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package image
import (
"fmt"
"io/ioutil"
"os"
"path"
"testing"
"github.com/containers/storage"
"github.com/containers/storage/pkg/reexec"
"github.com/pkg/errors"
"github.com/projectatomic/libpod/libpod"
"github.com/stretchr/testify/assert"
)
var (
bbNames = []string{"docker.io/library/busybox:latest", "docker.io/library/busybox", "docker.io/busybox:latest", "docker.io/busybox", "busybox:latest", "busybox"}
bbGlibcNames = []string{"docker.io/library/busybox:glibc", "docker.io/busybox:glibc", "busybox:glibc"}
fedoraNames = []string{"registry.fedoraproject.org/fedora-minimal:latest", "registry.fedoraproject.org/fedora-minimal", "fedora-minimal:latest", "fedora-minimal"}
)
// setup a runtime for the tests in an alternative location on the filesystem
func setupRuntime(workdir string) (*libpod.Runtime, error) {
if reexec.Init() {
return nil, errors.Errorf("dude")
}
sc := libpod.WithStorageConfig(storage.StoreOptions{
GraphRoot: workdir,
RunRoot: workdir,
})
sd := libpod.WithStaticDir(path.Join(workdir, "libpod_tmp"))
td := libpod.WithTmpDir(path.Join(workdir, "tmpdir"))
options := []libpod.RuntimeOption{sc, sd, td}
return libpod.NewRuntime(options...)
}
// getImage is only used to build a test matrix for testing local images
func getImage(r *libpod.Runtime, fqImageName string) (*storage.Image, error) {
img, err := NewFromLocal(fqImageName, r)
if err != nil {
return nil, err
}
return img.image, nil
}
func tagImage(r *libpod.Runtime, fqImageName, tagName string) error {
img, err := NewFromLocal(fqImageName, r)
if err != nil {
return err
}
r.TagImage(img.image, tagName)
return nil
}
type localImageTest struct {
fqname, taggedName string
img *storage.Image
names []string
}
// make a temporary directory for the runtime
func mkWorkDir() (string, error) {
return ioutil.TempDir("", "podman-test")
}
// shutdown the runtime and clean behind it
func cleanup(r *libpod.Runtime, workdir string) {
r.Shutdown(true)
err := os.RemoveAll(workdir)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
}
func makeLocalMatrix(r *libpod.Runtime) ([]localImageTest, error) {
var l []localImageTest
// busybox
busybox := localImageTest{
fqname: "docker.io/library/busybox:latest",
taggedName: "bb:latest",
}
b, err := getImage(r, busybox.fqname)
if err != nil {
return nil, err
}
busybox.img = b
busybox.names = bbNames
busybox.names = append(busybox.names, []string{"bb:latest", "bb", b.ID, b.ID[0:7], fmt.Sprintf("busybox@%s", b.Digest.String())}...)
//fedora
fedora := localImageTest{
fqname: "registry.fedoraproject.org/fedora-minimal:latest",
taggedName: "f27:latest",
}
f, err := getImage(r, fedora.fqname)
if err != nil {
return nil, err
}
fedora.img = f
fedora.names = fedoraNames
// busybox-glibc
busyboxGlibc := localImageTest{
fqname: "docker.io/library/busybox:glibc",
taggedName: "bb:glibc",
}
bg, err := getImage(r, busyboxGlibc.fqname)
if err != nil {
return nil, err
}
busyboxGlibc.img = bg
busyboxGlibc.names = bbGlibcNames
l = append(l, busybox, fedora)
return l, nil
}
// TestImage_NewFromLocal tests finding the image locally by various names,
// tags, and aliases
func TestImage_NewFromLocal(t *testing.T) {
workdir, err := mkWorkDir()
assert.NoError(t, err)
runtime, err := setupRuntime(workdir)
assert.NoError(t, err)
// Need images to be present for this test
_, err = runtime.PullImage("docker.io/library/busybox:latest", libpod.CopyOptions{})
assert.NoError(t, err)
_, err = runtime.PullImage("docker.io/library/busybox:glibc", libpod.CopyOptions{})
assert.NoError(t, err)
_, err = runtime.PullImage("registry.fedoraproject.org/fedora-minimal:latest", libpod.CopyOptions{})
assert.NoError(t, err)
tm, err := makeLocalMatrix(runtime)
assert.NoError(t, err)
for _, image := range tm {
// tag our images
err = tagImage(runtime, image.fqname, image.taggedName)
assert.NoError(t, err)
for _, name := range image.names {
newImage, err := NewFromLocal(name, runtime)
assert.NoError(t, err)
assert.Equal(t, newImage.ID(), image.img.ID)
}
}
// Shutdown the runtime and remove the temporary storage
cleanup(runtime, workdir)
}
// TestImage_New tests pulling the image by various names, tags, and from
// different registries
func TestImage_New(t *testing.T) {
var names []string
workdir, err := mkWorkDir()
assert.NoError(t, err)
runtime, err := setupRuntime(workdir)
assert.NoError(t, err)
// Build the list of pull names
names = append(names, bbNames...)
names = append(names, fedoraNames...)
// Iterate over the names and delete the image
// after the pull
for _, img := range names {
_, err := runtime.GetImage(img)
if err == nil {
os.Exit(1)
}
newImage, err := New(img, runtime)
assert.NoError(t, err)
assert.NotEqual(t, newImage.ID(), "")
err = newImage.Remove(false)
assert.NoError(t, err)
}
// Shutdown the runtime and remove the temporary storage
cleanup(runtime, workdir)
}
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