634 lines
17 KiB
Go
634 lines
17 KiB
Go
// +build linux
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/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package bandwidth
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import (
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"errors"
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"reflect"
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"strings"
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"testing"
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"k8s.io/kubernetes/pkg/api/resource"
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"k8s.io/kubernetes/pkg/util/exec"
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)
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var tcClassOutput = `class htb 1:1 root prio 0 rate 10000bit ceil 10000bit burst 1600b cburst 1600b
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class htb 1:2 root prio 0 rate 10000bit ceil 10000bit burst 1600b cburst 1600b
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class htb 1:3 root prio 0 rate 10000bit ceil 10000bit burst 1600b cburst 1600b
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class htb 1:4 root prio 0 rate 10000bit ceil 10000bit burst 1600b cburst 1600b
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`
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var tcClassOutput2 = `class htb 1:1 root prio 0 rate 10000bit ceil 10000bit burst 1600b cburst 1600b
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class htb 1:2 root prio 0 rate 10000bit ceil 10000bit burst 1600b cburst 1600b
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class htb 1:3 root prio 0 rate 10000bit ceil 10000bit burst 1600b cburst 1600b
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class htb 1:4 root prio 0 rate 10000bit ceil 10000bit burst 1600b cburst 1600b
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class htb 1:5 root prio 0 rate 10000bit ceil 10000bit burst 1600b cburst 1600b
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`
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func TestNextClassID(t *testing.T) {
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tests := []struct {
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output string
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expectErr bool
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expected int
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err error
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}{
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{
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output: tcClassOutput,
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expected: 5,
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},
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{
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output: "\n",
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expected: 1,
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},
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{
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expected: -1,
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expectErr: true,
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err: errors.New("test error"),
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},
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}
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for _, test := range tests {
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fcmd := exec.FakeCmd{
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CombinedOutputScript: []exec.FakeCombinedOutputAction{
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func() ([]byte, error) { return []byte(test.output), test.err },
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},
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}
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fexec := exec.FakeExec{
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CommandScript: []exec.FakeCommandAction{
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func(cmd string, args ...string) exec.Cmd {
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return exec.InitFakeCmd(&fcmd, cmd, args...)
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},
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},
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}
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shaper := &tcShaper{e: &fexec}
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class, err := shaper.nextClassID()
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if test.expectErr {
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if err == nil {
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t.Errorf("unexpected non-error")
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}
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} else {
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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if class != test.expected {
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t.Errorf("expected: %d, found %d", test.expected, class)
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}
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}
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}
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}
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func TestHexCIDR(t *testing.T) {
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tests := []struct {
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input string
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output string
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expectErr bool
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}{
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{
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input: "1.2.0.0/16",
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output: "01020000/ffff0000",
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},
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{
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input: "172.17.0.2/32",
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output: "ac110002/ffffffff",
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},
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{
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input: "foo",
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expectErr: true,
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},
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}
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for _, test := range tests {
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output, err := hexCIDR(test.input)
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if test.expectErr {
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if err == nil {
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t.Error("unexpected non-error")
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}
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} else {
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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if output != test.output {
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t.Errorf("expected: %s, saw: %s", test.output, output)
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}
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input, err := asciiCIDR(output)
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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if input != test.input {
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t.Errorf("expected: %s, saw: %s", test.input, input)
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}
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}
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}
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}
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var tcFilterOutput = `filter parent 1: protocol ip pref 1 u32
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filter parent 1: protocol ip pref 1 u32 fh 800: ht divisor 1
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filter parent 1: protocol ip pref 1 u32 fh 800::800 order 2048 key ht 800 bkt 0 flowid 1:1
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match ac110002/ffffffff at 16
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filter parent 1: protocol ip pref 1 u32 fh 800::801 order 2049 key ht 800 bkt 0 flowid 1:2
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match 01020000/ffff0000 at 16
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`
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func TestFindCIDRClass(t *testing.T) {
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tests := []struct {
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cidr string
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output string
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expectErr bool
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expectNotFound bool
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expectedClass string
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expectedHandle string
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err error
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}{
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{
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cidr: "172.17.0.2/32",
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output: tcFilterOutput,
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expectedClass: "1:1",
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expectedHandle: "800::800",
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},
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{
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cidr: "1.2.3.4/16",
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output: tcFilterOutput,
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expectedClass: "1:2",
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expectedHandle: "800::801",
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},
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{
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cidr: "2.2.3.4/16",
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output: tcFilterOutput,
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expectNotFound: true,
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},
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{
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err: errors.New("test error"),
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expectErr: true,
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},
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}
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for _, test := range tests {
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fcmd := exec.FakeCmd{
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CombinedOutputScript: []exec.FakeCombinedOutputAction{
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func() ([]byte, error) { return []byte(test.output), test.err },
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},
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}
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fexec := exec.FakeExec{
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CommandScript: []exec.FakeCommandAction{
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func(cmd string, args ...string) exec.Cmd {
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return exec.InitFakeCmd(&fcmd, cmd, args...)
