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tailscale/portlist/portlist_test.go

204 lines
4.7 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 portlist
import (
"net"
"testing"
"tailscale.com/tstest"
)
func TestGetList(t *testing.T) {
tstest.ResourceCheck(t)
pl, err := getList(nil)
if err != nil {
t.Fatal(err)
}
for i, p := range pl {
t.Logf("[%d] %+v", i, p)
}
t.Logf("As String: %v", pl.String())
}
func TestIgnoreLocallyBoundPorts(t *testing.T) {
tstest.ResourceCheck(t)
ln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Skipf("failed to bind: %v", err)
}
defer ln.Close()
ta := ln.Addr().(*net.TCPAddr)
port := ta.Port
pl, err := getList(nil)
if err != nil {
t.Fatal(err)
}
for _, p := range pl {
if p.Proto == "tcp" && int(p.Port) == port {
t.Fatal("didn't expect to find test's localhost ephemeral port")
}
}
}
func TestLessThan(t *testing.T) {
tests := []struct {
name string
a, b Port
want bool
}{
{
"Port a < b",
Port{Proto: "tcp", Port: 100, Process: "proc1", inode: "inode1"},
Port{Proto: "tcp", Port: 101, Process: "proc1", inode: "inode1"},
true,
},
{
"Port a > b",
Port{Proto: "tcp", Port: 101, Process: "proc1", inode: "inode1"},
Port{Proto: "tcp", Port: 100, Process: "proc1", inode: "inode1"},
false,
},
{
"Proto a < b",
Port{Proto: "tcp", Port: 100, Process: "proc1", inode: "inode1"},
Port{Proto: "udp", Port: 100, Process: "proc1", inode: "inode1"},
true,
},
{
"Proto a < b",
Port{Proto: "udp", Port: 100, Process: "proc1", inode: "inode1"},
Port{Proto: "tcp", Port: 100, Process: "proc1", inode: "inode1"},
false,
},
{
"inode a < b",
Port{Proto: "tcp", Port: 100, Process: "proc1", inode: "inode1"},
Port{Proto: "tcp", Port: 100, Process: "proc1", inode: "inode2"},
true,
},
{
"inode a > b",
Port{Proto: "tcp", Port: 100, Process: "proc2", inode: "inode2"},
Port{Proto: "tcp", Port: 100, Process: "proc1", inode: "inode1"},
false,
},
{
"Process a < b",
Port{Proto: "tcp", Port: 100, Process: "proc1", inode: "inode1"},
Port{Proto: "tcp", Port: 100, Process: "proc2", inode: "inode1"},
true,
},
{
"Process a > b",
Port{Proto: "tcp", Port: 100, Process: "proc2", inode: "inode1"},
Port{Proto: "tcp", Port: 100, Process: "proc1", inode: "inode1"},
false,
},
{
"Port evaluated first",
Port{Proto: "udp", Port: 100, Process: "proc2", inode: "inode2"},
Port{Proto: "tcp", Port: 101, Process: "proc1", inode: "inode1"},
true,
},
{
"Proto evaluated second",
Port{Proto: "tcp", Port: 100, Process: "proc2", inode: "inode2"},
Port{Proto: "udp", Port: 100, Process: "proc1", inode: "inode1"},
true,
},
{
"inode evaluated third",
Port{Proto: "tcp", Port: 100, Process: "proc2", inode: "inode1"},
Port{Proto: "tcp", Port: 100, Process: "proc1", inode: "inode2"},
true,
},
{
"Process evaluated fourth",
Port{Proto: "tcp", Port: 100, Process: "proc1", inode: "inode1"},
Port{Proto: "tcp", Port: 100, Process: "proc2", inode: "inode1"},
true,
},
{
"equal",
Port{Proto: "tcp", Port: 100, Process: "proc1", inode: "inode1"},
Port{Proto: "tcp", Port: 100, Process: "proc1", inode: "inode1"},
false,
},
}
for _, tt := range tests {
got := tt.a.lessThan(&tt.b)
if got != tt.want {
t.Errorf("%s: Equal = %v; want %v", tt.name, got, tt.want)
}
}
}
func TestSameInodes(t *testing.T) {
port1 := Port{Proto: "tcp", Port: 100, Process: "proc", inode: "inode1"}
port2 := Port{Proto: "tcp", Port: 100, Process: "proc", inode: "inode1"}
portProto := Port{Proto: "udp", Port: 100, Process: "proc", inode: "inode1"}
portPort := Port{Proto: "tcp", Port: 101, Process: "proc", inode: "inode1"}
portInode := Port{Proto: "tcp", Port: 100, Process: "proc", inode: "inode2"}
portProcess := Port{Proto: "tcp", Port: 100, Process: "other", inode: "inode1"}
tests := []struct {
name string
a, b List
want bool
}{
{
"identical",
List{port1, port1},
List{port2, port2},
true,
},
{
"proto differs",
List{port1, port1},
List{port2, portProto},
false,
},
{
"port differs",
List{port1, port1},
List{port2, portPort},
false,
},
{
"inode differs",
List{port1, port1},
List{port2, portInode},
false,
},
{
// SameInodes does not check the Process field
"Process differs",
List{port1, port1},
List{port2, portProcess},
true,
},
}
for _, tt := range tests {
got := tt.a.sameInodes(tt.b)
if got != tt.want {
t.Errorf("%s: Equal = %v; want %v", tt.name, got, tt.want)
}
}
}
func BenchmarkGetList(b *testing.B) {
b.ReportAllocs()
for i := 0; i < b.N; i++ {
_, err := getList(nil)
if err != nil {
b.Fatal(err)
}
}
}