[in_app_purchase] Added serviceTimeout code (flutter#3287)

Author: impure

packages/in_app_purchase/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.3.5
+
+* [Android] Fixed: added support for the SERVICE_TIMEOUT (-3) response code.
+
 ## 0.3.4+18
 
 * Fix outdated links across a number of markdown files ([#3276](https://github.com/flutter/plugins/pull/3276))

packages/in_app_purchase/lib/src/billing_client_wrappers/billing_client_wrapper.dart

@@ -314,6 +314,11 @@ enum BillingResponse {
   // WARNING: Changes to this class need to be reflected in our generated code.
   // Run `flutter packages pub run build_runner watch` to rebuild and watch for
   // further changes.
+
+  /// The request has reached the maximum timeout before Google Play responds.
+  @JsonValue(-3)
+  serviceTimeout,
+
   /// The requested feature is not supported by Play Store on the current device.
   @JsonValue(-2)
   featureNotSupported,

packages/in_app_purchase/lib/src/billing_client_wrappers/enum_converters.g.dart

@@ -1,7 +1,7 @@
 name: in_app_purchase
 description: A Flutter plugin for in-app purchases. Exposes APIs for making in-app purchases through the App Store and Google Play.
 homepage: https://github.com/flutter/plugins/tree/master/packages/in_app_purchase
-version: 0.3.4+18
+version: 0.3.5
 
 dependencies:
   async: ^2.0.8

packages/in_app_purchase/pubspec.yaml

@@ -39,6 +39,24 @@ void main() {
     });
   });
 
+  // Make sure that the enum values are supported and that the converter call
+  // does not fail
+  test('response states', () async {
+    BillingResponseConverter converter = BillingResponseConverter();
+    converter.fromJson(-3);
+    converter.fromJson(-2);
+    converter.fromJson(-1);
+    converter.fromJson(0);
+    converter.fromJson(1);
+    converter.fromJson(2);
+    converter.fromJson(3);
+    converter.fromJson(4);
+    converter.fromJson(5);
+    converter.fromJson(6);
+    converter.fromJson(7);
+    converter.fromJson(8);
+  });
+
   group('startConnection', () {
     final String methodName =
         'BillingClient#startConnection(BillingClientStateListener)';