java - Can we use TestNG expectedExceptionsMessageRegExp to match the cause text? -


expectedexceptionsmessageregexp trying match detailmessage field. can match cause text? i.e text returned exception.getcause() ? because detailmessage field gives generic message , beat purpose of test case if expected message matched text.

@test(expectedexceptions = testexecutionexception.class, expectedexceptionsmessageregexp = ".* http 422.*") public void test() throws exception {     ..     //some code produces testexecutionexception cause http 422     .. }

the testng error is:

the exception thrown wrong message: expected ".* http 422.*" got "failed executing messageexecutiontask"     @ org.testng.internal.invoker.handleinvocationresults(invoker.java:1481)     @ org.testng.internal.invoker.invokemethod(invoker.java:754)     @ org.testng.internal.invoker.invoketestmethod(invoker.java:901)     @ org.testng.internal.invoker.invoketestmethods(invoker.java:1231)     ... 16 more

testng relies on reflection instantiate test class , invoke @test method. exception @test method trigger java.lang.reflect.invocationtargetexception getcause() results in exception raised @test method.

testng designed query invocationtargetexception.getcause().getmessage() error message of exception raised , try , match using regex supplied via expectedexceptionsmessageregexp attribute of @test annotation.

here's example runs fine testng 6.12

import org.testng.itestresult; import org.testng.annotations.aftermethod; import org.testng.annotations.test;  public class testclass {      @test(expectedexceptions = oldmonkexception.class, expectedexceptionsmessageregexp = ".* http 422.*")     public void test() throws exception {         throw new oldmonkexception("your have triggered http 422 error code.");     }      @aftermethod     public void aftertestmethod(itestresult testresult) {         string mname = testresult.getmethod().getmethodname() + " ";         switch (testresult.getstatus()) {             case itestresult.success:                 mname += "passed";                 break;             case itestresult.failure:                 mname += "failed";                 break;             case itestresult.skip:                 mname += "skipped";                 break;             default:                 mname += "";         }         system.err.println(mname);     }      public static class oldmonkexception extends exception {         oldmonkexception(string message) {             super(message);         }     } }

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