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package packet
import (
"bytes"
"testing"
"github.com/stretchr/testify/assert"
)
func TestDecodeNLRIs(t *testing.T) {
tests := []struct {
name string
input []byte
wantFail bool
expected *NLRI
}{
{
name: "Valid NRLI #1",
input: []byte{
24, 192, 168, 0,
8, 10,
17, 172, 16, 0,
},
wantFail: false,
expected: &NLRI{
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Pfxlen: 17,
},
},
},
},
{
name: "Invalid NRLI #1",
input: []byte{
24, 192, 168, 0,
8, 10,
17, 172, 16,
},
wantFail: true,
},
}
for _, test := range tests {
buf := bytes.NewBuffer(test.input)
res, err := decodeNLRIs(buf, uint16(len(test.input)))
if test.wantFail && err == nil {
t.Errorf("Expected error did not happen for test %q", test.name)
}
if !test.wantFail && err != nil {
t.Errorf("Unexpected failure for test %q: %v", test.name, err)
}
assert.Equal(t, test.expected, res)
}
}
func TestDecodeNLRI(t *testing.T) {
tests := []struct {
name string
input []byte
wantFail bool
expected *NLRI
}{
{
name: "Valid NRLI #1",
input: []byte{
24, 192, 168, 0,
},
wantFail: false,
expected: &NLRI{
Pfxlen: 24,
},
},
{
name: "Valid NRLI #2",
input: []byte{
25, 192, 168, 0, 128,
},
wantFail: false,
expected: &NLRI{
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Pfxlen: 25,
},
},
{
name: "Incomplete NLRI #1",
input: []byte{
25, 192, 168, 0,
},
wantFail: true,
},
{
name: "Incomplete NLRI #2",
input: []byte{
25,
},
wantFail: true,
},
{
name: "Empty input",
input: []byte{},
wantFail: true,
},
}
for _, test := range tests {
buf := bytes.NewBuffer(test.input)
res, _, err := decodeNLRI(buf)
if test.wantFail && err == nil {
t.Errorf("Expected error did not happen for test %q", test.name)
}
if !test.wantFail && err != nil {
t.Errorf("Unexpected failure for test %q: %v", test.name, err)
}
assert.Equal(t, test.expected, res)
}
}
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func TestBytesInAddr(t *testing.T) {
tests := []struct {
name string
input uint8
expected uint8
}{
{
name: "Test #1",
input: 24,
expected: 3,
},
{
name: "Test #2",
input: 25,
expected: 4,
},
{
name: "Test #3",
input: 32,
expected: 4,
},
{
name: "Test #4",
input: 0,
expected: 0,
},
{
name: "Test #5",
input: 9,
expected: 2,
},
}
for _, test := range tests {
if res != test.expected {
t.Errorf("Unexpected result for test %q: %d", test.name, res)
}
}
}
func TestNLRISerialize(t *testing.T) {
tests := []struct {
name string
nlri *NLRI
expected []byte
}{
{
name: "Test #1",
nlri: &NLRI{
Pfxlen: 25,
},
expected: []byte{25, 1, 2, 3, 0},
},
{
name: "Test #2",
nlri: &NLRI{
Pfxlen: 24,
},
expected: []byte{24, 1, 2, 3},
},
{
name: "Test #3",
nlri: &NLRI{
Pfxlen: 17,
},
expected: []byte{17, 100, 200, 128},
},
}
for _, test := range tests {
buf := bytes.NewBuffer(nil)
test.nlri.serialize(buf)
res := buf.Bytes()
assert.Equal(t, test.expected, res)
}
}
func TestNLRIAddPathSerialize(t *testing.T) {
tests := []struct {
name string
PathIdentifier: 100,
IP: strAddr("1.2.3.0"),
Pfxlen: 25,
},
expected: []byte{0, 0, 0, 100, 25, 1, 2, 3, 0},
},
{
name: "Test #2",
PathIdentifier: 100,
IP: strAddr("1.2.3.0"),
Pfxlen: 24,
},
expected: []byte{0, 0, 0, 100, 24, 1, 2, 3},
},
{
name: "Test #3",
PathIdentifier: 100,
IP: strAddr("100.200.128.0"),
Pfxlen: 17,
},
expected: []byte{0, 0, 0, 100, 17, 100, 200, 128},
},
}
for _, test := range tests {
buf := bytes.NewBuffer(nil)
res := buf.Bytes()
assert.Equal(t, test.expected, res)
}
}