forked from containers/image
/
oci_transport_test.go
320 lines (278 loc) · 9.21 KB
/
oci_transport_test.go
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package layout
import (
"context"
"io/ioutil"
"os"
"path/filepath"
"testing"
_ "github.com/containers/image/v5/internal/testing/explicitfilepath-tmpdir"
"github.com/containers/image/v5/types"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// TestGetManifestDescriptor is testing a regression issue where a nil error was being wrapped,
// this causes the returned error to be nil as well and the user wasn't getting a proper error output.
//
// More info: https://github.com/containers/skopeo/issues/496
func TestGetManifestDescriptor(t *testing.T) {
imageRef, err := NewReference("fixtures/two_images_manifest", "")
require.NoError(t, err)
_, err = imageRef.(ociReference).getManifestDescriptor()
assert.EqualError(t, err, ErrMoreThanOneImage.Error())
}
func TestTransportName(t *testing.T) {
assert.Equal(t, "oci", Transport.Name())
}
func TestTransportParseReference(t *testing.T) {
testParseReference(t, Transport.ParseReference)
}
func TestTransportValidatePolicyConfigurationScope(t *testing.T) {
for _, scope := range []string{
"/etc",
"/this/does/not/exist",
} {
err := Transport.ValidatePolicyConfigurationScope(scope)
assert.NoError(t, err, scope)
}
for _, scope := range []string{
"relative/path",
"/",
"/double//slashes",
"/has/./dot",
"/has/dot/../dot",
"/trailing/slash/",
} {
err := Transport.ValidatePolicyConfigurationScope(scope)
assert.Error(t, err, scope)
}
}
func TestParseReference(t *testing.T) {
testParseReference(t, ParseReference)
}
// testParseReference is a test shared for Transport.ParseReference and ParseReference.
func testParseReference(t *testing.T, fn func(string) (types.ImageReference, error)) {
tmpDir, err := ioutil.TempDir("", "oci-transport-test")
require.NoError(t, err)
defer os.RemoveAll(tmpDir)
for _, path := range []string{
"/",
"/etc",
tmpDir,
"relativepath",
tmpDir + "/thisdoesnotexist",
} {
for _, image := range []struct{ suffix, image string }{
{":notlatest:image", "notlatest:image"},
{":latestimage", "latestimage"},
{":", ""},
{"", ""},
} {
input := path + image.suffix
ref, err := fn(input)
require.NoError(t, err, input)
ociRef, ok := ref.(ociReference)
require.True(t, ok)
assert.Equal(t, path, ociRef.dir, input)
assert.Equal(t, image.image, ociRef.image, input)
}
}
_, err = fn(tmpDir + ":invalid'image!value@")
assert.Error(t, err)
}
func TestNewReference(t *testing.T) {
const (
imageValue = "imageValue"
noImageValue = ""
)
tmpDir, err := ioutil.TempDir("", "oci-transport-test")
require.NoError(t, err)
defer os.RemoveAll(tmpDir)
ref, err := NewReference(tmpDir, imageValue)
require.NoError(t, err)
ociRef, ok := ref.(ociReference)
require.True(t, ok)
assert.Equal(t, tmpDir, ociRef.dir)
assert.Equal(t, imageValue, ociRef.image)
ref, err = NewReference(tmpDir, noImageValue)
require.NoError(t, err)
ociRef, ok = ref.(ociReference)
require.True(t, ok)
assert.Equal(t, tmpDir, ociRef.dir)
assert.Equal(t, noImageValue, ociRef.image)
_, err = NewReference(tmpDir+"/thisparentdoesnotexist/something", imageValue)
assert.Error(t, err)
_, err = NewReference(tmpDir, "invalid'image!value@")
assert.Error(t, err)
_, err = NewReference(tmpDir+"/has:colon", imageValue)
assert.Error(t, err)
}
// refToTempOCI creates a temporary directory and returns an reference to it.
