syncthing/internal/discover/discover_test.go

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// Copyright (C) 2014 The Syncthing Authors.
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//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation, either version 3 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along
// with this program. If not, see <http://www.gnu.org/licenses/>.
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package discover
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import (
"net/url"
"time"
"testing"
"github.com/syncthing/protocol"
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)
type DummyClient struct {
url *url.URL
lookups []protocol.DeviceID
lookupRet []string
stops int
statusRet bool
statusChecks int
}
func (c *DummyClient) Lookup(device protocol.DeviceID) []string {
c.lookups = append(c.lookups, device)
return c.lookupRet
}
func (c *DummyClient) StatusOK() bool {
c.statusChecks++
return c.statusRet
}
func (c *DummyClient) Stop() {
c.stops++
}
func (c *DummyClient) Address() string {
return c.url.String()
}
func TestGlobalDiscovery(t *testing.T) {
c1 := &DummyClient{
statusRet: false,
lookupRet: []string{"test.com:1234"},
}
c2 := &DummyClient{
statusRet: true,
lookupRet: []string{},
}
c3 := &DummyClient{
statusRet: true,
lookupRet: []string{"best.com:2345"},
}
clients := []*DummyClient{c1, c2}
Register("test1", func(uri *url.URL, pkt *Announce) (Client, error) {
c := clients[0]
clients = clients[1:]
c.url = uri
return c, nil
})
Register("test2", func(uri *url.URL, pkt *Announce) (Client, error) {
c3.url = uri
return c3, nil
})
d := NewDiscoverer(device, []string{})
d.localBcastStart = time.Time{}
servers := []string{
"test1://123.123.123.123:1234",
"test1://23.23.23.23:234",
"test2://234.234.234.234.2345",
}
d.StartGlobal(servers, 1234)
if len(d.clients) != 3 {
t.Fatal("Wrong number of clients")
}
status := d.ExtAnnounceOK()
for _, c := range []*DummyClient{c1, c2, c3} {
if status[c.url.String()] != c.statusRet || c.statusChecks != 1 {
t.Fatal("Wrong status")
}
}
addrs := d.Lookup(device)
if len(addrs) != 2 {
t.Fatal("Wrong numer of addresses", addrs)
}
for _, addr := range []string{"test.com:1234", "best.com:2345"} {
found := false
for _, laddr := range addrs {
if laddr == addr {
found = true
break
}
}
if !found {
t.Fatal("Couldn't find", addr)
}
}
for _, c := range []*DummyClient{c1, c2, c3} {
if len(c.lookups) != 1 || c.lookups[0] != device {
t.Fatal("Wrong lookups")
}
}
addrs = d.Lookup(device)
if len(addrs) != 2 {
t.Fatal("Wrong numer of addresses", addrs)
}
// Answer should be cached, so number of lookups should have not incresed
for _, c := range []*DummyClient{c1, c2, c3} {
if len(c.lookups) != 1 || c.lookups[0] != device {
t.Fatal("Wrong lookups")
}
}
d.StopGlobal()
for _, c := range []*DummyClient{c1, c2, c3} {
if c.stops != 1 {
t.Fatal("Wrong number of stops")
}
}
}