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},
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},
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}
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shaper := &tcShaper{e: &fexec}
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class, handle, found, err := shaper.findCIDRClass(test.cidr)
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if test.expectErr {
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if err == nil {
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t.Errorf("unexpected non-error")
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}
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} else {
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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if test.expectNotFound {
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if found {
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t.Errorf("unexpectedly found an interface: %s %s", class, handle)
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}
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} else {
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if class != test.expectedClass {
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t.Errorf("expected: %s, found %s", test.expectedClass, class)
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}
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if handle != test.expectedHandle {
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t.Errorf("expected: %s, found %s", test.expectedHandle, handle)
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}
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}
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}
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}
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}
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func TestGetCIDRs(t *testing.T) {
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fcmd := exec.FakeCmd{
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CombinedOutputScript: []exec.FakeCombinedOutputAction{
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func() ([]byte, error) { return []byte(tcFilterOutput), nil },
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},
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}
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fexec := exec.FakeExec{
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CommandScript: []exec.FakeCommandAction{
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func(cmd string, args ...string) exec.Cmd {
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return exec.InitFakeCmd(&fcmd, cmd, args...)
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},
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},
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}
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shaper := &tcShaper{e: &fexec}
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cidrs, err := shaper.GetCIDRs()
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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expectedCidrs := []string{"172.17.0.2/32", "1.2.0.0/16"}
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if !reflect.DeepEqual(cidrs, expectedCidrs) {
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t.Errorf("expected: %v, saw: %v", expectedCidrs, cidrs)
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}
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}
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func TestLimit(t *testing.T) {
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tests := []struct {
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cidr string
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ingress *resource.Quantity
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egress *resource.Quantity
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expectErr bool
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expectedCalls int
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err error
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}{
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{
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cidr: "1.2.3.4/32",
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ingress: resource.NewQuantity(10, resource.DecimalSI),
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egress: resource.NewQuantity(20, resource.DecimalSI),
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expectedCalls: 6,
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},
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{
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cidr: "1.2.3.4/32",
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ingress: resource.NewQuantity(10, resource.DecimalSI),
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egress: nil,
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expectedCalls: 3,
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},
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{
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cidr: "1.2.3.4/32",
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ingress: nil,
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egress: resource.NewQuantity(20, resource.DecimalSI),
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expectedCalls: 3,
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},
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{
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cidr: "1.2.3.4/32",
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ingress: nil,
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egress: nil,
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expectedCalls: 0,
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},
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{
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err: errors.New("test error"),
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ingress: resource.NewQuantity(10, resource.DecimalSI),
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egress: resource.NewQuantity(20, resource.DecimalSI),
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expectErr: true,
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},
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}
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for _, test := range tests {
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fcmd := exec.FakeCmd{
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CombinedOutputScript: []exec.FakeCombinedOutputAction{
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func() ([]byte, error) { return []byte(tcClassOutput), test.err },
