java - How to mock this in an Enum class using jmockt? -

i trying write unit test below old legacy enum class. method trying unit test - tolocalpookstring.

whenever running unit test code, going inside if statement in tolocalpookstring method since this getting resolved corp.

public enum datacenterenum {     corp, phx, slc, lvs;      private static final datacenterenum ourlocation = comparelocation();      private static datacenterenum comparelocation() {         // code here     }      private string tolocalpookstring() {         if (this == corp || !(testutils.getenvironmentname().equalsignorecase("production"))) {             return "/pp/dc/phx";         }          return "/pp/dc/" + name().tolowercase();     }       public static final string beta_pook_string = ourlocation.tolocalpookstring();  } 

is there way can mock this phx or slc or lvs apart corp in tolocalpookstring should not go inside if statement? using jmockit here.

new mockup<testutils>() {     @mock     public string getenvironmentname() {     return "production";     } };  string ss = datacenterenum.beta_pook_string; system.out.println(ss); 

it pretty simple somehow not able understand how it? thoughts?

well, could mock enum, follows:

new mockup<datacenterenum>() {     @mock datacenterenum comparelocation() { return datacenterenum.lvs; } }; 

however, because jvm can perform static initialization once given class/enum, test work if enum hadn't yet been loaded , initialized. so, more robust test following.

@test public void whendatacenterisnotcorpthenlocalpookstringshouldincludeenumname() {     new mockup<testutils>() {         @mock string getenvironmentname() { return "production"; }     };      datacenterenum notcorp = datacenterenum.lvs;     string ss = deencapsulation.invoke(notcorp, "tolocalpookstring");      asserttrue(ss.touppercase().endswith(notcorp.name())); } 

this works, note writing separate tests private methods considered bad form. ideally, tests should call public methods indirectly exercise private ones. in particular case, however, there no such public method, guess it's acceptable.