@Test
public void testGetWorkflowWallClockMinutes() throws RepositoryException, XmlRpcException, IOException {

  List<WorkflowInstance> workflowlist = wmc.getWorkflowInstances();
  assertThat(workflowlist, is(not(nullValue())));
  assertThat(workflowlist.size(), is(not(0)));
  WorkflowInstance instance = wmc.getWorkflowInstanceById(workflowlist.get(0).getId());
  assertThat(instance, is(not(nullValue())));
  double clock = wmc.getWorkflowWallClockMinutes(instance.getId());
  assertThat(clock, is(not(nullValue())));
}