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|
package dhcp6
import (
"bytes"
"reflect"
"testing"
)
type option struct {
code OptionCode
data []byte
}
// TestOptionsAddRaw verifies that Options.AddRaw correctly creates or appends
// key/value Option pairs to an Options map.
func TestOptionsAddRaw(t *testing.T) {
var tests = []struct {
desc string
kv []option
options Options
}{
{
desc: "one key/value pair",
kv: []option{
{
code: 1,
data: []byte("foo"),
},
},
options: Options{
1: [][]byte{[]byte("foo")},
},
},
{
desc: "two key/value pairs",
kv: []option{
{
code: 1,
data: []byte("foo"),
},
{
code: 2,
data: []byte("bar"),
},
},
options: Options{
1: [][]byte{[]byte("foo")},
2: [][]byte{[]byte("bar")},
},
},
{
desc: "three key/value pairs, two with same key",
kv: []option{
{
code: 1,
data: []byte("foo"),
},
{
code: 1,
data: []byte("baz"),
},
{
code: 2,
data: []byte("bar"),
},
},
options: Options{
1: [][]byte{[]byte("foo"), []byte("baz")},
2: [][]byte{[]byte("bar")},
},
},
}
for i, tt := range tests {
o := make(Options)
for _, p := range tt.kv {
o.AddRaw(p.code, p.data)
}
if want, got := tt.options, o; !reflect.DeepEqual(want, got) {
t.Errorf("[%02d] test %q, unexpected Options map:\n- want: %v\n- got: %v",
i, tt.desc, want, got)
}
}
}
// TestOptionsGet verifies that Options.Get correctly selects the first value
// for a given key, if the value is not empty in an Options map.
func TestOptionsGet(t *testing.T) {
var tests = []struct {
desc string
options Options
key OptionCode
value []byte
err error
}{
{
desc: "nil Options map",
err: ErrOptionNotPresent,
},
{
desc: "empty Options map",
options: Options{},
err: ErrOptionNotPresent,
},
{
desc: "value not present in Options map",
options: Options{
2: [][]byte{[]byte("foo")},
},
key: 1,
err: ErrOptionNotPresent,
},
{
desc: "value present in Options map, but zero length value for key",
options: Options{
1: [][]byte{},
},
key: 1,
},
{
desc: "value present in Options map",
options: Options{
1: [][]byte{[]byte("foo")},
},
key: 1,
value: []byte("foo"),
},
{
desc: "value present in Options map, with multiple values",
options: Options{
1: [][]byte{[]byte("foo"), []byte("bar")},
},
key: 1,
err: ErrInvalidPacket,
},
}
for i, tt := range tests {
value, err := tt.options.GetOne(tt.key)
if err != nil {
if want, got := tt.err, err; want != got {
t.Errorf("[%02d] test %q, unexpected err for Options.GetOne(%v): %v != %v",
i, tt.desc, tt.key, want, got)
continue
}
}
if want, got := tt.value, value; !bytes.Equal(want, got) {
t.Errorf("[%02d] test %q, unexpected value for Options.GetOne(%v):\n- want: %v\n- got: %v",
i, tt.desc, tt.key, want, got)
}
}
}
// Test_parseOptions verifies that parseOptions parses correct option values
// from a slice of bytes, and that it returns an empty Options map if the byte
// slice cannot contain options.
func Test_parseOptions(t *testing.T) {
var tests = []struct {
desc string
buf []byte
options Options
err error
}{
{
desc: "nil options bytes",
options: Options{},
},
{
desc: "empty options bytes",
buf: []byte{},
options: Options{},
},
{
desc: "too short options bytes",
buf: []byte{0},
err: ErrInvalidOptions,
},
{
desc: "zero code, zero length option bytes",
buf: []byte{0, 0, 0, 0},
options: Options{
0: [][]byte{{}},
},
},
{
desc: "zero code, zero length option bytes with trailing byte",
buf: []byte{0, 0, 0, 0, 1},
err: ErrInvalidOptions,
},
{
desc: "zero code, length 3, incorrect length for data",
buf: []byte{0, 0, 0, 3, 1, 2},
err: ErrInvalidOptions,
},
{
desc: "Rapid Commit, length 0",
buf: []byte{0, 14, 0, 0},
options: Options{
OptionRapidCommit: [][]byte{{}},
},
},
{
desc: "client ID, length 1, value [1]",
buf: []byte{0, 1, 0, 1, 1},
options: Options{
OptionClientID: [][]byte{{1}},
},
},
{
desc: "client ID, length 2, value [1 1] + server ID, length 3, value [1 2 3]",
buf: []byte{
0, 1, 0, 2, 1, 1,
0, 2, 0, 3, 1, 2, 3,
},
options: Options{
OptionClientID: [][]byte{{1, 1}},
OptionServerID: [][]byte{{1, 2, 3}},
},
},
}
for i, tt := range tests {
var options Options
err := (&options).UnmarshalBinary(tt.buf)
if err != nil {
if want, got := tt.err, err; want != got {
t.Errorf("[%02d] test %q, unexpected error for parseOptions(%v): %v != %v",
i, tt.desc, tt.buf, want, got)
}
continue
}
if want, got := tt.options, options; !reflect.DeepEqual(want, got) {
t.Errorf("[%02d] test %q, unexpected Options map for parseOptions(%v):\n- want: %v\n- got: %v",
i, tt.desc, tt.buf, want, got)
}
for k, v := range tt.options {
for ii := range v {
if want, got := cap(v[ii]), cap(options[k][ii]); want != got {
t.Errorf("[%02d] test %q, option %d, unexpected capacity option data:\n- want: %v\n- got: %v",
i, tt.desc, ii, want, got)
}
}
}
}
}
|
