08e5f12954
- Registry: Cereate a new registry object for each request (~session)
431 lines
9.5 KiB
Go
431 lines
9.5 KiB
Go
package docker
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import (
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"fmt"
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"github.com/dotcloud/docker/utils"
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"io"
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"io/ioutil"
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"net"
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"os"
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"os/user"
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"sync"
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"testing"
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"time"
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)
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const unitTestImageName string = "docker-ut"
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const unitTestStoreBase string = "/var/lib/docker/unit-tests"
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func nuke(runtime *Runtime) error {
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var wg sync.WaitGroup
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for _, container := range runtime.List() {
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wg.Add(1)
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go func(c *Container) {
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c.Kill()
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wg.Done()
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}(container)
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}
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wg.Wait()
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return os.RemoveAll(runtime.root)
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}
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func layerArchive(tarfile string) (io.Reader, error) {
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// FIXME: need to close f somewhere
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f, err := os.Open(tarfile)
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if err != nil {
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return nil, err
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}
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return f, nil
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}
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func init() {
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// Hack to run sys init during unit testing
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if utils.SelfPath() == "/sbin/init" {
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SysInit()
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return
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}
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if usr, err := user.Current(); err != nil {
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panic(err)
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} else if usr.Uid != "0" {
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panic("docker tests needs to be run as root")
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}
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NetworkBridgeIface = "testdockbr0"
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// Make it our Store root
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runtime, err := NewRuntimeFromDirectory(unitTestStoreBase, false)
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if err != nil {
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panic(err)
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}
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// Create the "Server"
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srv := &Server{
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runtime: runtime,
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}
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// Retrieve the Image
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if err := srv.ImagePull(unitTestImageName, "", "", os.Stdout, false); err != nil {
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panic(err)
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}
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}
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// FIXME: test that ImagePull(json=true) send correct json output
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func newTestRuntime() (*Runtime, error) {
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root, err := ioutil.TempDir("", "docker-test")
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if err != nil {
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return nil, err
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}
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if err := os.Remove(root); err != nil {
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return nil, err
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}
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if err := utils.CopyDirectory(unitTestStoreBase, root); err != nil {
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return nil, err
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}
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runtime, err := NewRuntimeFromDirectory(root, false)
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if err != nil {
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return nil, err
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}
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runtime.UpdateCapabilities(true)
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return runtime, nil
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}
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func GetTestImage(runtime *Runtime) *Image {
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imgs, err := runtime.graph.All()
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if err != nil {
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panic(err)
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} else if len(imgs) < 1 {
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panic("GASP")
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}
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return imgs[0]
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}
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func TestRuntimeCreate(t *testing.T) {
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runtime, err := newTestRuntime()
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if err != nil {
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t.Fatal(err)
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}
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defer nuke(runtime)
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// Make sure we start we 0 containers
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if len(runtime.List()) != 0 {
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t.Errorf("Expected 0 containers, %v found", len(runtime.List()))
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}
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builder := NewBuilder(runtime)
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container, err := builder.Create(&Config{
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Image: GetTestImage(runtime).Id,
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Cmd: []string{"ls", "-al"},
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},
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)
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if err != nil {
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t.Fatal(err)
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}
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defer func() {
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if err := runtime.Destroy(container); err != nil {
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t.Error(err)
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}
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}()
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// Make sure we can find the newly created container with List()
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if len(runtime.List()) != 1 {
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t.Errorf("Expected 1 container, %v found", len(runtime.List()))
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}
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// Make sure the container List() returns is the right one
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if runtime.List()[0].Id != container.Id {
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t.Errorf("Unexpected container %v returned by List", runtime.List()[0])
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}
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// Make sure we can get the container with Get()
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if runtime.Get(container.Id) == nil {
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t.Errorf("Unable to get newly created container")
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}
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// Make sure it is the right container
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if runtime.Get(container.Id) != container {
