docker/integration-cli/docker_cli_links_test.go

180 строки
5.5 KiB
Go
Исходник Обычный вид История

package main
import (
"io/ioutil"
"os"
"os/exec"
"strings"
"testing"
"github.com/docker/docker/pkg/iptables"
)
func TestLinksEtcHostsRegularFile(t *testing.T) {
runCmd := exec.Command(dockerBinary, "run", "--net=host", "busybox", "ls", "-la", "/etc/hosts")
out, _, _, err := runCommandWithStdoutStderr(runCmd)
if err != nil {
t.Fatal(out, err)
}
if !strings.HasPrefix(out, "-") {
t.Errorf("/etc/hosts should be a regular file")
}
deleteAllContainers()
logDone("link - /etc/hosts is a regular file")
}
func TestLinksEtcHostsContentMatch(t *testing.T) {
runCmd := exec.Command(dockerBinary, "run", "--net=host", "busybox", "cat", "/etc/hosts")
out, _, _, err := runCommandWithStdoutStderr(runCmd)
if err != nil {
t.Fatal(out, err)
}
hosts, err := ioutil.ReadFile("/etc/hosts")
if os.IsNotExist(err) {
t.Skip("/etc/hosts does not exist, skip this test")
}
if out != string(hosts) {
t.Errorf("container")
}
deleteAllContainers()
logDone("link - /etc/hosts matches hosts copy")
}
func TestLinksPingUnlinkedContainers(t *testing.T) {
runCmd := exec.Command(dockerBinary, "run", "--rm", "busybox", "sh", "-c", "ping -c 1 alias1 -W 1 && ping -c 1 alias2 -W 1")
exitCode, err := runCommand(runCmd)
if exitCode == 0 {
t.Fatal("run ping did not fail")
} else if exitCode != 1 {
t.Fatalf("run ping failed with errors: %v", err)
}
logDone("links - ping unlinked container")
}
func TestLinksPingLinkedContainers(t *testing.T) {
var out string
out, _, _ = dockerCmd(t, "run", "-d", "--name", "container1", "busybox", "sleep", "10")
idA := stripTrailingCharacters(out)
out, _, _ = dockerCmd(t, "run", "-d", "--name", "container2", "busybox", "sleep", "10")
idB := stripTrailingCharacters(out)
dockerCmd(t, "run", "--rm", "--link", "container1:alias1", "--link", "container2:alias2", "busybox", "sh", "-c", "ping -c 1 alias1 -W 1 && ping -c 1 alias2 -W 1")
dockerCmd(t, "kill", idA)
dockerCmd(t, "kill", idB)
deleteAllContainers()
logDone("links - ping linked container")
}
func TestLinksIpTablesRulesWhenLinkAndUnlink(t *testing.T) {
dockerCmd(t, "run", "-d", "--name", "child", "--publish", "8080:80", "busybox", "sleep", "10")
dockerCmd(t, "run", "-d", "--name", "parent", "--link", "child:http", "busybox", "sleep", "10")
childIP := findContainerIP(t, "child")
parentIP := findContainerIP(t, "parent")
sourceRule := []string{"FORWARD", "-i", "docker0", "-o", "docker0", "-p", "tcp", "-s", childIP, "--sport", "80", "-d", parentIP, "-j", "ACCEPT"}
destinationRule := []string{"FORWARD", "-i", "docker0", "-o", "docker0", "-p", "tcp", "-s", parentIP, "--dport", "80", "-d", childIP, "-j", "ACCEPT"}
if !iptables.Exists(sourceRule...) || !iptables.Exists(destinationRule...) {
t.Fatal("Iptables rules not found")
}
dockerCmd(t, "rm", "--link", "parent/http")
if iptables.Exists(sourceRule...) || iptables.Exists(destinationRule...) {
t.Fatal("Iptables rules should be removed when unlink")
}
dockerCmd(t, "kill", "child")
dockerCmd(t, "kill", "parent")
deleteAllContainers()
logDone("link - verify iptables when link and unlink")
}
func TestLinksInspectLinksStarted(t *testing.T) {
var (
expected = map[string]struct{}{"/container1:/testinspectlink/alias1": {}, "/container2:/testinspectlink/alias2": {}}
result []string
)
defer deleteAllContainers()
dockerCmd(t, "run", "-d", "--name", "container1", "busybox", "sleep", "10")
dockerCmd(t, "run", "-d", "--name", "container2", "busybox", "sleep", "10")
dockerCmd(t, "run", "-d", "--name", "testinspectlink", "--link", "container1:alias1", "--link", "container2:alias2", "busybox", "sleep", "10")
links, err := inspectFieldJSON("testinspectlink", "HostConfig.Links")
if err != nil {
t.Fatal(err)
}
err = unmarshalJSON([]byte(links), &result)
if err != nil {
t.Fatal(err)
}
output := convertSliceOfStringsToMap(result)
equal := deepEqual(expected, output)
if !equal {
t.Fatalf("Links %s, expected %s", result, expected)
}
logDone("link - links in started container inspect")
}
func TestLinksInspectLinksStopped(t *testing.T) {
var (
expected = map[string]struct{}{"/container1:/testinspectlink/alias1": {}, "/container2:/testinspectlink/alias2": {}}
result []string
)
defer deleteAllContainers()
dockerCmd(t, "run", "-d", "--name", "container1", "busybox", "sleep", "10")
dockerCmd(t, "run", "-d", "--name", "container2", "busybox", "sleep", "10")
dockerCmd(t, "run", "-d", "--name", "testinspectlink", "--link", "container1:alias1", "--link", "container2:alias2", "busybox", "true")
links, err := inspectFieldJSON("testinspectlink", "HostConfig.Links")
if err != nil {
t.Fatal(err)
}
err = unmarshalJSON([]byte(links), &result)
if err != nil {
t.Fatal(err)
}
output := convertSliceOfStringsToMap(result)
equal := deepEqual(expected, output)
if !equal {
t.Fatalf("Links %s, but expected %s", result, expected)
}
logDone("link - links in stopped container inspect")
}
func TestLinksNotStartedParentNotFail(t *testing.T) {
defer deleteAllContainers()
runCmd := exec.Command(dockerBinary, "create", "--name=first", "busybox", "top")
out, _, _, err := runCommandWithStdoutStderr(runCmd)
if err != nil {
t.Fatal(out, err)
}
runCmd = exec.Command(dockerBinary, "create", "--name=second", "--link=first:first", "busybox", "top")
out, _, _, err = runCommandWithStdoutStderr(runCmd)
if err != nil {
t.Fatal(out, err)
}
runCmd = exec.Command(dockerBinary, "start", "first")
out, _, _, err = runCommandWithStdoutStderr(runCmd)
if err != nil {
t.Fatal(out, err)
}
logDone("link - container start not failing on updating stopped parent links")
}