.

wcfs/δbtail_test.go

@@ -591,3 +591,30 @@ func TestKVDiff(t *testing.T) {
 		t.Fatalf("error:\ngot:  %v\nwant: %v", got, want)
 	}
 }
+
+// kvtxt returns string representation of {} kv.
+func kvtxt(kv map[Key]string) string {
+	keyv := []Key{}
+	for k := range kv { keyv = append(keyv, k) }
+	sort.Slice(keyv, func(i,j int) bool { return keyv[i] < keyv[j] })
+
+	sv := []string{}
+	for _, k := range keyv {
+		v := kv[k]
+		if strings.ContainsAny(v, " \n\t,:") {
+			panic(fmt.Sprintf("[%v]=%q: invalid value", k, v))
+		}
+		sv = append(sv, fmt.Sprintf("%v:%s", k, v))
+	}
+
+	return strings.Join(sv, ",")
+}
+
+func TestKVTxt(t *testing.T) {
+	kv := map[Key]string{3:"hello", 1:"zzz", 4:"world"}
+	got  := kvtxt(kv)
+	want := "1:zzz,3:hello,4:world"
+	if got != want {
+		t.Fatalf("error:\ngot:  %q\nwant: %q", got, want)
+	}
+}