changed test names

Author: julianlen

rskj-core/src/test/java/co/rsk/peg/federation/FederationSupportImplTest.java

@@ -1284,7 +1284,7 @@ void getRetiringFederationAddress_returnsNull() {
 
         @Test
         @Tag("getRetiringFederationSize")
-        void getRetiringFederationSize_returnsRetiringFederationNonExistentResponseCode() {
+        void getRetiringFederationSize_returnsEmpty() {
             Optional<Integer> retiringFederationSize = federationSupport.getRetiringFederationSize();
             assertTrue(retiringFederationSize.isEmpty());
         }
@@ -1373,7 +1373,7 @@ void getRetiringFederationAddress_returnsNull() {
 
         @Test
         @Tag("getRetiringFederationSize")
-        void getRetiringFederationSize_returnsRetiringFederationNonExistentResponseCode() {
+        void getRetiringFederationSize_returnsEmpty() {
             Optional<Integer> retiringFederationSize = federationSupport.getRetiringFederationSize();
             assertTrue(retiringFederationSize.isEmpty());
         }