java - testng suite second test fail -> nullpointerexception -


i have dao tests want execute using testng suite initializing daos in @beforesuite first test can use daos , others tests generate nullpointer when calling dao

any appreciated thank much

base test :

 public class basetest {      protected documentdaoimpl documentdao;     protected userdaoimpl userdao;     @beforesuite   public void beforesuite() {         entitymanagerutil.setpersistenceunitname("db_test"); //initialize entitymanagerfactory once tests daos         documentdao = daofactory.getdocumentdao();         userdao = daofactory.getuserdao();   }    @aftersuite   public void aftersuite() {     entitymanagerutil.closeentitymanagerfactory();   } }

test 1 :

public class documentdaoimpltest extends basetest{      @test(dataproviderclass = documentdataprovider.class, dataprovider = documentdataprovider.one_document_provider)     public void findbymatricule(document document) {         documentdao.create(document);         document result = documentdao.findbymatricule(document.getmatricule());         assert.assertnotnull(result);         assert.assertequals(result.getmatricule(), document.getmatricule());     } }

test 2 :

public class userdaoimpltest extends basetest{      @test(dataproviderclass = userdataprovider.class, dataprovider = userdataprovider.one_user_provider)     public void findbydocumentid(user user) {         // nullpointer userdao         userdao.create(user);         user result = userdao.findbydocumentid(user.getdocumentid());         assert.assertnotnull(result);         assert.assertequals(result.getdocumentid(), user.getdocumentid());     }  }

testng.xml

<test name="daotest">     <packages>         <package name="com.dev.test.dao"/>     </packages>  </test>

stacktrace :

java.lang.nullpointerexception     @ com.dev.test.dao.userdaoimpltest.findbydocumentid(userdaoimpltest.java:14)     @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)     @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:57)     @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43)     @ java.lang.reflect.method.invoke(method.java:606)     @ org.testng.internal.methodinvocationhelper.invokemethod(methodinvocationhelper.java:86)     @ org.testng.internal.invoker.invokemethod(invoker.java:643)     @ org.testng.internal.invoker.invoketestmethod(invoker.java:820)     @ org.testng.internal.invoker.invoketestmethods(invoker.java:1128)     @ org.testng.internal.testmethodworker.invoketestmethods(testmethodworker.java:129)     @ org.testng.internal.testmethodworker.run(testmethodworker.java:112)     @ org.testng.testrunner.privaterun(testrunner.java:782)     @ org.testng.testrunner.run(testrunner.java:632)     @ org.testng.suiterunner.runtest(suiterunner.java:366)     @ org.testng.suiterunner.runsequentially(suiterunner.java:361)     @ org.testng.suiterunner.privaterun(suiterunner.java:319)     @ org.testng.suiterunner.run(suiterunner.java:268)     @ org.testng.suiterunnerworker.runsuite(suiterunnerworker.java:52)     @ org.testng.suiterunnerworker.run(suiterunnerworker.java:86)     @ org.testng.testng.runsuitessequentially(testng.java:1244)     @ org.testng.testng.runsuiteslocally(testng.java:1169)     @ org.testng.testng.run(testng.java:1064)     @ org.testng.remote.abstractremotetestng.run(abstractremotetestng.java:132)     @ org.testng.remote.remotetestng.initandrun(remotetestng.java:236)     @ org.testng.remote.remotetestng.main(remotetestng.java:81)

what doing wrong ? tests works if run independently , fails when run @ once

thank much

you have rework tests:

@beforesuite called once suite. have 2 classes first has dao instanced, other not (npe in case).

one option use static dao. solution put documentdao = daofactory.getdocumentdao(); @beforeclass. can find many other (better) solutions.


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