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// 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"
"tailscale.com/types/wgkey"
)
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()
}
func TestNewDirect(t *testing.T) {
hi := NewHostinfo()
ni := tailcfg.NetInfo{LinkType: "wired"}
hi.NetInfo = &ni
key, err := wgkey.NewPrivate()
if err != nil {
t.Error(err)
}
opts := Options{ServerURL: "https://example.com", MachinePrivateKey: key, Hostinfo: hi}
c, err := NewDirect(opts)
if err != nil {
t.Fatal(err)
}
if c.serverURL != opts.ServerURL {
t.Errorf("c.serverURL got %v want %v", c.serverURL, opts.ServerURL)
}
if !hi.Equal(c.hostinfo) {
t.Errorf("c.hostinfo got %v want %v", c.hostinfo, hi)
}
changed := c.SetNetInfo(&ni)
if changed {
t.Errorf("c.SetNetInfo(ni) want false got %v", changed)
}
ni = tailcfg.NetInfo{LinkType: "wifi"}
changed = c.SetNetInfo(&ni)
if !changed {
t.Errorf("c.SetNetInfo(ni) want true got %v", changed)
}
changed = c.SetHostinfo(hi)
if changed {
t.Errorf("c.SetHostinfo(hi) want false got %v", changed)
}
hi = NewHostinfo()
hi.Hostname = "different host name"
changed = c.SetHostinfo(hi)
if !changed {
t.Errorf("c.SetHostinfo(hi) want true got %v", changed)
}
endpoints := []string{"1", "2", "3"}
changed = c.newEndpoints(12, endpoints)
if !changed {
t.Errorf("c.newEndpoints(12) want true got %v", changed)
}
changed = c.newEndpoints(12, endpoints)
if changed {
t.Errorf("c.newEndpoints(12) want false got %v", changed)
}
changed = c.newEndpoints(13, endpoints)
if !changed {
t.Errorf("c.newEndpoints(13) want true got %v", changed)
}
endpoints = []string{"4", "5", "6"}
changed = c.newEndpoints(13, endpoints)
if !changed {
t.Errorf("c.newEndpoints(13) want true got %v", changed)
}
}
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