File: vm_extension_test.go

package info (click to toggle)
golang-golang-x-net-dev 1%3A0.0%2Bgit20181201.351d144%2Bdfsg-3
  • links: PTS, VCS
  • area: main
  • in suites: buster, buster-backports, experimental
  • size: 5,676 kB
  • sloc: makefile: 53; asm: 18
file content (49 lines) | stat: -rw-r--r-- 1,034 bytes parent folder | download | duplicates (17)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
// Copyright 2016 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.

package bpf_test

import (
	"testing"

	"golang.org/x/net/bpf"
)

func TestVMLoadExtensionNotImplemented(t *testing.T) {
	_, _, err := testVM(t, []bpf.Instruction{
		bpf.LoadExtension{
			Num: 100,
		},
		bpf.RetA{},
	})
	if errStr(err) != "extension 100 not implemented" {
		t.Fatalf("unexpected error: %v", err)
	}
}

func TestVMLoadExtensionExtLen(t *testing.T) {
	vm, done, err := testVM(t, []bpf.Instruction{
		bpf.LoadExtension{
			Num: bpf.ExtLen,
		},
		bpf.RetA{},
	})
	if err != nil {
		t.Fatalf("failed to load BPF program: %v", err)
	}
	defer done()

	out, err := vm.Run([]byte{
		0xff, 0xff, 0xff, 0xff,
		0xff, 0xff, 0xff, 0xff,
		0, 1, 2, 3,
	})
	if err != nil {
		t.Fatalf("unexpected error while running program: %v", err)
	}
	if want, got := 4, out; want != got {
		t.Fatalf("unexpected number of output bytes:\n- want: %d\n-  got: %d",
			want, got)
	}
}