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UnitOfWorkGetReferenceTest.java
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UnitOfWorkGetReferenceTest.java
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package cz.cvut.kbss.jopa.sessions;
import cz.cvut.kbss.jopa.environment.OWLClassA;
import cz.cvut.kbss.jopa.environment.OWLClassD;
import cz.cvut.kbss.jopa.environment.OWLClassL;
import cz.cvut.kbss.jopa.exceptions.OWLEntityExistsException;
import cz.cvut.kbss.jopa.model.EntityManagerImpl;
import cz.cvut.kbss.jopa.model.LoadState;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.*;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
public class UnitOfWorkGetReferenceTest extends UnitOfWorkTestBase {
@BeforeEach
protected void setUp() throws Exception {
super.setUp();
}
@Test
void getReferenceReturnsExistingCloneWhenItIsAlreadyManaged() {
final OWLClassA existing = (OWLClassA) uow.registerExistingObject(entityA, descriptor);
final OWLClassA result = uow.getReference(OWLClassA.class, entityA.getUri(), descriptor);
assertNotNull(result);
assertSame(existing, result);
}
@Test
void getReferenceReturnsExistingNewlyRegisteredObject() {
uow.registerNewObject(entityA, descriptor);
final OWLClassA result = uow.getReference(OWLClassA.class, entityA.getUri(), descriptor);
assertNotNull(result);
assertSame(entityA, result);
}
@Test
void getReferenceReturnsNullWhenObjectIsScheduledForDeletion() {
final OWLClassA existing = (OWLClassA) uow.registerExistingObject(entityA, descriptor);
uow.removeObject(existing);
assertNull(uow.getReference(OWLClassA.class, entityA.getUri(), descriptor));
}
@Test
void getReferenceThrowsEntityExistsExceptionWhenIndividualIsAlreadyManagedAsDifferentIncompatibleType() {
uow.registerExistingObject(entityA, descriptor);
assertThrows(OWLEntityExistsException.class,
() -> uow.getReference(OWLClassD.class, entityA.getUri(), descriptor));
}
@Test
void getReferenceLoadsReferenceFromStorageWhenItIsNotManaged() {
final OWLClassA reference = new OWLClassA(entityA.getUri());
when(storageMock.getReference(any(LoadingParameters.class))).thenReturn(reference);
final OWLClassA result = uow.getReference(OWLClassA.class, entityA.getUri(), descriptor);
assertEquals(reference, result);
verify(storageMock).getReference(new LoadingParameters<>(OWLClassA.class, entityA.getUri(), descriptor));
}
@Test
void containsReturnsTrueForInstanceRetrievedUsingGetReference() {
final OWLClassA reference = new OWLClassA(entityA.getUri());
when(storageMock.getReference(any(LoadingParameters.class))).thenReturn(reference);
final OWLClassA result = uow.getReference(OWLClassA.class, entityA.getUri(), descriptor);
assertTrue(uow.contains(result));
}
@Test
void getStateReturnsManagedForInstanceRetrieveUsingGetReference() {
final OWLClassA reference = new OWLClassA(entityA.getUri());
when(storageMock.getReference(any(LoadingParameters.class))).thenReturn(reference);
final OWLClassA result = uow.getReference(OWLClassA.class, entityA.getUri(), descriptor);
assertEquals(EntityManagerImpl.State.MANAGED, uow.getState(result));
assertEquals(EntityManagerImpl.State.MANAGED, uow.getState(result, descriptor));
}
@Test
void removeOfInstanceRetrievedUsingGetReferenceSchedulesItForDeletion() {
final OWLClassA reference = new OWLClassA(entityA.getUri());
when(storageMock.getReference(any(LoadingParameters.class))).thenReturn(reference);
final OWLClassA result = uow.getReference(OWLClassA.class, entityA.getUri(), descriptor);
assertTrue(uow.contains(result));
uow.removeObject(result);
assertFalse(uow.contains(result));
assertEquals(EntityManagerImpl.State.REMOVED, uow.getState(result));
verify(storageMock).remove(entityA.getUri(), OWLClassA.class, descriptor);
}
@Test
void loadEntityFieldLoadsValueOfAttributeOfInstanceRetrievedUsingGetReference() throws Exception {
final OWLClassL reference = new OWLClassL(entityL.getUri());
when(storageMock.getReference(any(LoadingParameters.class))).thenReturn(reference);
final OWLClassL result = uow.getReference(OWLClassL.class, entityL.getUri(), descriptor);
uow.loadEntityField(result, OWLClassL.getSetField());
verify(storageMock).loadFieldValue(result, OWLClassL.getSetField(), descriptor);
assertEquals(LoadState.LOADED, uow.isLoaded(result, OWLClassL.getSetField().getName()));
}
@Test
void loadEntityFieldDoesNothingWhenLazilyLoadedAttributeOfInstanceRetrievedUsingGetReferenceIsAlreadyLoaded()
throws Exception {
final OWLClassL reference = new OWLClassL(entityL.getUri());
when(storageMock.getReference(any(LoadingParameters.class))).thenReturn(reference);
final OWLClassL result = uow.getReference(OWLClassL.class, entityL.getUri(), descriptor);
uow.loadEntityField(result, OWLClassL.getSetField());
// Call it twice. Storage should be called only once
uow.loadEntityField(result, OWLClassL.getSetField());
verify(storageMock).loadFieldValue(result, OWLClassL.getSetField(), descriptor);
assertEquals(LoadState.LOADED, uow.isLoaded(result, OWLClassL.getSetField().getName()));
}
}