// Copyright 2013 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. // +build darwin freebsd linux netbsd openbsd package net import ( "os" "os/exec" "runtime" "testing" "time" ) type testInterface struct { name string local string remote string setupCmds []*exec.Cmd teardownCmds []*exec.Cmd } func (ti *testInterface) setup() error { for _, cmd := range ti.setupCmds { if err := cmd.Run(); err != nil { return err } } return nil } func (ti *testInterface) teardown() error { for _, cmd := range ti.teardownCmds { if err := cmd.Run(); err != nil { return err } } return nil } func TestPointToPointInterface(t *testing.T) { if testing.Short() { t.Skip("skipping test in short mode") } switch { case runtime.GOOS == "darwin": t.Skipf("skipping read test on %q", runtime.GOOS) } if os.Getuid() != 0 { t.Skip("skipping test; must be root") } local, remote := "169.254.0.1", "169.254.0.254" ip := ParseIP(remote) for i := 0; i < 3; i++ { ti := &testInterface{} if err := ti.setPointToPoint(5963+i, local, remote); err != nil { t.Skipf("test requries external command: %v", err) } if err := ti.setup(); err != nil { t.Fatalf("testInterface.setup failed: %v", err) } else { time.Sleep(3 * time.Millisecond) } ift, err := Interfaces() if err != nil { ti.teardown() t.Fatalf("Interfaces failed: %v", err) } for _, ifi := range ift { if ti.name == ifi.Name { ifat, err := ifi.Addrs() if err != nil { ti.teardown() t.Fatalf("Interface.Addrs failed: %v", err) } for _, ifa := range ifat { if ip.Equal(ifa.(*IPNet).IP) { ti.teardown() t.Fatalf("got %v; want %v", ip, local) } } } } if err := ti.teardown(); err != nil { t.Fatalf("testInterface.teardown failed: %v", err) } else { time.Sleep(3 * time.Millisecond) } } } func TestInterfaceArrivalAndDeparture(t *testing.T) { if testing.Short() { t.Skip("skipping test in short mode") } if os.Getuid() != 0 { t.Skip("skipping test; must be root") } for i := 0; i < 3; i++ { ift1, err := Interfaces() if err != nil { t.Fatalf("Interfaces failed: %v", err) } ti := &testInterface{} if err := ti.setBroadcast(5682 + i); err != nil { t.Skipf("test requires external command: %v", err) } if err := ti.setup(); err != nil { t.Fatalf("testInterface.setup failed: %v", err) } else { time.Sleep(3 * time.Millisecond) } ift2, err := Interfaces() if err != nil { ti.teardown() t.Fatalf("Interfaces failed: %v", err) } if len(ift2) <= len(ift1) { for _, ifi := range ift1 { t.Logf("before: %v", ifi) } for _, ifi := range ift2 { t.Logf("after: %v", ifi) } ti.teardown() t.Fatalf("got %v; want gt %v", len(ift2), len(ift1)) } if err := ti.teardown(); err != nil { t.Fatalf("testInterface.teardown failed: %v", err) } else { time.Sleep(3 * time.Millisecond) } ift3, err := Interfaces() if err != nil { t.Fatalf("Interfaces failed: %v", err) } if len(ift3) >= len(ift2) { for _, ifi := range ift2 { t.Logf("before: %v", ifi) } for _, ifi := range ift3 { t.Logf("after: %v", ifi) } t.Fatalf("got %v; want lt %v", len(ift3), len(ift2)) } } }