func newStorageProvisioner(c *gc.C, args *workerArgs) worker.Worker {
	if args == nil {
		args = &workerArgs{}
	}
	if args.scope == nil {
		args.scope = coretesting.EnvironmentTag
	}
	if args.volumes == nil {
		args.volumes = newMockVolumeAccessor()
	}
	if args.filesystems == nil {
		args.filesystems = newMockFilesystemAccessor()
	}
	if args.life == nil {
		args.life = &mockLifecycleManager{}
	}
	if args.environ == nil {
		args.environ = newMockEnvironAccessor(c)
	}
	if args.machines == nil {
		args.machines = newMockMachineAccessor(c)
	}
	return storageprovisioner.NewStorageProvisioner(
		args.scope,
		"storage-dir",
		args.volumes,
		args.filesystems,
		args.life,
		args.environ,
		args.machines,
	)
}
func (s *storageProvisionerSuite) TestStartStop(c *gc.C) {
	worker := storageprovisioner.NewStorageProvisioner(
		coretesting.EnvironmentTag,
		"dir",
		newMockVolumeAccessor(),
		newMockFilesystemAccessor(),
		&mockLifecycleManager{},
		newMockEnvironAccessor(c),
		newMockMachineAccessor(c),
	)
	worker.Kill()
	c.Assert(worker.Wait(), gc.IsNil)
}