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t.Errorf("Get() returned the wrong container")
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}
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// Make sure Exists returns it as existing
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if !runtime.Exists(container.Id) {
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t.Errorf("Exists() returned false for a newly created container")
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}
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// Make sure crete with bad parameters returns an error
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_, err = builder.Create(
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&Config{
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Image: GetTestImage(runtime).Id,
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},
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)
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if err == nil {
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t.Fatal("Builder.Create should throw an error when Cmd is missing")
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}
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_, err = builder.Create(
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&Config{
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Image: GetTestImage(runtime).Id,
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Cmd: []string{},
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},
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)
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if err == nil {
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t.Fatal("Builder.Create should throw an error when Cmd is empty")
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}
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}
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func TestDestroy(t *testing.T) {
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runtime, err := newTestRuntime()
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if err != nil {
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t.Fatal(err)
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}
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defer nuke(runtime)
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container, err := NewBuilder(runtime).Create(&Config{
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Image: GetTestImage(runtime).Id,
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Cmd: []string{"ls", "-al"},
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},
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)
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if err != nil {
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t.Fatal(err)
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}
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// Destroy
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if err := runtime.Destroy(container); err != nil {
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t.Error(err)
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}
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// Make sure runtime.Exists() behaves correctly
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if runtime.Exists("test_destroy") {
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t.Errorf("Exists() returned true")
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}
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// Make sure runtime.List() doesn't list the destroyed container
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if len(runtime.List()) != 0 {
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t.Errorf("Expected 0 container, %v found", len(runtime.List()))
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}
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// Make sure runtime.Get() refuses to return the unexisting container
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if runtime.Get(container.Id) != nil {
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t.Errorf("Unable to get newly created container")
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}
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// Make sure the container root directory does not exist anymore
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_, err = os.Stat(container.root)
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if err == nil || !os.IsNotExist(err) {
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t.Errorf("Container root directory still exists after destroy")
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}
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// Test double destroy
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if err := runtime.Destroy(container); err == nil {
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// It should have failed
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t.Errorf("Double destroy did not fail")
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}
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}
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func TestGet(t *testing.T) {
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runtime, err := newTestRuntime()
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if err != nil {
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t.Fatal(err)
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}
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defer nuke(runtime)
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builder := NewBuilder(runtime)
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container1, err := builder.Create(&Config{
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Image: GetTestImage(runtime).Id,
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Cmd: []string{"ls", "-al"},
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},
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)
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if err != nil {
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t.Fatal(err)
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}
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defer runtime.Destroy(container1)
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container2, err := builder.Create(&Config{
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Image: GetTestImage(runtime).Id,
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Cmd: []string{"ls", "-al"},
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},
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)
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if err != nil {
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t.Fatal(err)
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}
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defer runtime.Destroy(container2)
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container3, err := builder.Create(&Config{
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Image: GetTestImage(runtime).Id,
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Cmd: []string{"ls", "-al"},
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},
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)
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if err != nil {
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t.Fatal(err)
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}
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defer runtime.Destroy(container3)
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if runtime.Get(container1.Id) != container1 {
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t.Errorf("Get(test1) returned %v while expecting %v", runtime.Get(container1.Id), container1)
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}
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if runtime.Get(container2.Id) != container2 {
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t.Errorf("Get(test2) returned %v while expecting %v", runtime.Get(container2.Id), container2)
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}
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if runtime.Get(container3.Id) != container3 {
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t.Errorf("Get(test3) returned %v while expecting %v", runtime.Get(container3.Id), container3)
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}
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}
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// Run a container with a TCP port allocated, and test that it can receive connections on localhost
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func TestAllocatePortLocalhost(t *testing.T) {
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runtime, err := newTestRuntime()
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if err != nil {
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t.Fatal(err)
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}
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container, err := NewBuilder(runtime).Create(&Config{
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Image: GetTestImage(runtime).Id,
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Cmd: []string{"sh", "-c", "echo well hello there | nc -l -p 5555"},
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PortSpecs: []string{"5555"},
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},
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)
