fixes

internal/geoip/geoip_test.go

@@ -0,0 +1,25 @@
+package geoip
+
+import (
+	"net/netip"
+	"testing"
+)
+
+func TestLookupWithoutDB(t *testing.T) {
+	var l *Lookup
+	if r := l.Lookup(netip.MustParseAddr("8.8.8.8")); r.Configured || r.Country != "" {
+		t.Fatalf("unexpected result %+v", r)
+	}
+	if r := l.Lookup(netip.MustParseAddr("10.1.2.3")); r.Scope != "private" {
+		t.Fatalf("want private scope, got %+v", r)
+	}
+	if r := l.Lookup(netip.MustParseAddr("::ffff:127.0.0.1")); r.Scope != "loopback" || r.IP != "127.0.0.1" {
+		t.Fatalf("want unmapped loopback, got %+v", r)
+	}
+}
+
+func TestOpenEmpty(t *testing.T) {
+	if l, err := Open("", ""); l != nil || err != nil {
+		t.Fatalf("want nil,nil got %v,%v", l, err)
+	}
+}