func callMaintainInstance(c *gc.C, s patcher, broker environs.InstanceBroker, machineId string) {
err := broker.MaintainInstance(environs.StartInstanceParams{
Constraints: constraints.Value{},
Tools: makePossibleTools(),
InstanceConfig: makeInstanceConfig(c, s, machineId),
StatusCallback: makeNoOpStatusCallback(),
})
c.Assert(err, jc.ErrorIsNil)
}
func assertInstancesStarted(c *gc.C, broker environs.InstanceBroker, results ...*environs.StartInstanceResult) {
allInstances, err := broker.AllInstances()
c.Assert(err, jc.ErrorIsNil)
instancetest.MatchInstances(c, allInstances, instancesFromResults(results...)...)
}