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func() ([]byte, error) { return []byte{}, test.err },
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func() ([]byte, error) { return []byte{}, test.err },
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func() ([]byte, error) { return []byte(tcClassOutput2), test.err },
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func() ([]byte, error) { return []byte{}, test.err },
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func() ([]byte, error) { return []byte{}, test.err },
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},
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}
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fexec := exec.FakeExec{
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CommandScript: []exec.FakeCommandAction{
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func(cmd string, args ...string) exec.Cmd { return exec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) exec.Cmd { return exec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) exec.Cmd { return exec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) exec.Cmd { return exec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) exec.Cmd { return exec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) exec.Cmd { return exec.InitFakeCmd(&fcmd, cmd, args...) },
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},
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}
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iface := "cbr0"
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shaper := &tcShaper{e: &fexec, iface: iface}
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if err := shaper.Limit(test.cidr, test.ingress, test.egress); err != nil && !test.expectErr {
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t.Errorf("unexpected error: %v", err)
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return
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} else if err == nil && test.expectErr {
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t.Error("unexpected non-error")
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return
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}
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// No more testing in the error case
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if test.expectErr {
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if fcmd.CombinedOutputCalls != 1 {
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t.Errorf("unexpected number of calls: %d, expected: 1", fcmd.CombinedOutputCalls)
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}
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return
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}
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if fcmd.CombinedOutputCalls != test.expectedCalls {
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t.Errorf("unexpected number of calls: %d, expected: %d", fcmd.CombinedOutputCalls, test.expectedCalls)
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}
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for ix := range fcmd.CombinedOutputLog {
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output := fcmd.CombinedOutputLog[ix]
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if output[0] != "tc" {
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t.Errorf("unexpected command: %s, expected tc", output[0])
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}
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if output[4] != iface {
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t.Errorf("unexpected interface: %s, expected %s (%v)", output[4], iface, output)
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}
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if ix == 1 {
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var expectedRate string
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if test.ingress != nil {
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expectedRate = makeKBitString(test.ingress)
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} else {
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expectedRate = makeKBitString(test.egress)
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}
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if output[11] != expectedRate {
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t.Errorf("unexpected ingress: %s, expected: %s", output[11], expectedRate)
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}
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if output[8] != "1:5" {
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t.Errorf("unexpected class: %s, expected: %s", output[8], "1:5")
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}
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}
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if ix == 2 {
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if output[15] != test.cidr {
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t.Errorf("unexpected cidr: %s, expected: %s", output[15], test.cidr)
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}
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if output[17] != "1:5" {
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t.Errorf("unexpected class: %s, expected: %s", output[17], "1:5")
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}
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}
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if ix == 4 {
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if output[11] != makeKBitString(test.egress) {
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t.Errorf("unexpected egress: %s, expected: %s", output[11], makeKBitString(test.egress))
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}
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if output[8] != "1:6" {
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t.Errorf("unexpected class: %s, expected: %s", output[8], "1:6")
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}
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}
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if ix == 5 {
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if output[15] != test.cidr {
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t.Errorf("unexpected cidr: %s, expected: %s", output[15], test.cidr)
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}
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if output[17] != "1:6" {
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t.Errorf("unexpected class: %s, expected: %s", output[17], "1:5")
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}
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}
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}
