unit testing - Mockito - Null Pointer Exception -

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i have stupidly simple class (right now) takes id , passes along dao.

@service public class adhocreportserviceimpl {      @autowired     private adhocreportserviceimpl adhocreportdao;      public list<adhocreportresponsedto> getadhocreportresults(string reportid) {         return adhocreportdao.getadhocreportresults(reportid);     } }

and i'm attempting use mockito verify logic there (this app has no code coverage , i'm trying change bit)

@runwith(mockitojunitrunner.class) public class adhocreportservicetest {  @injectmocks private adhocreportserviceimpl adhocreportserviceimpl = new adhocreportserviceimpl();  @mock private adhocreportdao adhocreportdao;  @test public void getadhocreportresultstest() {     list<adhocreportresponsedto> adhocreportresponsedtolist = new arraylist<adhocreportresponsedto>();     adhocreportresponsedto adhocreportresponsedto1 = new adhocreportresponsedto();     adhocreportresponsedto adhocreportresponsedto2 = new adhocreportresponsedto();      adhocreportresponsedtolist.add(adhocreportresponsedto1);     adhocreportresponsedtolist.add(adhocreportresponsedto2);      when(adhocreportdao.getadhocreportresults(anystring())).thenreturn(adhocreportresponsedtolist);     adhocreportserviceimpl.getadhocreportresults("anystring()"); } }

mockito saying i'm getting getting null pointer exception @ adhocreportdao. when go debug sure enough dao null in class that's being tested i'm not sure have done wrong , mockito documentation doesn't seem helping me out. thoughts?

your @autowired field of type adhockreportserviceimpl; if want injected using @injectmocks you'll need make adhocreportdao in test.

whether or not root cause, 1 of reasons @injectmocks fragile , should prefer explicit setter or constructor testing.


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