NEW FEATURE: diff2: A better "diff" mechanism (#1852)

pkg/diff2/groupsort_test.go

@@ -0,0 +1,45 @@
+package diff2
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/StackExchange/dnscontrol/v3/models"
+)
+
+func makeRec(label, rtype, content string) *models.RecordConfig {
+	origin := "f.com"
+	r := models.RecordConfig{}
+	r.SetLabel(label, origin)
+	r.PopulateFromString(rtype, content, origin)
+	return &r
+}
+func makeRecSet(recs ...*models.RecordConfig) *recset {
+	result := recset{}
+	result.Key = recs[0].Key()
+	result.Recs = append(result.Recs, recs...)
+	return &result
+}
+func Test_groupbyRSet(t *testing.T) {
+
+	wwwa1 := makeRec("www", "A", "1.1.1.1")
+	wwwa2 := makeRec("www", "A", "2.2.2.2")
+	zzza1 := makeRec("zzz", "A", "1.1.0.0")
+	zzza2 := makeRec("zzz", "A", "2.2.0.0")
+	wwwmx1 := makeRec("www", "MX", "1 mx1.foo.com.")
+	wwwmx2 := makeRec("www", "MX", "2 mx2.foo.com.")
+	zzzmx1 := makeRec("zzz", "MX", "1 mx.foo.com.")
+	orig := models.Records{wwwa1, wwwa2, zzza1, zzza2, wwwmx1, wwwmx2, zzzmx1}
+	wantResult := []recset{
+		*makeRecSet(wwwa1, wwwa2),
+		*makeRecSet(wwwmx1, wwwmx2),
+		*makeRecSet(zzza1, zzza2),
+		*makeRecSet(zzzmx1),
+	}
+
+	t.Run("afew", func(t *testing.T) {
+		if gotResult := groupbyRSet(orig, "f.com"); !reflect.DeepEqual(gotResult, wantResult) {
+			t.Errorf("groupbyRSet() = %v, want %v", gotResult, wantResult)
+		}
+	})
+}