1// Copyright 2011 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package net
6
7import (
8	"reflect"
9	"strings"
10	"testing"
11)
12
13var parseMACTests = []struct {
14	in  string
15	out HardwareAddr
16	err string
17}{
18	// See RFC 7042, Section 2.1.1.
19	{"00:00:5e:00:53:01", HardwareAddr{0x00, 0x00, 0x5e, 0x00, 0x53, 0x01}, ""},
20	{"00-00-5e-00-53-01", HardwareAddr{0x00, 0x00, 0x5e, 0x00, 0x53, 0x01}, ""},
21	{"0000.5e00.5301", HardwareAddr{0x00, 0x00, 0x5e, 0x00, 0x53, 0x01}, ""},
22
23	// See RFC 7042, Section 2.2.2.
24	{"02:00:5e:10:00:00:00:01", HardwareAddr{0x02, 0x00, 0x5e, 0x10, 0x00, 0x00, 0x00, 0x01}, ""},
25	{"02-00-5e-10-00-00-00-01", HardwareAddr{0x02, 0x00, 0x5e, 0x10, 0x00, 0x00, 0x00, 0x01}, ""},
26	{"0200.5e10.0000.0001", HardwareAddr{0x02, 0x00, 0x5e, 0x10, 0x00, 0x00, 0x00, 0x01}, ""},
27
28	// See RFC 4391, Section 9.1.1.
29	{
30		"00:00:00:00:fe:80:00:00:00:00:00:00:02:00:5e:10:00:00:00:01",
31		HardwareAddr{
32			0x00, 0x00, 0x00, 0x00,
33			0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
34			0x02, 0x00, 0x5e, 0x10, 0x00, 0x00, 0x00, 0x01,
35		},
36		"",
37	},
38	{
39		"00-00-00-00-fe-80-00-00-00-00-00-00-02-00-5e-10-00-00-00-01",
40		HardwareAddr{
41			0x00, 0x00, 0x00, 0x00,
42			0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
43			0x02, 0x00, 0x5e, 0x10, 0x00, 0x00, 0x00, 0x01,
44		},
45		"",
46	},
47	{
48		"0000.0000.fe80.0000.0000.0000.0200.5e10.0000.0001",
49		HardwareAddr{
50			0x00, 0x00, 0x00, 0x00,
51			0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
52			0x02, 0x00, 0x5e, 0x10, 0x00, 0x00, 0x00, 0x01,
53		},
54		"",
55	},
56
57	{"ab:cd:ef:AB:CD:EF", HardwareAddr{0xab, 0xcd, 0xef, 0xab, 0xcd, 0xef}, ""},
58	{"ab:cd:ef:AB:CD:EF:ab:cd", HardwareAddr{0xab, 0xcd, 0xef, 0xab, 0xcd, 0xef, 0xab, 0xcd}, ""},
59	{
60		"ab:cd:ef:AB:CD:EF:ab:cd:ef:AB:CD:EF:ab:cd:ef:AB:CD:EF:ab:cd",
61		HardwareAddr{
62			0xab, 0xcd, 0xef, 0xab,
63			0xcd, 0xef, 0xab, 0xcd, 0xef, 0xab, 0xcd, 0xef,
64			0xab, 0xcd, 0xef, 0xab, 0xcd, 0xef, 0xab, 0xcd,
65		},
66		"",
67	},
68
69	{"01.02.03.04.05.06", nil, "invalid MAC address"},
70	{"01:02:03:04:05:06:", nil, "invalid MAC address"},
71	{"x1:02:03:04:05:06", nil, "invalid MAC address"},
72	{"01002:03:04:05:06", nil, "invalid MAC address"},
73	{"01:02003:04:05:06", nil, "invalid MAC address"},
74	{"01:02:03004:05:06", nil, "invalid MAC address"},
75	{"01:02:03:04005:06", nil, "invalid MAC address"},
76	{"01:02:03:04:05006", nil, "invalid MAC address"},
77	{"01-02:03:04:05:06", nil, "invalid MAC address"},
78	{"01:02-03-04-05-06", nil, "invalid MAC address"},
79	{"0123:4567:89AF", nil, "invalid MAC address"},
80	{"0123-4567-89AF", nil, "invalid MAC address"},
81}
82
83func TestParseMAC(t *testing.T) {
84	match := func(err error, s string) bool {
85		if s == "" {
86			return err == nil
87		}
88		return err != nil && strings.Contains(err.Error(), s)
89	}
90
91	for i, tt := range parseMACTests {
92		out, err := ParseMAC(tt.in)
93		if !reflect.DeepEqual(out, tt.out) || !match(err, tt.err) {
94			t.Errorf("ParseMAC(%q) = %v, %v, want %v, %v", tt.in, out, err, tt.out, tt.err)
95		}
96		if tt.err == "" {
97			// Verify that serialization works too, and that it round-trips.
98			s := out.String()
99			out2, err := ParseMAC(s)
100			if err != nil {
101				t.Errorf("%d. ParseMAC(%q) = %v", i, s, err)
102				continue
103			}
104			if !reflect.DeepEqual(out2, out) {
105				t.Errorf("%d. ParseMAC(%q) = %v, want %v", i, s, out2, out)
106			}
107		}
108	}
109}
110