@Test
public void postAjaxExecuteFlowWithMissingProjectParameter() throws Exception {

  this.req.addParameter("ajax", "executeFlow");
  try {
    this.executorServlet.handlePost(this.req, this.res, this.session);
    fail("Expected exception was not thrown");
  } catch (final ServletException e) {
    assertEquals("Missing required parameter 'project'.", e.getMessage());
  }
}