Having trouble getting a Hibernate JUnit test to generate a constraint exception
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I'm using Hibernate 4.0.1.Final with a MySQL 5.5 database.  I'm writing a Java console app.  In a JUnit test, I'm having trouble getting a test to fail.  Here's my models under test …

	@Entity
	@Table(name = "ic_domain")
	public class Domain {

		@Id
		@Column(name = "DOMAIN_ID")
		private String domainId;
	
		@OneToOne(fetch = FetchType.EAGER, targetEntity = Organization.class)
		@JoinColumn(name = "ORGANIZATION_ID")
		private Organization org;

and 

	@Entity
	@Table(name = "ic_organization")
	public class Organization {

		@Id
		@Column(name = "ORGANIZATION_ID")
		private String organizationId;

My problem is, in my JUnit test, I'm trying to create a foreign key that doesn't exist, expecting things to fail upon saving, but they never do.  Here's the JUnit test

	@Test
	public void testSaveDomainWithUnmathcedOrg() { 
		final Organization org = createDummyOrg();
		// Create an org id that doesn't exist.
		org.setOrganizationId("ZZZZ");
		final Domain domain = new Domain();
		final String id = UUID.randomUUID().toString().replace("-", "");
		domain.setDomainId(id);
		domain.setName(org.getName());
		domain.setOrg(org);
		m_domainDao.saveOrUpdate(domain);	
	}	// testSaveDomainWithUnmatchedOrg

The code of the DAO is

	public void saveOrUpdate(final Domain domain) {
		final Session session = sessionFactory.getCurrentSession();
		session.saveOrUpdate(obj);
	}	// saveOrUpdate

Shouldn't things fail at "session.saveOrUpdate"?  How do I make them?  I don't want to commit my data in the JUnit test because I don't want to pollute the underlying database with dummy data, but if that is the only way, so be it.
