func (s *copierSuite) TestEmptyOutput(c *check.C) {
err := s.cp.walkMount("", s.cp.ctrOutputDir, 10, true)
c.Check(err, check.IsNil)
func (s *copierSuite) TestEmptyOutput(c *check.C) {
err := s.cp.walkMount("", s.cp.ctrOutputDir, 10, true)
c.Check(err, check.IsNil)