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}
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}
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func TestReset(t *testing.T) {
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tests := []struct {
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cidr string
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err error
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expectErr bool
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expectedHandle string
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expectedClass string
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}{
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{
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cidr: "1.2.3.4/16",
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expectedHandle: "800::801",
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expectedClass: "1:2",
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},
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{
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cidr: "172.17.0.2/32",
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expectedHandle: "800::800",
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expectedClass: "1:1",
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},
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{
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err: errors.New("test error"),
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expectErr: true,
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},
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}
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for _, test := range tests {
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fcmd := exec.FakeCmd{
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CombinedOutputScript: []exec.FakeCombinedOutputAction{
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func() ([]byte, error) { return []byte(tcFilterOutput), test.err },
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func() ([]byte, error) { return []byte{}, test.err },
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func() ([]byte, error) { return []byte{}, test.err },
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},
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}
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fexec := exec.FakeExec{
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CommandScript: []exec.FakeCommandAction{
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func(cmd string, args ...string) exec.Cmd { return exec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) exec.Cmd { return exec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) exec.Cmd { return exec.InitFakeCmd(&fcmd, cmd, args...) },
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},
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}
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iface := "cbr0"
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shaper := &tcShaper{e: &fexec, iface: iface}
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if err := shaper.Reset(test.cidr); err != nil && !test.expectErr {
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t.Errorf("unexpected error: %v", err)
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return
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} else if test.expectErr && err == nil {
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t.Error("unexpected non-error")
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return
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}
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// No more testing in the error case
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if test.expectErr {
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if fcmd.CombinedOutputCalls != 1 {
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t.Errorf("unexpected number of calls: %d, expected: 1", fcmd.CombinedOutputCalls)
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}
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return
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}
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if fcmd.CombinedOutputCalls != 3 {
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t.Errorf("unexpected number of calls: %d, expected: 3", fcmd.CombinedOutputCalls)
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}
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for ix := range fcmd.CombinedOutputLog {
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output := fcmd.CombinedOutputLog[ix]
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if output[0] != "tc" {
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t.Errorf("unexpected command: %s, expected tc", output[0])
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}
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if output[4] != iface {
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t.Errorf("unexpected interface: %s, expected %s (%v)", output[4], iface, output)
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}
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if ix == 1 && output[12] != test.expectedHandle {
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t.Errorf("unexpected handle: %s, expected: %s", output[12], test.expectedHandle)
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}
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if ix == 2 && output[8] != test.expectedClass {
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t.Errorf("unexpected class: %s, expected: %s", output[8], test.expectedClass)
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}
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}
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}
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}
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var tcQdisc = "qdisc htb 1: root refcnt 2 r2q 10 default 30 direct_packets_stat 0\n"
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func TestReconcileInterfaceExists(t *testing.T) {
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fcmd := exec.FakeCmd{
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CombinedOutputScript: []exec.FakeCombinedOutputAction{
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func() ([]byte, error) { return []byte(tcQdisc), nil },
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},
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}
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fexec := exec.FakeExec{
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CommandScript: []exec.FakeCommandAction{
