public void Test_GetDirtyChildren_ReturnAllDirty()
{
//---------------Set up test pack-------------------
OrganisationTestBO organisationTestBO = OrganisationTestBO.CreateSavedOrganisation();
BusinessObjectCollection <ContactPersonTestBO> cpCol;
MultipleRelationship <ContactPersonTestBO> relationship = GetAggregationRelationship(organisationTestBO, out cpCol);
ContactPersonTestBO myBO_delete = ContactPersonTestBO.CreateSavedContactPerson_AsChild(cpCol);
cpCol.MarkForDelete(myBO_delete);
ContactPersonTestBO myBO_Edited = ContactPersonTestBO.CreateSavedContactPerson_AsChild(cpCol);
myBO_Edited.Surname = TestUtil.GetRandomString();
ContactPersonTestBO myBo_Created = ContactPersonTestBO.CreateUnsavedContactPerson_AsChild(cpCol);
ContactPersonTestBO myBo_Removed = ContactPersonTestBO.CreateSavedContactPerson_AsChild(cpCol);
cpCol.Remove(myBo_Removed);
//---------------Execute Test ----------------------
IList <ContactPersonTestBO> dirtyChildren = relationship.GetDirtyChildren();
//---------------Test Result -----------------------
Assert.Contains(myBO_delete, (ICollection)dirtyChildren);
Assert.Contains(myBO_Edited, (ICollection)dirtyChildren);
Assert.Contains(myBo_Created, (ICollection)dirtyChildren);
Assert.Contains(myBo_Removed, (ICollection)dirtyChildren);
Assert.AreEqual(4, dirtyChildren.Count);
}