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package server
import (
"testing"
"errors"
"bytes"
"github.com/bio-routing/bio-rd/net"
"github.com/bio-routing/bio-rd/route"
"github.com/stretchr/testify/assert"
)
func TestWithDrawPrefixes(t *testing.T) {
testcases := []struct {
Name string
Prefix []net.Prefix
Expected []byte
ExpectedError error
}{
{
Name: "One withdraw",
Prefix: []net.Prefix{net.NewPfx(1413010532, 24)},
Expected: []byte{
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // BGP Marker
0x00, 0x1b, // BGP Message Length
0x02, // BGP Message Type == Update
0x00, 0x04, // WithDraw Octet length
0x18, // Prefix Length
0x54, 0x38, 0xd4, // Prefix,
0x00, 0x00, // Total Path Attribute Length
},
ExpectedError: nil,
},
{
Name: "two withdraws",
Prefix: []net.Prefix{net.NewPfx(1413010532, 24), net.NewPfx(1413010534, 25)},
Expected: []byte{
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // BGP Marker
0x00, 0x20, // BGP Message Length
0x02, // BGP Message Type == Update
0x00, 0x09, // WithDraw Octet length
0x18, // Prefix Length first
0x54, 0x38, 0xd4, // Prefix,
0x19, // Prefix Length second
0x54, 0x38, 0xd4, 0x66, // Prefix,
0x00, 0x00, // Total Path Attribute Length
},
ExpectedError: nil,
},
}
for _, tc := range testcases {
buf := bytes.NewBuffer([]byte{})
err := withDrawPrefixes(buf, tc.Prefix...)
assert.Equal(t, tc.ExpectedError, err, "error mismatch in testcase %v", tc.Name)
assert.Equal(t, tc.Expected, buf.Bytes(), "expected different bytes in testcase %v", tc.Name)
}
}
func TestWithDrawPrefixesAddPath(t *testing.T) {
testcases := []struct {
Name string
Prefix net.Prefix
Path *route.Path
Expected []byte
ExpectedError error
}{
{
Name: "Normal withdraw",
Prefix: net.NewPfx(1413010532, 24),
Path: &route.Path{
Type: route.BGPPathType,
BGPPath: &route.BGPPath{
PathIdentifier: 1,
},
},
Expected: []byte{
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // BGP Marker
0x00, 0x1f, // BGP Message Length
0x02, // BGP Message Type == Update
0x00, 0x08, // WithDraw Octet length
0x00, 0x00, 0x00, 0x01, // NLRI Path Identifier
0x18, // Prefix Length
0x54, 0x38, 0xd4, // Prefix,
0x00, 0x00, // Total Path Attribute Length
},
ExpectedError: nil,
},
{
Name: "Non bgp withdraw",
Prefix: net.NewPfx(1413010532, 24),
Path: &route.Path{
Type: route.StaticPathType,
},
Expected: []byte{},
ExpectedError: errors.New("wrong path type, expected BGPPathType"),
},
{
Name: "Nil BGPPathType",
Prefix: net.NewPfx(1413010532, 24),
Path: &route.Path{
Type: route.BGPPathType,
},
Expected: []byte{},
ExpectedError: errors.New("got nil BGPPath"),
},
}
for _, tc := range testcases {
buf := bytes.NewBuffer([]byte{})
err := withDrawPrefixesAddPath(buf, tc.Prefix, tc.Path)
assert.Equal(t, tc.ExpectedError, err, "error mismatch in testcase %v", tc.Name)
assert.Equal(t, tc.Expected, buf.Bytes(), "expected different bytes in testcase %v", tc.Name)
}
}