cleanup client/selector/lookup (#1937)

* cleanup client/selector/lookup

* add mdns router, remove registry from client

* fix roundtripper

* remove comment

* fix compile issue

* fix mucp test

* fix api router

selector/tests.go

@@ -3,47 +3,35 @@ package selector
 import (
 	"testing"
 
-	"github.com/micro/go-micro/v3/router"
 	"github.com/stretchr/testify/assert"
 )
 
 // Tests runs all the tests against a selector to ensure the implementations are consistent
 func Tests(t *testing.T, s Selector) {
-	r1 := router.Route{Service: "go.micro.service.foo", Address: "127.0.0.1:8000"}
-	r2 := router.Route{Service: "go.micro.service.foo", Address: "127.0.0.1:8001"}
+	r1 := "127.0.0.1:8000"
+	r2 := "127.0.0.1:8001"
 
 	t.Run("Select", func(t *testing.T) {
 		t.Run("NoRoutes", func(t *testing.T) {
-			srv, err := s.Select([]router.Route{})
-			assert.Nil(t, srv, "Route should be nil")
+			_, err := s.Select([]string{})
 			assert.Equal(t, ErrNoneAvailable, err, "Expected error to be none available")
 		})
 
 		t.Run("OneRoute", func(t *testing.T) {
-			srv, err := s.Select([]router.Route{r1})
+			next, err := s.Select([]string{r1})
+			srv := next()
 			assert.Nil(t, err, "Error should be nil")
-			assert.Equal(t, r1, *srv, "Expected the route to be returned")
+			assert.Equal(t, r1, srv, "Expected the route to be returned")
 		})
 
 		t.Run("MultipleRoutes", func(t *testing.T) {
-			srv, err := s.Select([]router.Route{r1, r2})
+			next, err := s.Select([]string{r1, r2})
 			assert.Nil(t, err, "Error should be nil")
-			if srv.Address != r1.Address && srv.Address != r2.Address {
+			srv := next()
+			if srv != r1 && srv != r2 {
 				t.Errorf("Expected the route to be one of the inputs")
 			}
 		})
-
-		t.Run("Filters", func(t *testing.T) {
-			var filterApplied bool
-			filter := func(rts []router.Route) []router.Route {
-				filterApplied = true
-				return rts
-			}
-
-			_, err := s.Select([]router.Route{r1, r2}, WithFilter(filter))
-			assert.Nil(t, err, "Error should be nil")
-			assert.True(t, filterApplied, "Filters should be applied")
-		})
 	})
 
 	t.Run("Record", func(t *testing.T) {