1 package pflag
2
3 import (
4 "fmt"
5 "net"
6 "os"
7 "testing"
8 )
9
10 func setUpIPNet(ip *net.IPNet) *FlagSet {
11 f := NewFlagSet("test", ContinueOnError)
12 _, def, _ := net.ParseCIDR("0.0.0.0/0")
13 f.IPNetVar(ip, "address", *def, "IP Address")
14 return f
15 }
16
17 func TestIPNet(t *testing.T) {
18 testCases := []struct {
19 input string
20 success bool
21 expected string
22 }{
23 {"0.0.0.0/0", true, "0.0.0.0/0"},
24 {" 0.0.0.0/0 ", true, "0.0.0.0/0"},
25 {"1.2.3.4/8", true, "1.0.0.0/8"},
26 {"127.0.0.1/16", true, "127.0.0.0/16"},
27 {"255.255.255.255/19", true, "255.255.224.0/19"},
28 {"255.255.255.255/32", true, "255.255.255.255/32"},
29 {"", false, ""},
30 {"/0", false, ""},
31 {"0", false, ""},
32 {"0/0", false, ""},
33 {"localhost/0", false, ""},
34 {"0.0.0/4", false, ""},
35 {"0.0.0./8", false, ""},
36 {"0.0.0.0./12", false, ""},
37 {"0.0.0.256/16", false, ""},
38 {"0.0.0.0 /20", false, ""},
39 {"0.0.0.0/ 24", false, ""},
40 {"0 . 0 . 0 . 0 / 28", false, ""},
41 {"0.0.0.0/33", false, ""},
42 }
43
44 devnull, _ := os.Open(os.DevNull)
45 os.Stderr = devnull
46 for i := range testCases {
47 var addr net.IPNet
48 f := setUpIPNet(&addr)
49
50 tc := &testCases[i]
51
52 arg := fmt.Sprintf("--address=%s", tc.input)
53 err := f.Parse([]string{arg})
54 if err != nil && tc.success == true {
55 t.Errorf("expected success, got %q", err)
56 continue
57 } else if err == nil && tc.success == false {
58 t.Errorf("expected failure")
59 continue
60 } else if tc.success {
61 ip, err := f.GetIPNet("address")
62 if err != nil {
63 t.Errorf("Got error trying to fetch the IP flag: %v", err)
64 }
65 if ip.String() != tc.expected {
66 t.Errorf("expected %q, got %q", tc.expected, ip.String())
67 }
68 }
69 }
70 }
71
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