Eugen Paraschiv
104 lines
3.9 KiB
Java
104 lines
3.9 KiB
Java
package com.baeldung.javers;
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import org.javers.common.collections.Lists;
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import org.javers.core.Javers;
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import org.javers.core.JaversBuilder;
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import org.javers.core.diff.Diff;
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import org.javers.core.diff.changetype.NewObject;
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import org.javers.core.diff.changetype.ObjectRemoved;
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import org.javers.core.diff.changetype.ValueChange;
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import org.javers.core.diff.changetype.container.ListChange;
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import org.junit.Test;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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import static org.assertj.core.api.Assertions.assertThat;
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public class JaversUnitTest {
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@Test
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public void givenPersonObject_whenApplyModificationOnIt_thenShouldDetectChange() {
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// given
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Javers javers = JaversBuilder.javers().build();
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Person person = new Person(1, "Michael Program");
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Person personAfterModification = new Person(1, "Michael Java");
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// when
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Diff diff = javers.compare(person, personAfterModification);
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// then
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ValueChange change = diff.getChangesByType(ValueChange.class).get(0);
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assertThat(diff.getChanges()).hasSize(1);
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assertThat(change.getPropertyName()).isEqualTo("name");
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assertThat(change.getLeft()).isEqualTo("Michael Program");
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assertThat(change.getRight()).isEqualTo("Michael Java");
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}
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@Test
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public void givenListOfPersons_whenCompare_ThenShouldDetectChanges() {
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// given
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Javers javers = JaversBuilder.javers().build();
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Person personThatWillBeRemoved = new Person(2, "Thomas Link");
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List<Person> oldList = Lists.asList(new Person(1, "Michael Program"), personThatWillBeRemoved);
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List<Person> newList = Lists.asList(new Person(1, "Michael Not Program"));
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// when
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Diff diff = javers.compareCollections(oldList, newList, Person.class);
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// then
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assertThat(diff.getChanges()).hasSize(3);
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ValueChange valueChange = diff.getChangesByType(ValueChange.class).get(0);
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assertThat(valueChange.getPropertyName()).isEqualTo("name");
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assertThat(valueChange.getLeft()).isEqualTo("Michael Program");
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assertThat(valueChange.getRight()).isEqualTo("Michael Not Program");
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ObjectRemoved objectRemoved = diff.getChangesByType(ObjectRemoved.class).get(0);
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assertThat(objectRemoved.getAffectedObject().get().equals(personThatWillBeRemoved)).isTrue();
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ListChange listChange = diff.getChangesByType(ListChange.class).get(0);
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assertThat(listChange.getValueRemovedChanges().size()).isEqualTo(1);
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}
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@Test
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public void givenListOfPerson_whenPersonHasNewAddress_thenDetectThatChange() {
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// given
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Javers javers = JaversBuilder.javers().build();
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PersonWithAddress person = new PersonWithAddress(1, "Tom", Arrays.asList(new Address("England")));
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PersonWithAddress personWithNewAddress = new PersonWithAddress(1, "Tom", Arrays.asList(new Address("England"), new Address("USA")));
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// when
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Diff diff = javers.compare(person, personWithNewAddress);
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List objectsByChangeType = diff.getObjectsByChangeType(NewObject.class);
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// then
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assertThat(objectsByChangeType).hasSize(1);
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assertThat(objectsByChangeType.get(0).equals(new Address("USA")));
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}
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@Test
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public void givenListOfPerson_whenPersonRemovedAddress_thenDetectThatChange() {
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// given
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Javers javers = JaversBuilder.javers().build();
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PersonWithAddress person = new PersonWithAddress(1, "Tom", Arrays.asList(new Address("England")));
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PersonWithAddress personWithNewAddress = new PersonWithAddress(1, "Tom", Collections.emptyList());
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// when
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Diff diff = javers.compare(person, personWithNewAddress);
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List objectsByChangeType = diff.getObjectsByChangeType(ObjectRemoved.class);
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// then
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assertThat(objectsByChangeType).hasSize(1);
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assertThat(objectsByChangeType.get(0).equals(new Address("England")));
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}
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}
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