How to test the predicate specification

I have a specification

final Join<MovieEntity, MovieOtherTitleEntity> listOtherTitles = root.join(MovieEntity_.otherTitles);
        final List<Predicate> orPredicates =
                Stream.of(title)
                        .map(t -> cb.and(
                                cb.like(cb.upper(listOtherTitles.get(MovieOtherTitleEntity_.title)), "%" + t.toUpperCase() + "%"),
                                cb.equal(listOtherTitles.get(MovieOtherTitleEntity_.status), DataStatus.ACCEPTED)
                                )
                        )
                        .collect(Collectors.toList());

I created a test for this code https://pastebin.com/VZd4c0VM However, during the testing, he throws an error

    org.mockito.exceptions.verification.TooManyActualInvocations: 
criteriaBuilder.upper(null);
Wanted 1 time:
-> at com.jonki.popcorn.core.jpa.specification.MovieSpecsUnitTests.testFindWithAll(MovieSpecsUnitTests.java:101)
But was 2 times. Undesired invocation:
-> at com.jonki.popcorn.core.jpa.specification.MovieSpecs.lambda$getFindPredicate$0(MovieSpecs.java:76)


at com.jonki.popcorn.core.jpa.specification.MovieSpecsUnitTests.testFindWithAll(MovieSpecsUnitTests.java:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

The point is that the MovieEntity entity has a list of Entities MovieOtherTitlee. Each MovieOtherTitlee has a Title and Status field by which the MovieEntity entity object is searched. I want to write UnitTest for this code, but I have a problem because it is quite complicated.