update tests

internal/mode/static/state/graph/route_common.go

@@ -550,9 +550,11 @@ func isRouteTypeAllowedByListener(listener *Listener, routeType RouteType) bool
 		return false
 	}
 
-	if listener.Source.Protocol == v1.HTTPProtocolType || listener.Source.Protocol == v1.HTTPSProtocolType {
+	switch listener.Source.Protocol {
+	case v1.HTTPProtocolType, v1.HTTPSProtocolType:
 		return routeType == RouteTypeHTTP || routeType == RouteTypeGRPC
 	}
+
 	return false
 }
 

internal/mode/static/state/graph/route_common_test.go

@@ -1762,6 +1762,30 @@ func TestAllowedRouteType(t *testing.T) {
 			},
 			expResult: true,
 		},
+		{
+			name:      "listener  protocol set to tcp, grpcRoute is not allowed",
+			routeType: RouteTypeGRPC,
+			listener: &Listener{
+				Source: gatewayv1.Listener{
+					Protocol: gatewayv1.TCPProtocolType,
+				},
+			},
+			expResult: false,
+		},
+		{
+			name:      "grpcRoute with listener allowedRoutes set to grpcRoute is allowed",
+			routeType: RouteTypeGRPC,
+			listener: &Listener{
+				Source: gatewayv1.Listener{
+					AllowedRoutes: &gatewayv1.AllowedRoutes{
+						Kinds: []gatewayv1.RouteGroupKind{
+							{Kind: kinds.GRPCRoute},
+						},
+					},
+				},
+			},
+			expResult: true,
+		},
 		{
 			name:      "grpcRoute with listener allowedRoutes set to httpRoute is not allowed",
 			routeType: RouteTypeGRPC,
@@ -1791,18 +1815,18 @@ func TestAllowedRouteType(t *testing.T) {
 			expResult: false,
 		},
 		{
-			name:      "grpcRoute with listener allowedRoutes set to grpcRoute is allowed",
+			name:      "grpcRoute with listener allowedRoutes set to testRoute is not allowed",
 			routeType: RouteTypeGRPC,
 			listener: &Listener{
 				Source: gatewayv1.Listener{
 					AllowedRoutes: &gatewayv1.AllowedRoutes{
 						Kinds: []gatewayv1.RouteGroupKind{
-							{Kind: kinds.GRPCRoute},
+							{Kind: gatewayv1.Kind("testRoute")},
 						},
 					},
 				},
 			},
-			expResult: true,
+			expResult: false,
 		},
 	}