package volumes
 
 import "testing"
 
 func TestContainers(t *testing.T) {
 	v := &Volume{containers: make(map[string]struct{})}
 	id := "1234"
 
 	v.AddContainer(id)
 
 	if v.Containers()[0] != id {
 		t.Fatalf("adding a container ref failed")
 	}
 
 	v.RemoveContainer(id)
 	if len(v.Containers()) != 0 {
 		t.Fatalf("removing container failed")
 	}
 }