Unit tests added

test/test_utils/test_utils.dart

@@ -0,0 +1,8 @@
+import 'dart:convert';
+
+import 'package:flutter/services.dart';
+
+Future<Map<String, dynamic>> readJson(String filePath) async {
+  final String response = await rootBundle.loadString('$filePath.json');
+  return await json.decode(response);
+}