HibernateDocumentRepositoryTests.java

package example.domain.services.hibernate;

import example.domain.Document;
import example.domain.Identity;
import org.junit.Test;
import org.springframework.orm.hibernate3.HibernateOperations;

import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.notNullValue;
import static org.hamcrest.CoreMatchers.sameInstance;
import static org.junit.Assert.assertThat;
import static org.mockito.BDDMockito.given;
import static org.mockito.BDDMockito.mock;
import static org.mockito.BDDMockito.verifyZeroInteractions;

public class HibernateDocumentRepositoryTests {

    @Test
    public void shouldReturnFoundDocument() throws Exception {
        Identity id = new Identity();
        Document doc = new Document(id);

        HibernateOperations hibernate = mock(HibernateOperations.class);
        given(hibernate.get(Document.class, id)).willReturn(doc);

        HibernateDocumentRepository repository = new HibernateDocumentRepository(hibernate);

        assertThat(repository.get(id), sameInstance(doc));
    }

    @Test
    public void shouldCreateDocumentWhenCannotFindDocumentInDatabase() throws Exception {
        Identity id = new Identity();

        HibernateDocumentRepository repository = new HibernateDocumentRepository(mock(HibernateOperations.class));
        Document document = repository.get(id);

        assertThat(document, notNullValue());
        assertThat(document.getIdentity(), is(id));
    }

    @Test
    public void shouldNotAttemptToRetrieveDocumentFromDatabaseForNewIdentity() throws Exception {
        HibernateOperations hibernate = mock(HibernateOperations.class);

        HibernateDocumentRepository repository = new HibernateDocumentRepository(hibernate);
        Document document = repository.get(Identity.NEW);

        assertThat(document, notNullValue());
        assertThat(document.getIdentity(), is(Identity.NEW));

        verifyZeroInteractions(hibernate);
    }
}