func shutdownMachines(manager container.Manager) func(*gc.C) {
return func(c *gc.C) {
instances, err := manager.ListContainers()
c.Assert(err, jc.ErrorIsNil)
for _, instance := range instances {
err := manager.DestroyContainer(instance.Id())
c.Check(err, jc.ErrorIsNil)
}
}
}
func assertNumberOfContainers(c *gc.C, manager container.Manager, count int) {
containers, err := manager.ListContainers()
c.Assert(err, jc.ErrorIsNil)
c.Assert(containers, gc.HasLen, count)
}