Code to serialize/unserialize loaded images

tools/utils/images/serialize_test.go

@@ -0,0 +1,31 @@
+package images
+
+import (
+	"bytes"
+	"fmt"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+	"github.com/kovidgoyal/kitty"
+)
+
+var _ = fmt.Print
+
+func TestImageSerialize(t *testing.T) {
+	img, err := OpenNativeImageFromReader(bytes.NewReader(kitty.KittyLogoAsPNGData))
+	if err != nil {
+		t.Fatal(err)
+	}
+	m, data := img.Serialize()
+	img2, err := ImageFromSerialized(m, data)
+	if err != nil {
+		t.Fatal(err)
+	}
+	m2, data2 := img2.Serialize()
+	if diff := cmp.Diff(m, m2); diff != "" {
+		t.Fatalf("Image metadata failed to roundtrip:\n%s", diff)
+	}
+	if diff := cmp.Diff(data, data2); diff != "" {
+		t.Fatalf("Image data failed to roundtrip:\n%s", diff)
+	}
+}