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DetachedInstanceMergerTest.java
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DetachedInstanceMergerTest.java
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/**
* Copyright (C) 2020 Czech Technical University in Prague
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details. You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
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.utils.Generators;
import cz.cvut.kbss.jopa.environment.utils.MetamodelMocks;
import cz.cvut.kbss.jopa.model.MetamodelImpl;
import cz.cvut.kbss.jopa.model.descriptors.Descriptor;
import cz.cvut.kbss.jopa.model.descriptors.EntityDescriptor;
import cz.cvut.kbss.jopa.sessions.change.ChangeRecordImpl;
import cz.cvut.kbss.jopa.sessions.change.ObjectChangeSetImpl;
import org.junit.Before;
import org.junit.Test;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import java.util.HashSet;
import static org.junit.Assert.*;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
public class DetachedInstanceMergerTest {
private Descriptor descriptor;
@Mock
private UnitOfWorkImpl uow;
@Mock
private MetamodelImpl metamodel;
private MetamodelMocks metamodelMocks;
private DetachedInstanceMerger merger;
@Before
public void setUp() throws Exception {
MockitoAnnotations.initMocks(this);
this.metamodelMocks = new MetamodelMocks();
metamodelMocks.setMocks(metamodel);
when(uow.getMetamodel()).thenReturn(metamodel);
this.descriptor = new EntityDescriptor();
this.merger = new DetachedInstanceMerger(uow);
}
@Test
public void mergeFromDetachedAssignsValuesOfNonManagedTypes() throws Exception {
final OWLClassA original = Generators.generateOwlClassAInstance();
final OWLClassA detached = new OWLClassA(original.getUri());
detached.setTypes(original.getTypes());
final String updatedString = "updatedString";
detached.setStringAttribute(updatedString);
final ObjectChangeSet changeSet = createChangeSet(original, detached);
changeSet.addChangeRecord(new ChangeRecordImpl(metamodelMocks.forOwlClassA().stringAttribute(), updatedString));
final OWLClassA result = (OWLClassA) merger.mergeChangesFromDetachedToManagedInstance(changeSet, descriptor);
assertEquals(updatedString, result.getStringAttribute());
}
@Test
public void mergeFromDetachedSetsValueToNullWhenChangeValueIsNull() throws Exception {
final OWLClassA original = Generators.generateOwlClassAInstance();
final OWLClassA detached = new OWLClassA(original.getUri());
detached.setTypes(original.getTypes());
final ObjectChangeSet changeSet = createChangeSet(original, detached);
changeSet.addChangeRecord(new ChangeRecordImpl(metamodelMocks.forOwlClassA().stringAttribute(), null));
final OWLClassA result = (OWLClassA) merger.mergeChangesFromDetachedToManagedInstance(changeSet, descriptor);
assertNull(result.getStringAttribute());
}
@Test
public void mergeFromDetachedLoadsExistingInstanceCorrespondingToNewValue() throws Exception {
final OWLClassD orig = new OWLClassD(Generators.createIndividualIdentifier());
final OWLClassA origRef = Generators.generateOwlClassAInstance();
orig.setOwlClassA(origRef);
final OWLClassD clone = new OWLClassD(orig.getUri());
final OWLClassA newRef = Generators.generateOwlClassAInstance();
final OWLClassA newRefOrig = new OWLClassA(newRef.getUri());
newRefOrig.setStringAttribute(newRef.getStringAttribute());
newRefOrig.setTypes(new HashSet<>(newRef.getTypes()));
final ObjectChangeSet chSet = createChangeSet(orig, clone);
chSet.addChangeRecord(new ChangeRecordImpl(metamodelMocks.forOwlClassD().owlClassAAtt(), newRef));
when(uow.readObject(OWLClassA.class, newRef.getUri(), descriptor)).thenReturn(newRefOrig);
when(uow.isEntityType(OWLClassA.class)).thenReturn(true);
final OWLClassD result = (OWLClassD) merger.mergeChangesFromDetachedToManagedInstance(chSet, descriptor);
verify(uow).readObject(OWLClassA.class, newRef.getUri(), descriptor);
assertNotNull(result);
assertSame(newRefOrig, result.getOwlClassA());
}
private ObjectChangeSet createChangeSet(Object original, Object clone) {
return new ObjectChangeSetImpl(original, clone, new EntityDescriptor());
}
}