50 lines
1.0 KiB
Go
50 lines
1.0 KiB
Go
// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package bpf_test
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import (
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"testing"
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"golang.org/x/net/bpf"
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)
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func TestVMLoadExtensionNotImplemented(t *testing.T) {
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_, _, err := testVM(t, []bpf.Instruction{
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bpf.LoadExtension{
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Num: 100,
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},
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bpf.RetA{},
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})
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if errStr(err) != "extension 100 not implemented" {
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t.Fatalf("unexpected error: %v", err)
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}
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}
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func TestVMLoadExtensionExtLen(t *testing.T) {
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vm, done, err := testVM(t, []bpf.Instruction{
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bpf.LoadExtension{
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Num: bpf.ExtLen,
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},
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bpf.RetA{},
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})
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if err != nil {
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t.Fatalf("failed to load BPF program: %v", err)
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}
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defer done()
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out, err := vm.Run([]byte{
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0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff,
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0, 1, 2, 3,
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})
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if err != nil {
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t.Fatalf("unexpected error while running program: %v", err)
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}
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if want, got := 4, out; want != got {
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t.Fatalf("unexpected number of output bytes:\n- want: %d\n- got: %d",
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want, got)
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}
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}
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