mirror of https://github.com/k3s-io/k3s
109 lines
2.7 KiB
Go
109 lines
2.7 KiB
Go
/*
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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 hairpin
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import (
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"errors"
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"fmt"
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"net"
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"os"
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"strings"
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"testing"
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"k8s.io/kubernetes/pkg/util/exec"
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)
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func TestFindPairInterfaceOfContainerInterface(t *testing.T) {
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// there should be at least "lo" on any system
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interfaces, _ := net.Interfaces()
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validOutput := fmt.Sprintf("garbage\n peer_ifindex: %d", interfaces[0].Index)
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invalidOutput := fmt.Sprintf("garbage\n unknown: %d", interfaces[0].Index)
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tests := []struct {
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output string
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err error
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expectedName string
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expectErr bool
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}{
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{
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output: validOutput,
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expectedName: interfaces[0].Name,
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},
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{
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output: invalidOutput,
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expectErr: true,
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},
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{
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output: validOutput,
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err: errors.New("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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LookPathFunc: func(file string) (string, error) {
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return fmt.Sprintf("/fake-bin/%s", file), nil
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},
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}
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nsenterArgs := []string{"-t", "123", "-n"}
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name, err := findPairInterfaceOfContainerInterface(&fexec, "eth0", "123", nsenterArgs)
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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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}
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if name != test.expectedName {
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t.Errorf("unexpected name: %s (expected: %s)", name, test.expectedName)
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}
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}
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}
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func TestSetUpInterfaceNonExistent(t *testing.T) {
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err := setUpInterface("non-existent")
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if err == nil {
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t.Errorf("unexpected non-error")
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}
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deviceDir := fmt.Sprintf("%s/%s", sysfsNetPath, "non-existent")
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if !strings.Contains(fmt.Sprintf("%v", err), deviceDir) {
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t.Errorf("should have tried to open %s", deviceDir)
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}
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}
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func TestSetUpInterfaceNotBridged(t *testing.T) {
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err := setUpInterface("lo")
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if err != nil {
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if os.IsNotExist(err) {
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t.Skipf("'lo' device does not exist??? (%v)", err)
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}
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t.Errorf("unexpected error: %v", err)
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}
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}
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