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if err != nil {
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t.Fatal(err)
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}
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if err := container.Start(); err != nil {
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t.Fatal(err)
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}
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defer container.Kill()
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setTimeout(t, "Waiting for the container to be started timed out", 2*time.Second, func() {
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for {
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if container.State.Running {
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break
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}
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time.Sleep(10 * time.Millisecond)
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}
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})
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conn, err := net.Dial("tcp",
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fmt.Sprintf(
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"localhost:%s", container.NetworkSettings.PortMapping["5555"],
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),
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)
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if err != nil {
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t.Fatal(err)
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}
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defer conn.Close()
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output, err := ioutil.ReadAll(conn)
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if err != nil {
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t.Fatal(err)
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}
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if string(output) != "well hello there\n" {
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t.Fatalf("Received wrong output from network connection: should be '%s', not '%s'",
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"well hello there\n",
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string(output),
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)
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}
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container.Wait()
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}
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func TestRestore(t *testing.T) {
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root, err := ioutil.TempDir("", "docker-test")
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if err != nil {
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t.Fatal(err)
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}
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if err := os.Remove(root); err != nil {
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t.Fatal(err)
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}
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if err := utils.CopyDirectory(unitTestStoreBase, root); err != nil {
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t.Fatal(err)
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}
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runtime1, err := NewRuntimeFromDirectory(root, false)
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if err != nil {
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t.Fatal(err)
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}
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builder := NewBuilder(runtime1)
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// Create a container with one instance of docker
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container1, err := builder.Create(&Config{
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Image: GetTestImage(runtime1).Id,
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Cmd: []string{"ls", "-al"},
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},
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)
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if err != nil {
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t.Fatal(err)
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}
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defer runtime1.Destroy(container1)
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// Create a second container meant to be killed
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container2, err := builder.Create(&Config{
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Image: GetTestImage(runtime1).Id,
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Cmd: []string{"/bin/cat"},
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OpenStdin: true,
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},
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)
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if err != nil {
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t.Fatal(err)
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}
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defer runtime1.Destroy(container2)
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// Start the container non blocking
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if err := container2.Start(); err != nil {
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t.Fatal(err)
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}
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if !container2.State.Running {
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t.Fatalf("Container %v should appear as running but isn't", container2.Id)
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}
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// Simulate a crash/manual quit of dockerd: process dies, states stays 'Running'
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cStdin, _ := container2.StdinPipe()
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cStdin.Close()
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if err := container2.WaitTimeout(2 * time.Second); err != nil {
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t.Fatal(err)
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}
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container2.State.Running = true
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container2.ToDisk()
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if len(runtime1.List()) != 2 {
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t.Errorf("Expected 2 container, %v found", len(runtime1.List()))
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}
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if err := container1.Run(); err != nil {
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t.Fatal(err)
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}
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if !container2.State.Running {
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t.Fatalf("Container %v should appear as running but isn't", container2.Id)
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}
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// Here are are simulating a docker restart - that is, reloading all containers
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// from scratch
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runtime2, err := NewRuntimeFromDirectory(root, false)
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if err != nil {
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t.Fatal(err)
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}
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defer nuke(runtime2)
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if len(runtime2.List()) != 2 {
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t.Errorf("Expected 2 container, %v found", len(runtime2.List()))
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}
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runningCount := 0
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for _, c := range runtime2.List() {
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if c.State.Running {
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t.Errorf("Running container found: %v (%v)", c.Id, c.Path)
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runningCount++
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}
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}
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if runningCount != 0 {
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t.Fatalf("Expected 0 container alive, %d found", runningCount)
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}
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container3 := runtime2.Get(container1.Id)
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if container3 == nil {
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t.Fatal("Unable to Get container")
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}
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if err := container3.Run(); err != nil {
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t.Fatal(err)
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}
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container2.State.Running = false
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}
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