func TestReadOnly(t *testing.T) {
m := map[string]string{"x": "y"}
rfs := mapfs.New(m)
wfs := rwvfs.ReadOnly(rfs)
if _, err := rfs.Stat("/x"); err != nil {
t.Error(err)
}
_, err := wfs.Create("/y")
if want := (&os.PathError{"create", "/y", rwvfs.ErrReadOnly}); !reflect.DeepEqual(err, want) {
t.Errorf("Create: got err %v, want %v", err, want)
}
err = wfs.Mkdir("/y")
if want := (&os.PathError{"mkdir", "/y", rwvfs.ErrReadOnly}); !reflect.DeepEqual(err, want) {
t.Errorf("Mkdir: got err %v, want %v", err, want)
}
err = wfs.Remove("/y")
if want := (&os.PathError{"remove", "/y", rwvfs.ErrReadOnly}); !reflect.DeepEqual(err, want) {
t.Errorf("Remove: got err %v, want %v", err, want)
}
}
// Map returns a new FileSystem from the provided map. Map keys should be
// forward slash-separated pathnames and not contain a leading slash.
func Map(m map[string]string) FileSystem {
fs := mapFS{
m: m,
dirs: map[string]struct{}{"/": struct{}{}},
mu: new(sync.RWMutex),
FileSystem: mapfs.New(m),
}
// Create initial dirs.
for path := range m {
if err := MkdirAll(fs, filepath.Dir(path)); err != nil {
panic(err.Error())
}
}
return fs
}