func (s *MachineSuite) waitProvisioned(c *gc.C, unit *state.Unit) (*state.Machine, instance.Id) {
c.Logf("waiting for unit %q to be provisioned", unit)
machineId, err := unit.AssignedMachineId()
c.Assert(err, gc.IsNil)
m, err := s.State.Machine(machineId)
c.Assert(err, gc.IsNil)
w := m.Watch()
defer w.Stop()
timeout := time.After(coretesting.LongWait)
for {
select {
case <-timeout:
c.Fatalf("timed out waiting for provisioning")
case _, ok := <-w.Changes():
c.Assert(ok, jc.IsTrue)
err := m.Refresh()
c.Assert(err, gc.IsNil)
if instId, err := m.InstanceId(); err == nil {
c.Logf("unit provisioned with instance %s", instId)
return m, instId
} else {
c.Check(err, jc.Satisfies, state.IsNotProvisionedError)
}
}
}
panic("watcher died")
}
