Added unit testcase

src/constant.js

@@ -130,7 +130,7 @@ export const CONSTANTS = {
   METHODS_TO_BE_EXCLUDED_ONLY_DEVICES: [],
   PUBSUB_ACK: { pubSubStatus: 'Connection successful' },
   SUBSCRIBE: 'Subscribe',
-  ADDITIONAL_SUBSCRIBE: 'Subscribing additional methods',
+  ADDITIONAL_SUBSCRIBE: 'Subscribing additional method',
   PROVIDER_REGISTRATION: 'provider registered successfully',
   PROVIDER_REGISTRATION_FAILED: 'Provider registeration failed',
   NO_PROVIDER_SPECIFIED: 'No provider has been specified',

test/unit/MethodFilters.test.js

@@ -188,16 +188,23 @@ describe('MethodFilters', () => {
 
   describe('isSubscribeMethod', () => {
     test('should return true if method has Subscribe in it', () => {
-      method = { name: 'Subscribe device.id' };
+      method = { name: 'Subscribing additional method device.id' };
       result = methodFilters.isSubscribeMethod(method);
       expect(result).toBe(true);
     });
+
     test('should return false if method does not have subscribe in it ', () => {
       method = { name: 'account.id' };
       result = methodFilters.isSubscribeMethod(method);
       expect(result).toBe(false);
     });
 
+    test('should return false if method does not have subscribe in it ', () => {
+      method = { name: 'Subscribe to settings' };
+      result = methodFilters.isSubscribeMethod(method);
+      expect(result).toBe(false);
+    });
+
     test('should return false if method has Subscribe but not in the beginning ', () => {
       method = { name: 'account.id Subscribe' };
       result = methodFilters.isSubscribeMethod(method);