def METHOD_NAME(self):
    super(MappingTestCase, self).METHOD_NAME()
    self.mappings = []
    for i in range(10):
        self.mappings.append(
            Mapping.objects.create(
                relation_type="crossdb",
                source_db="SRC",
                source_id="FT{}".format(i),
                source_species="Mus musculus",
                target_db="TGT",
                target_id="ANOTHER{}".format(i),
                target_species="Mus musculus",
            )
        )