    # File lib/fog/openstack/requests/compute/get_usage.rb, line 21
            def get_usage(tenant_id, date_start, date_end)
              response        = Excon::Response.new
              response.status = 200
              response.body   = {"tenant_usage"=>
                                  {"total_memory_mb_usage" => 0.0,
                                   "total_vcpus_usage"     => 0.0,
                                   "total_hours"           => 0.0,
                                   "tenant_id"             => tenant_id,
                                   "stop"                  => date_start,
                                   "start"                 => date_end,
                                   "total_local_gb_usage"  => 0.0,
                                   "server_usages" =>[{
                                     "hours"       => 0.0,
                                     "uptime"      => 69180,
                                     "local_gb"    => 0,
                                     "ended_at"    => nil,
                                     "name"        => "test server",
                                     "tenant_id"   => tenant_id,
                                     "vcpus"       => 1,
                                     "memory_mb"   => 512,
                                     "state"       => "active",
                                     "flavor"      => "m1.tiny",
                                     "started_at"  => "2012-03-05 09:11:44"
                                      }
                                    ]
                                  }
                                }
            response
          end