feat(model): нейтральная модель Record с нормализацией и Equal

internal/model/record_test.go

@@ -0,0 +1,56 @@
+package model
+
+import "testing"
+
+func TestManaged(t *testing.T) {
+	managed := []RecordType{A, AAAA, CNAME, MX, TXT, SRV}
+	for _, rt := range managed {
+		if !rt.Managed() {
+			t.Errorf("%s should be managed", rt)
+		}
+	}
+	for _, rt := range []RecordType{NS, SOA} {
+		if rt.Managed() {
+			t.Errorf("%s should be read-only", rt)
+		}
+	}
+}
+
+func TestKeyNormalizesName(t *testing.T) {
+	r1 := Record{Type: A, Name: "www.Example.com"}
+	r2 := Record{Type: A, Name: "www.example.com."}
+	if r1.Key() != r2.Key() {
+		t.Fatalf("keys differ: %q vs %q", r1.Key(), r2.Key())
+	}
+	if r1.Key() != "A www.example.com." {
+		t.Fatalf("unexpected key %q", r1.Key())
+	}
+}
+
+func TestEqualMXPriorityAndOrder(t *testing.T) {
+	a := Record{Type: MX, Name: "example.com.", TTL: 3600, Values: []string{"10 mx1.example.com.", "20 mx2.Example.com."}}
+	b := Record{Type: MX, Name: "example.com.", TTL: 3600, Values: []string{"20 mx2.example.com.", "10 mx1.example.com."}}
+	if !a.Equal(b) {
+		t.Fatal("MX records equal regardless of order and target case")
+	}
+	c := Record{Type: MX, Name: "example.com.", TTL: 3600, Values: []string{"30 mx1.example.com."}}
+	if a.Equal(c) {
+		t.Fatal("different priority must not be equal")
+	}
+}
+
+func TestEqualTXTCaseSensitive(t *testing.T) {
+	a := Record{Type: TXT, Name: "example.com.", TTL: 60, Values: []string{"v=DKIM1; p=AbC"}}
+	b := Record{Type: TXT, Name: "example.com.", TTL: 60, Values: []string{"v=DKIM1; p=abc"}}
+	if a.Equal(b) {
+		t.Fatal("TXT is case-sensitive")
+	}
+}
+
+func TestEqualTTLMatters(t *testing.T) {
+	a := Record{Type: A, Name: "example.com.", TTL: 300, Values: []string{"1.2.3.4"}}
+	b := Record{Type: A, Name: "example.com.", TTL: 600, Values: []string{"1.2.3.4"}}
+	if a.Equal(b) {
+		t.Fatal("different TTL must not be equal")
+	}
+}