storage: working on packing and unpacking

tar/storage/entry_test.go

@@ -0,0 +1,66 @@
+package storage
+
+import (
+	"encoding/json"
+	"sort"
+	"testing"
+)
+
+func TestEntries(t *testing.T) {
+	e := Entries{
+		Entry{
+			Type:     SegmentType,
+			Payload:  []byte("y'all"),
+			Position: 1,
+		},
+		Entry{
+			Type:     SegmentType,
+			Payload:  []byte("doin"),
+			Position: 3,
+		},
+		Entry{
+			Type:     FileType,
+			Name:     "./hurr.txt",
+			Payload:  []byte("deadbeef"),
+			Position: 2,
+		},
+		Entry{
+			Type:     SegmentType,
+			Payload:  []byte("how"),
+			Position: 0,
+		},
+	}
+	sort.Sort(e)
+	if e[0].Position != 0 {
+		t.Errorf("expected Position 0, but got %d", e[0].Position)
+	}
+}
+
+func TestFile(t *testing.T) {
+	f := Entry{
+		Type:     FileType,
+		Name:     "./hello.txt",
+		Size:     100,
+		Position: 2,
+	}
+
+	buf, err := json.Marshal(f)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	f1 := Entry{}
+	if err = json.Unmarshal(buf, &f1); err != nil {
+		t.Fatal(err)
+	}
+
+	if f.Name != f1.Name {
+		t.Errorf("expected Name %q, got %q", f.Name, f1.Name)
+	}
+	if f.Size != f1.Size {
+		t.Errorf("expected Size %q, got %q", f.Size, f1.Size)
+	}
+	if f.Position != f1.Position {
+		t.Errorf("expected Position %q, got %q", f.Position, f1.Position)
+	}
+}