@Test
public void testExceptionIsThrownIfMultipleDescriptorsForSpecifiedUnitNameAreFound() throws Exception {

    // GIVEN
    // EXPECT
    expectedException.expect(JpaUnitException.class);
    // WHEN
    JpaUnitContext.getInstance(ClassWithPersistenceContextWithMultipleDescriptors.class);
    // THEN
    // JpaUnitException is thrown
}