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func(cmd string, args ...string) exec.Cmd { return exec.InitFakeCmd(&fcmd, cmd, args...) },
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},
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}
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iface := "cbr0"
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shaper := &tcShaper{e: &fexec, iface: iface}
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err := shaper.ReconcileInterface()
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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if fcmd.CombinedOutputCalls != 1 {
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t.Errorf("unexpected number of calls: %d", fcmd.CombinedOutputCalls)
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}
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output := fcmd.CombinedOutputLog[0]
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if len(output) != 5 {
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t.Errorf("unexpected command: %v", output)
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}
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if output[0] != "tc" {
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t.Errorf("unexpected command: %s", output[0])
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}
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if output[4] != iface {
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t.Errorf("unexpected interface: %s, expected %s", output[4], iface)
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}
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if output[2] != "show" {
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t.Errorf("unexpected action: %s", output[2])
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}
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}
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func testReconcileInterfaceHasNoData(t *testing.T, output string) {
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fcmd := exec.FakeCmd{
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CombinedOutputScript: []exec.FakeCombinedOutputAction{
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func() ([]byte, error) { return []byte(output), nil },
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func() ([]byte, error) { return []byte(output), nil },
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},
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}
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fexec := exec.FakeExec{
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CommandScript: []exec.FakeCommandAction{
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func(cmd string, args ...string) exec.Cmd { return exec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) exec.Cmd { return exec.InitFakeCmd(&fcmd, cmd, args...) },
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},
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}
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iface := "cbr0"
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|
shaper := &tcShaper{e: &fexec, iface: iface}
|
|
err := shaper.ReconcileInterface()
|
|
if err != nil {
|
|
t.Errorf("unexpected error: %v", err)
|
|
}
|
|
|
|
if fcmd.CombinedOutputCalls != 2 {
|
|
t.Errorf("unexpected number of calls: %d", fcmd.CombinedOutputCalls)
|
|
}
|
|
|
|
for ix, output := range fcmd.CombinedOutputLog {
|
|
if output[0] != "tc" {
|
|
t.Errorf("unexpected command: %s", output[0])
|
|
}
|
|
if output[4] != iface {
|
|
t.Errorf("unexpected interface: %s, expected %s", output[4], iface)
|
|
}
|
|
if ix == 0 {
|
|
if len(output) != 5 {
|
|
t.Errorf("unexpected command: %v", output)
|
|
}
|
|
if output[2] != "show" {
|
|
t.Errorf("unexpected action: %s", output[2])
|
|
}
|
|
}
|
|
if ix == 1 {
|
|
if len(output) != 11 {
|
|
t.Errorf("unexpected command: %v", output)
|
|
}
|
|
if output[2] != "add" {
|
|
t.Errorf("unexpected action: %s", output[2])
|
|
}
|
|
if output[7] != "1:" {
|
|
t.Errorf("unexpected root class: %s", output[7])
|
|
}
|
|
if output[8] != "htb" {
|
|
t.Errorf("unexpected qdisc algo: %s", output[8])
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestReconcileInterfaceDoesntExist(t *testing.T) {
|
|
testReconcileInterfaceHasNoData(t, "\n")
|
|
}
|
|
|
|
var tcQdiscNoqueue = "qdisc noqueue 0: root refcnt 2 \n"
|
|
|
|
func TestReconcileInterfaceExistsWithNoqueue(t *testing.T) {
|
|
testReconcileInterfaceHasNoData(t, tcQdiscNoqueue)
|
|
}
|
|
|
|
var tcQdiscWrong = []string{
|
|
"qdisc htb 2: root refcnt 2 r2q 10 default 30 direct_packets_stat 0\n",
|
|
"qdisc foo 1: root refcnt 2 r2q 10 default 30 direct_packets_stat 0\n",
|
|
}
|
|
|
|
func TestReconcileInterfaceIsWrong(t *testing.T) {
|
|
for _, test := range tcQdiscWrong {
|
|
fcmd := exec.FakeCmd{
|
|
CombinedOutputScript: []exec.FakeCombinedOutputAction{
|
|
func() ([]byte, error) { return []byte(test), nil },
|
|
func() ([]byte, error) { return []byte("\n"), nil },
|
|
func() ([]byte, error) { return []byte("\n"), nil },
|
|
},
|
|
}
|
|
|
|
fexec := exec.FakeExec{
|
|
CommandScript: []exec.FakeCommandAction{
|
|
func(cmd string, args ...string) exec.Cmd { return exec.InitFakeCmd(&fcmd, cmd, args...) },
|
|
func(cmd string, args ...string) exec.Cmd { return exec.InitFakeCmd(&fcmd, cmd, args...) },
|
|
func(cmd string, args ...string) exec.Cmd { return exec.InitFakeCmd(&fcmd, cmd, args...) },
|
|
},
|
|
}
|
|
iface := "cbr0"
|
|
shaper := &tcShaper{e: &fexec, iface: iface}
|
|
err := shaper.ReconcileInterface()
|
|
if err != nil {
|
|
t.Errorf("unexpected error: %v", err)
|
|
}
|
|
|
|
if fcmd.CombinedOutputCalls != 3 {
|
|
t.Errorf("unexpected number of calls: %d", fcmd.CombinedOutputCalls)
|
|
}
|
|
|
|
for ix, output := range fcmd.CombinedOutputLog {
|
|
if output[0] != "tc" {
|
|
t.Errorf("unexpected command: %s", output[0])
|
|
}
|
|
if output[4] != iface {
|
|
t.Errorf("unexpected interface: %s, expected %s", output[4], iface)
|
|
}
|
|
if ix == 0 {
|
|
if len(output) != 5 {
|
|
t.Errorf("unexpected command: %v", output)
|
|
}
|
|
if output[2] != "show" {
|
|
t.Errorf("unexpected action: %s", output[2])
|
|
}
|
|
}
|
|
if ix == 1 {
|
|
if len(output) != 8 {
|
|
t.Errorf("unexpected command: %v", output)
|
|
}
|
|
if output[2] != "delete" {
|
|
t.Errorf("unexpected action: %s", output[2])
|
|
}
|
|
if output[7] != strings.Split(test, " ")[2] {
|
|
t.Errorf("unexpected class: %s, expected: %s", output[7], strings.Split(test, " ")[2])
|
|
}
|
|
}
|
|
if ix == 2 {
|
|
if len(output) != 11 {
|
|
t.Errorf("unexpected command: %v", output)
|
|
}
|
|
if output[7] != "1:" {
|
|
t.Errorf("unexpected root class: %s", output[7])
|
|
}
|
|
if output[8] != "htb" {
|
|
t.Errorf("unexpected qdisc algo: %s", output[8])
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|