   'result': {'fake': ''},
 });
+
+final fakeFailingWipResponse = WipResponse({
+  'result': 'Error: Bad request',
+});