added test for router in context

Author: Corné de Jong

mux_test.go

@@ -1769,7 +1769,70 @@ func TestPanicOnCapturingGroups(t *testing.T) {
 }
 
 func TestRouterInContext(t *testing.T) {
-	// TODO Write tests for router in context
+	router := NewRouter()
+	router.HandleFunc("/r1", func(w http.ResponseWriter, r *http.Request) {
+		contextRouter := CurrentRouter(r)
+		if contextRouter == nil {
+			t.Fatal("Router not found in context")
+			return
+		}
+
+		route := contextRouter.Get("r2")
+		if route == nil {
+			t.Fatal("Route with name not found")
+			return
+		}
+
+		url, err := route.URL()
+		if err != nil {
+			t.Fatal("Error while getting url for r2: ", err)
+			return
+		}
+
+		_, err = w.Write([]byte(url.String()))
+		if err != nil {
+			t.Fatalf("Failed writing HTTP response: %v", err)
+		}
+	}).Name("r1")
+
+	noRouterMsg := []byte("no-router")
+	haveRouterMsg := []byte("have-router")
+	router.HandleFunc("/r2", func(w http.ResponseWriter, r *http.Request) {
+		var msg []byte
+
+		contextRouter := CurrentRouter(r)
+		if contextRouter == nil {
+			msg = noRouterMsg
+		} else {
+			msg = haveRouterMsg
+		}
+
+		_, err := w.Write(msg)
+		if err != nil {
+			t.Fatalf("Failed writing HTTP response: %v", err)
+		}
+	}).Name("r2")
+
+	t.Run("router in request context get route by name", func(t *testing.T) {
+		rw := NewRecorder()
+		req := newRequest("GET", "/r1")
+
+		router.ServeHTTP(rw, req)
+		if !bytes.Equal(rw.Body.Bytes(), []byte("/r2")) {
+			t.Fatalf("Expected output to be '/r1' but got '%s'", rw.Body.String())
+		}
+	})
+
+	t.Run("omit router from request context", func(t *testing.T) {
+		rw := NewRecorder()
+		req := newRequest("GET", "/r2")
+
+		router.OmitRouterFromContext(true)
+		router.ServeHTTP(rw, req)
+		if !bytes.Equal(rw.Body.Bytes(), noRouterMsg) {
+			t.Fatal("Router not omitted from context")
+		}
+	})
 }
 
 // ----------------------------------------------------------------------------