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|
package vsock
import (
"errors"
"testing"
"github.com/google/go-cmp/cmp"
"golang.org/x/sys/unix"
)
func Test_listenLinuxErrorClosesFile(t *testing.T) {
var closed bool
lfd := &testListenFD{
// Track when fd.Close is called.
close: func() error {
closed = true
return nil
},
// Always return an error on bind.
bind: func(sa unix.Sockaddr) error {
return errors.New("error during bind")
},
}
if _, err := listenLinux(lfd, 0, 0); err == nil {
t.Fatal("expected an error, but none occurred")
}
if diff := cmp.Diff(true, closed); diff != "" {
t.Fatalf("unexpected closed value (-want +got):\n%s", diff)
}
}
func Test_listenLinuxPortZero(t *testing.T) {
const (
cid uint32 = Host
port uint32 = 0
)
lsa := &unix.SockaddrVM{
CID: cid,
// Expect 0 to be turned into "any port".
Port: unix.VMADDR_PORT_ANY,
}
lfd := &testListenFD{
bind: func(sa unix.Sockaddr) error {
if diff := cmp.Diff(lsa, sa.(*unix.SockaddrVM), cmp.AllowUnexported(*lsa)); diff != "" {
t.Fatalf("unexpected bind sockaddr (-want +got):\n%s", diff)
}
return nil
},
listen: func(n int) error { return nil },
getsockname: func() (unix.Sockaddr, error) { return lsa, nil },
setNonblocking: func(_ string) error { return nil },
}
if _, err := listenLinux(lfd, cid, port); err != nil {
t.Fatalf("failed to listen: %v", err)
}
}
func Test_listenLinuxFull(t *testing.T) {
const (
cid uint32 = Host
port uint32 = 1024
)
lsa := &unix.SockaddrVM{
CID: cid,
Port: port,
}
var nonblocking bool
lfd := &testListenFD{
bind: func(sa unix.Sockaddr) error {
if diff := cmp.Diff(lsa, sa.(*unix.SockaddrVM), cmp.AllowUnexported(*lsa)); diff != "" {
t.Fatalf("unexpected bind sockaddr (-want +got):\n%s", diff)
}
return nil
},
listen: func(n int) error {
if diff := cmp.Diff(unix.SOMAXCONN, n); diff != "" {
t.Fatalf("unexpected listen backlog (-want +got):\n%s", diff)
}
return nil
},
getsockname: func() (unix.Sockaddr, error) {
return lsa, nil
},
setNonblocking: func(_ string) error {
nonblocking = true
return nil
},
}
l, err := listenLinux(lfd, cid, port)
if err != nil {
t.Fatalf("failed to listen: %v", err)
}
want := &Addr{
ContextID: cid,
Port: port,
}
if diff := cmp.Diff(true, nonblocking); diff != "" {
t.Fatalf("unexpected non-blocking value (-want +got):\n%s", diff)
}
if diff := cmp.Diff(want, l.Addr()); diff != "" {
t.Fatalf("unexpected local address (-want +got):\n%s", diff)
}
}
func Test_listenerAccept(t *testing.T) {
const (
cid uint32 = 3
port uint32 = 1024
)
var nonblocking bool
accept4Fn := func(flags int) (connFD, unix.Sockaddr, error) {
if diff := cmp.Diff(unix.SOCK_CLOEXEC, flags); diff != "" {
t.Fatalf("unexpected accept4 flags (-want +got):\n%s", diff)
}
acceptFD := &testConnFD{
setNonblocking: func(_ string) error {
nonblocking = true
return nil
},
}
acceptSA := &unix.SockaddrVM{
CID: cid,
Port: port,
}
return acceptFD, acceptSA, nil
}
localAddr := &Addr{
ContextID: Host,
Port: port,
}
l := &listener{
fd: &testListenFD{
accept4: accept4Fn,
},
addr: localAddr,
}
nc, err := l.Accept()
if err != nil {
t.Fatalf("failed to accept: %v", err)
}
// Accept must produce *Conn.
c := nc.(*Conn)
if !nonblocking {
t.Fatal("file descriptor was not set to non-blocking mode")
}
if diff := cmp.Diff(localAddr, c.LocalAddr()); diff != "" {
t.Fatalf("unexpected local address (-want +got):\n%s", diff)
}
remoteAddr := &Addr{
ContextID: cid,
Port: port,
}
if diff := cmp.Diff(remoteAddr, c.RemoteAddr()); diff != "" {
t.Fatalf("unexpected remote address (-want +got):\n%s", diff)
}
}
|
