org.opentest4j.AssertionFailedError: expected: not <null>
at org.junit.jupiter.api.AssertionFailureBuilder.build(AssertionFailureBuilder.java:152)
at org.junit.jupiter.api.AssertionFailureBuilder.buildAndThrow(AssertionFailureBuilder.java:132)
at org.junit.jupiter.api.AssertNotNull.failNull(AssertNotNull.java:49)
at org.junit.jupiter.api.AssertNotNull.assertNotNull(AssertNotNull.java:35)
at org.junit.jupiter.api.AssertNotNull.assertNotNull(AssertNotNull.java:30)
at org.junit.jupiter.api.Assertions.assertNotNull(Assertions.java:304)
at cz.cvut.kbss.jopa.test.integration.ReadOnlyEntityManagerCacheTest.lambda$findResultIsDeepClonedIfItIsAlreadyCached$11(ReadOnlyEntityManagerCacheTest.java:223)
at java.base/java.lang.Iterable.forEach(Iterable.java:75)
at cz.cvut.kbss.jopa.test.integration.ReadOnlyEntityManagerCacheTest.findResultIsDeepClonedIfItIsAlreadyCached(ReadOnlyEntityManagerCacheTest.java:221)
at java.base/java.lang.reflect.Method.invoke(Method.java:569)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)