func ensureChange(c *C, r *state.TaskRunner, sb *stateBackend, chg *state.Change) {
for i := 0; i < 10; i++ {
sb.ensureBefore = time.Hour
r.Ensure()
r.Wait()
chg.State().Lock()
s := chg.Status()
chg.State().Unlock()
if s.Ready() {
return
}
if sb.ensureBefore > 0 {
break
}
}
var statuses []string
chg.State().Lock()
for _, t := range chg.Tasks() {
statuses = append(statuses, t.Summary()+":"+t.Status().String())
}
chg.State().Unlock()
c.Fatalf("Change didn't reach final state without blocking: %s", strings.Join(statuses, " "))
}
