Change tests to be more integration oriented

internal/restrictednet/settings.go

@@ -2,7 +2,6 @@ package restrictednet
 
 import (
 	"errors"
-	"net/http"
 
 	"github.com/qdm12/dns/v2/pkg/provider"
 )
@@ -12,13 +11,6 @@ type Settings struct {
 	IPv6Supported     *bool
 	Firewall          Firewall
 	UpstreamResolvers []provider.Provider
-	BaseTransport     *http.Transport
-}
-
-func (s *Settings) setDefaults() {
-	if s.BaseTransport == nil {
-		s.BaseTransport = http.DefaultTransport.(*http.Transport) //nolint:forcetypeassert
-	}
 }
 
 func (s *Settings) validate() error {