func newInterfaceAllocation(t *testing.T, input engine.Env) (output engine.Env) { eng := engine.New() eng.Logging = false done := make(chan bool) // set IPv6 global if given if input.Exists("globalIPv6Network") { _, globalIPv6Network, _ = net.ParseCIDR(input.Get("globalIPv6Network")) } job := eng.Job("allocate_interface", "container_id") job.Env().Init(&input) reader, _ := job.Stdout.AddPipe() go func() { output.Decode(reader) done <- true }() res := Allocate(job) job.Stdout.Close() <-done if input.Exists("expectFail") && input.GetBool("expectFail") { if res == engine.StatusOK { t.Fatal("Doesn't fail to allocate network interface") } } else { if res != engine.StatusOK { t.Fatal("Failed to allocate network interface") } } if input.Exists("globalIPv6Network") { // check for bug #11427 _, subnet, _ := net.ParseCIDR(input.Get("globalIPv6Network")) if globalIPv6Network.IP.String() != subnet.IP.String() { t.Fatal("globalIPv6Network was modified during allocation") } // clean up IPv6 global globalIPv6Network = nil } return }