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package afero
import "testing"
func TestCopyOnWrite(t *testing.T) {
var fs Fs
var err error
base := NewOsFs()
roBase := NewReadOnlyFs(base)
ufs := NewCopyOnWriteFs(roBase, NewMemMapFs())
fs = ufs
err = fs.MkdirAll("nonexistent/directory/", 0744)
if err != nil {
t.Error(err)
return
}
_, err = fs.Create("nonexistent/directory/newfile")
if err != nil {
t.Error(err)
return
}
}
func TestCopyOnWriteFileInMemMapBase(t *testing.T) {
base := &MemMapFs{}
layer := &MemMapFs{}
if err := WriteFile(base, "base.txt", []byte("base"), 0755); err != nil {
t.Fatalf("Failed to write file: %s", err)
}
ufs := NewCopyOnWriteFs(base, layer)
_, err := ufs.Stat("base.txt")
if err != nil {
t.Fatal(err)
}
}
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