@Test
public void test_get_parameter_value_as_string_not_null() throws Exception{

    when(dataObjectService.find(Matchers.argThat(new ClassOrSubclassMatcher<ParameterBo>(
            ParameterBo.class)), any(QueryByCriteria.class))).thenReturn(bo);
    assertEquals(parameter.getValue(), getParameterRepositoryService().getParameterValueAsString(key));
    verify(dataObjectService, times(1)).find(Matchers.argThat(new ClassOrSubclassMatcher<ParameterBo>(
            ParameterBo.class)), any(QueryByCriteria.class));
}