Assertion Error While Testing the Pipeline Apache Beam-CodePudding

While testing the pipeline I got this error even the error log shows that the objects are equal:

    public void testGenerateUserPageViews() throws Exception{
        final PCollection<SessionModel> input = p.apply(Create.of(SESSION_MODEL));
        final PCollection<UserPageViews> output = input.apply(ParDo.of(new GenerateUserPageViews()));
        PAssert.that(output).containsInAnyOrder(USER_PAGEVIEWS);
        p.run().waitUntilFinish();
    }


java.lang.AssertionError: ParDo(GenerateUserPageViews)/ParMultiDo(GenerateUserPageViews).output: 
Expected: iterable over [<com.userprofile.models.UserPageViews@e1688b19>] in any order
     but: Not matched: <com.userprofile.models.UserPageViews@e1688b19>

    at org.apache.beam.sdk.testing.PAssert$PAssertionSite.capture(PAssert.java:174)
    at org.apache.beam.sdk.testing.PAssert.that(PAssert.java:416)
    at org.apache.beam.sdk.testing.PAssert.that(PAssert.java:408)
    at

CodePudding user response：

I would guess that com.userprofile.models.UserPageViews does not have a fully implemented equals or hashCode method.

CodePudding user response：

The solution is that I replace String variable with "" value in place of null. But I still don't understand why the object reference are the same in both cases.