unit test and fix for mode switch

Change-Id: I6585adb2857a0ed16ceae605a7f763318c946136
diff --git a/app/src/test/resources/RemoteConfig.json b/app/src/test/resources/RemoteConfig.json
new file mode 100644
index 0000000..50715ff
--- /dev/null
+++ b/app/src/test/resources/RemoteConfig.json
@@ -0,0 +1,10 @@
+{
+  "integration": {
+    "url": "file:src/test/resources",
+    "cache": {
+      "enabled": true,
+      "maxsize": 50,
+      "ttl": "PT1m"
+    }
+  }
+}