tailscale/net/netns/netns_darwin_test.go

85 lines
1.7 KiB
Go
Raw Permalink Normal View History

// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
package netns
import (
"testing"
"tailscale.com/net/interfaces"
)
func TestGetInterfaceIndex(t *testing.T) {
oldVal := bindToInterfaceByRoute.Load()
t.Cleanup(func() { bindToInterfaceByRoute.Store(oldVal) })
bindToInterfaceByRoute.Store(true)
tests := []struct {
name string
addr string
err string
}{
{
name: "IP_and_port",
addr: "8.8.8.8:53",
},
{
name: "bare_ip",
addr: "8.8.8.8",
},
{
name: "invalid",
addr: "!!!!!",
},
}
for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
idx, err := getInterfaceIndex(t.Logf, nil, tc.addr)
if err != nil {
if tc.err == "" {
t.Fatalf("got unexpected error: %v", err)
}
if errstr := err.Error(); errstr != tc.err {
t.Errorf("expected error %q, got %q", errstr, tc.err)
}
} else {
t.Logf("getInterfaceIndex(%q) = %d", tc.addr, idx)
if tc.err != "" {
t.Fatalf("wanted error %q", tc.err)
}
if idx < 0 {
t.Fatalf("got invalid index %d", idx)
}
}
})
}
t.Run("NoTailscale", func(t *testing.T) {
tsif, err := tailscaleInterface()
if err != nil {
t.Fatal(err)
}
if tsif == nil {
t.Skip("no tailscale interface on this machine")
}
defaultIdx, err := interfaces.DefaultRouteInterfaceIndex()
if err != nil {
t.Fatal(err)
}
idx, err := getInterfaceIndex(t.Logf, nil, "100.100.100.100:53")
if err != nil {
t.Fatal(err)
}
t.Logf("tailscaleIdx=%d defaultIdx=%d idx=%d", tsif.Index, defaultIdx, idx)
if idx == tsif.Index {
t.Fatalf("got idx=%d; wanted not Tailscale interface", idx)
} else if idx != defaultIdx {
t.Fatalf("got idx=%d, want %d", idx, defaultIdx)
}
})
}