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tailscale/control/controlclient/direct_test.go

94 lines
2.2 KiB
Go

// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package controlclient
import (
"fmt"
"reflect"
"strings"
"testing"
"tailscale.com/tailcfg"
)
func TestUndeltaPeers(t *testing.T) {
n := func(id tailcfg.NodeID, name string) *tailcfg.Node {
return &tailcfg.Node{ID: id, Name: name}
}
peers := func(nv ...*tailcfg.Node) []*tailcfg.Node { return nv }
tests := []struct {
name string
mapRes *tailcfg.MapResponse
prev []*tailcfg.Node
want []*tailcfg.Node
}{
{
name: "full_peers",
mapRes: &tailcfg.MapResponse{
Peers: peers(n(1, "foo"), n(2, "bar")),
},
want: peers(n(1, "foo"), n(2, "bar")),
},
{
name: "full_peers_ignores_deltas",
mapRes: &tailcfg.MapResponse{
Peers: peers(n(1, "foo"), n(2, "bar")),
PeersRemoved: []tailcfg.NodeID{2},
},
want: peers(n(1, "foo"), n(2, "bar")),
},
{
name: "add_and_update",
prev: peers(n(1, "foo"), n(2, "bar")),
mapRes: &tailcfg.MapResponse{
PeersChanged: peers(n(0, "zero"), n(2, "bar2"), n(3, "three")),
},
want: peers(n(0, "zero"), n(1, "foo"), n(2, "bar2"), n(3, "three")),
},
{
name: "remove",
prev: peers(n(1, "foo"), n(2, "bar")),
mapRes: &tailcfg.MapResponse{
PeersRemoved: []tailcfg.NodeID{1},
},
want: peers(n(2, "bar")),
},
{
name: "add_and_remove",
prev: peers(n(1, "foo"), n(2, "bar")),
mapRes: &tailcfg.MapResponse{
PeersChanged: peers(n(1, "foo2")),
PeersRemoved: []tailcfg.NodeID{2},
},
want: peers(n(1, "foo2")),
},
{
name: "unchanged",
prev: peers(n(1, "foo"), n(2, "bar")),
mapRes: &tailcfg.MapResponse{},
want: peers(n(1, "foo"), n(2, "bar")),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
undeltaPeers(tt.mapRes, tt.prev)
if !reflect.DeepEqual(tt.mapRes.Peers, tt.want) {
t.Errorf("wrong results\n got: %s\nwant: %s", formatNodes(tt.mapRes.Peers), formatNodes(tt.want))
}
})
}
}
func formatNodes(nodes []*tailcfg.Node) string {
var sb strings.Builder
for i, n := range nodes {
if i > 0 {
sb.WriteString(", ")
}
fmt.Fprintf(&sb, "(%d, %q)", n.ID, n.Name)
}
return sb.String()
}