kilo/pkg/route/route_test.go

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2019-01-18 01:50:10 +00:00
// Copyright 2019 the Kilo authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package route
import (
"errors"
"net"
"testing"
"github.com/vishvananda/netlink"
)
func TestSet(t *testing.T) {
_, c1, err := net.ParseCIDR("10.2.0.0/24")
if err != nil {
t.Fatalf("failed to parse CIDR: %v", err)
}
_, c2, err := net.ParseCIDR("10.1.0.0/24")
if err != nil {
t.Fatalf("failed to parse CIDR: %v", err)
}
add := func(backend map[string]*netlink.Route) func(*netlink.Route) error {
return func(r *netlink.Route) error {
backend[routeToString(r)] = r
return nil
}
}
del := func(backend map[string]*netlink.Route) func(*netlink.Route) error {
return func(r *netlink.Route) error {
delete(backend, routeToString(r))
return nil
}
}
adderr := func(backend map[string]*netlink.Route) func(*netlink.Route) error {
return func(r *netlink.Route) error {
return errors.New(routeToString(r))
}
}
for _, tc := range []struct {
name string
routes []*netlink.Route
err bool
add func(map[string]*netlink.Route) func(*netlink.Route) error
del func(map[string]*netlink.Route) func(*netlink.Route) error
}{
{
name: "empty",
routes: nil,
err: false,
add: add,
del: del,
},
{
name: "single",
routes: []*netlink.Route{
{
Dst: c1,
Gw: net.ParseIP("10.1.0.1"),
},
},
err: false,
add: add,
del: del,
},
{
name: "multiple",
routes: []*netlink.Route{
{
Dst: c1,
Gw: net.ParseIP("10.1.0.1"),
},
{
Dst: c2,
Gw: net.ParseIP("127.0.0.1"),
},
},
err: false,
add: add,
del: del,
},
{
name: "err empty",
routes: nil,
err: false,
add: adderr,
del: del,
},
{
name: "err",
routes: []*netlink.Route{
{
Dst: c1,
Gw: net.ParseIP("10.1.0.1"),
},
{
Dst: c2,
Gw: net.ParseIP("127.0.0.1"),
},
},
err: true,
add: adderr,
del: del,
},
} {
backend := make(map[string]*netlink.Route)
a := tc.add(backend)
d := tc.del(backend)
table := NewTable()
table.add = a
table.del = d
if err := table.Set(tc.routes); (err != nil) != tc.err {
no := "no"
if tc.err {
no = "an"
}
t.Errorf("test case %q: got unexpected result: expected %s error, got %v", tc.name, no, err)
}
// If no error was expected, then compare the backend to the input.
if !tc.err {
for _, r := range tc.routes {
r1 := backend[routeToString(r)]
r2 := table.routes[routeToString(r)]
if r != r1 || r != r2 {
t.Errorf("test case %q: expected all routes to be equal: expected %v, got %v and %v", tc.name, r, r1, r2)
}
}
}
}
}
func TestCleanUp(t *testing.T) {
_, c1, err := net.ParseCIDR("10.2.0.0/24")
if err != nil {
t.Fatalf("failed to parse CIDR: %v", err)
}
_, c2, err := net.ParseCIDR("10.1.0.0/24")
if err != nil {
t.Fatalf("failed to parse CIDR: %v", err)
}
add := func(backend map[string]*netlink.Route) func(*netlink.Route) error {
return func(r *netlink.Route) error {
backend[routeToString(r)] = r
return nil
}
}
del := func(backend map[string]*netlink.Route) func(*netlink.Route) error {
return func(r *netlink.Route) error {
delete(backend, routeToString(r))
return nil
}
}
delerr := func(backend map[string]*netlink.Route) func(*netlink.Route) error {
return func(r *netlink.Route) error {
return errors.New(routeToString(r))
}
}
for _, tc := range []struct {
name string
routes []*netlink.Route
err bool
add func(map[string]*netlink.Route) func(*netlink.Route) error
del func(map[string]*netlink.Route) func(*netlink.Route) error
}{
{
name: "empty",
routes: nil,
err: false,
add: add,
del: del,
},
{
name: "single",
routes: []*netlink.Route{
{
Dst: c1,
Gw: net.ParseIP("10.1.0.1"),
},
},
err: false,
add: add,
del: del,
},
{
name: "multiple",
routes: []*netlink.Route{
{
Dst: c1,
Gw: net.ParseIP("10.1.0.1"),
},
{
Dst: c2,
Gw: net.ParseIP("127.0.0.1"),
},
},
err: false,
add: add,
del: del,
},
{
name: "err empty",
routes: nil,
err: false,
add: add,
del: delerr,
},
{
name: "err",
routes: []*netlink.Route{
{
Dst: c1,
Gw: net.ParseIP("10.1.0.1"),
},
{
Dst: c2,
Gw: net.ParseIP("127.0.0.1"),
},
},
err: true,
add: add,
del: delerr,
},
} {
backend := make(map[string]*netlink.Route)
a := tc.add(backend)
d := tc.del(backend)
table := NewTable()
table.add = a
table.del = d
if err := table.Set(tc.routes); err != nil {
t.Fatalf("test case %q: Set should not fail: %v", tc.name, err)
}
if err := table.CleanUp(); (err != nil) != tc.err {
no := "no"
if tc.err {
no = "an"
}
t.Errorf("test case %q: got unexpected result: expected %s error, got %v", tc.name, no, err)
}
// If no error was expected, then compare the backend to the input.
if !tc.err {
for _, r := range tc.routes {
r1 := backend[routeToString(r)]
r2 := table.routes[routeToString(r)]
if r1 != nil || r2 != nil {
t.Errorf("test case %q: expected all routes to be nil: expected got %v and %v", tc.name, r1, r2)
}
}
}
}
}