1 package sys
2
3 import (
4 "errors"
5 "testing"
6
7 "github.com/cilium/ebpf/internal/unix"
8 )
9
10 func TestObjName(t *testing.T) {
11 name := NewObjName("more_than_16_characters_long")
12 if name[len(name)-1] != 0 {
13 t.Error("NewBPFObjName doesn't null terminate")
14 }
15 if len(name) != unix.BPF_OBJ_NAME_LEN {
16 t.Errorf("Name is %d instead of %d bytes long", len(name), unix.BPF_OBJ_NAME_LEN)
17 }
18 }
19
20 func TestWrappedErrno(t *testing.T) {
21 a := error(wrappedErrno{unix.EINVAL})
22 b := error(unix.EINVAL)
23
24 if a == b {
25 t.Error("wrappedErrno is comparable to plain errno")
26 }
27
28 if !errors.Is(a, b) {
29 t.Error("errors.Is(wrappedErrno, errno) returns false")
30 }
31
32 if errors.Is(a, unix.EAGAIN) {
33 t.Error("errors.Is(wrappedErrno, EAGAIN) returns true")
34 }
35 }
36
37 func TestSyscallError(t *testing.T) {
38 err := errors.New("foo")
39 foo := Error(err, unix.EINVAL)
40
41 if !errors.Is(foo, unix.EINVAL) {
42 t.Error("SyscallError is not the wrapped errno")
43 }
44
45 if !errors.Is(foo, err) {
46 t.Error("SyscallError is not the wrapped error")
47 }
48
49 if errors.Is(unix.EINVAL, foo) {
50 t.Error("Errno is the SyscallError")
51 }
52
53 if errors.Is(err, foo) {
54 t.Error("Error is the SyscallError")
55 }
56 }
57
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