re-encode card

decoder_test.go

@@ -1,6 +1,7 @@
 package vcard
 
 import (
+	"bytes"
 	"reflect"
 	"strings"
 	"testing"
@@ -133,6 +134,29 @@ func TestDecoder(t *testing.T) {
 				}
 			}
 		}
+
+		var buf bytes.Buffer
+		err = NewEncoder(&buf).Encode(card)
+		if err != nil {
+			t.Fatal("Expected no error when encoding card, got:", err)
+		}
+		// the encoding is not canonical, so we can't compare it
+		// we re-decode the encoded part instead
+		cardReEncoded, err := NewDecoder(&buf).Decode()
+		if err != nil {
+			t.Fatal("Expected no error when re-decoding card, got:", err)
+		}
+		if !reflect.DeepEqual(cardReEncoded, test.card) {
+			t.Errorf("Invalid re-parsed card: expected \n%+v\n but got \n%+v", test.card, cardReEncoded)
+			for k, fields := range test.card {
+				if reflect.DeepEqual(fields, cardReEncoded[k]) {
+					continue
+				}
+				for i := range fields {
+					t.Log(k, i, fields[i], cardReEncoded[k][i])
+				}
+			}
+		}
 	}
 }