diff --git a/test/fake/device_service.dart b/test/fake/device_service.dart
index 911aff66f..82f81f5c3 100644
--- a/test/fake/device_service.dart
+++ b/test/fake/device_service.dart
@@ -5,4 +5,10 @@ import 'package:test/fake.dart';
 class FakeDeviceService extends Fake implements DeviceService {
   @override
   Future<int> getDefaultTimeZoneRawOffsetMillis() => SynchronousFuture(3600000);
+
+  @override
+  Future<int> getAvailableHeapSize() => SynchronousFuture(0x7fffffff);
+
+  @override
+  Future<void> requestGarbageCollection() => SynchronousFuture(null);
 }