EDIT

import org.unitils.database.annotations.Transactional;

import org.unitils.database.util.TransactionMode;

import org.unitils.dbunit.annotation.DataSet;

import org.unitils.spring.annotation.SpringBeanByName;

import org.unitils.spring.annotation.SpringBeanByType;

import eu.etaxonomy.cdm.model.name.TaxonName;

import eu.etaxonomy.cdm.model.occurrence.DerivedUnit;

import eu.etaxonomy.cdm.model.occurrence.FieldUnit;

import eu.etaxonomy.cdm.model.occurrence.MediaSpecimen;

import eu.etaxonomy.cdm.model.reference.Reference;

import eu.etaxonomy.cdm.model.reference.ReferenceFactory;

    @Test

    @DataSet("SpecimenTypeDesignationWorkingSetServiceImplTest-deleteTest.xml")

    public void deleteTypeDesignationTest() {

        SpecimenTypeDesignationWorkingSetDTO<Registration> workingset = service.loadDtoByIds(registrationId, 0);

        Assert.assertTrue(workingset.getSpecimenTypeDesignationDTOs().size() == 2);

        SpecimenTypeDesignation std = deleteDTO.asSpecimenTypeDesignation();

        reg.getTypeDesignations().remove(std);

        service.save(workingset);

        workingset = service.loadDtoByIds(registrationId, 0);

        Assert.assertEquals(1, workingset.getSpecimenTypeDesignationDTOs().size());

        Assert.assertEquals("All TypeDesignations should have been deleted", 0, cdmRepository.getNameService().getAllTypeDesignations(10, 0).size());

        Assert.assertEquals("All derived units should have been deleted", 0, cdmRepository.getOccurrenceService().count(DerivedUnit.class));

        Assert.assertEquals("FieldUnit should have been deleted", 0, cdmRepository.getOccurrenceService().count(FieldUnit.class));

        // printDataSetWithNull(System.err, includeTableNames_delete);

    }