// The caller should
// defer os.RemoveAll(tmpDir)
func refToTempOCI(t *testing.T) (ref types.ImageReference, tmpDir string) {
tmpDir, err := ioutil.TempDir("", "oci-transport-test")
require.NoError(t, err)
m := `{
"schemaVersion": 2,
"manifests": [
{
"mediaType": "application/vnd.oci.image.manifest.v1+json",
"size": 7143,
"digest": "sha256:e692418e4cbaf90ca69d05a66403747baa33ee08806650b51fab815ad7fc331f",
"platform": {
"architecture": "ppc64le",
"os": "linux"
},
"annotations": {
"org.opencontainers.image.ref.name": "imageValue"
}
}
]
}
`
err = ioutil.WriteFile(filepath.Join(tmpDir, "index.json"), []byte(m), 0644)
require.NoError(t, err)
ref, err = NewReference(tmpDir, "imageValue")
require.NoError(t, err)
return ref, tmpDir
}
func TestReferenceTransport(t *testing.T) {
ref, tmpDir := refToTempOCI(t)
defer os.RemoveAll(tmpDir)
assert.Equal(t, Transport, ref.Transport())
}
func TestReferenceStringWithinTransport(t *testing.T) {
tmpDir, err := ioutil.TempDir("", "oci-transport-test")
require.NoError(t, err)
defer os.RemoveAll(tmpDir)
for _, c := range []struct{ input, result string }{
{"/dir1:notlatest:notlatest", "/dir1:notlatest:notlatest"}, // Explicit image
{"/dir3:", "/dir3:"}, // No image
} {
ref, err := ParseReference(tmpDir + c.input)
require.NoError(t, err, c.input)
stringRef := ref.StringWithinTransport()
assert.Equal(t, tmpDir+c.result, stringRef, c.input)
// Do one more round to verify that the output can be parsed, to an equal value.
ref2, err := Transport.ParseReference(stringRef)
require.NoError(t, err, c.input)
stringRef2 := ref2.StringWithinTransport()
assert.Equal(t, stringRef, stringRef2, c.input)
}
}
func TestReferenceDockerReference(t *testing.T) {
ref, tmpDir := refToTempOCI(t)
defer os.RemoveAll(tmpDir)
assert.Nil(t, ref.DockerReference())
}
func TestReferencePolicyConfigurationIdentity(t *testing.T) {
ref, tmpDir := refToTempOCI(t)
defer os.RemoveAll(tmpDir)
assert.Equal(t, tmpDir, ref.PolicyConfigurationIdentity())
// A non-canonical path. Test just one, the various other cases are
// tested in explicitfilepath.ResolvePathToFullyExplicit.
ref, err := NewReference(tmpDir+"/.", "image2")
require.NoError(t, err)
assert.Equal(t, tmpDir, ref.PolicyConfigurationIdentity())
// "/" as a corner case.
ref, err = NewReference("/", "image3")
require.NoError(t, err)
assert.Equal(t, "/", ref.PolicyConfigurationIdentity())
}
func TestReferencePolicyConfigurationNamespaces(t *testing.T) {
ref, tmpDir := refToTempOCI(t)
defer os.RemoveAll(tmpDir)
// We don't really know enough to make a full equality test here.
ns := ref.PolicyConfigurationNamespaces()
require.NotNil(t, ns)
assert.True(t, len(ns) >= 2)
assert.Equal(t, tmpDir, ns[0])
assert.Equal(t, filepath.Dir(tmpDir), ns[1])
// Test with a known path which should exist. Test just one non-canonical
// path, the various other cases are tested in explicitfilepath.ResolvePathToFullyExplicit.
//
// It would be nice to test a deeper hierarchy, but it is not obvious what
// deeper path is always available in the various distros, AND is not likely
// to contains a symbolic link.
for _, path := range []string{"/usr/share", "/usr/share/./."} {
_, err := os.Lstat(path)
require.NoError(t, err)
ref, err := NewReference(path, "someimage")
require.NoError(t, err)
ns := ref.PolicyConfigurationNamespaces()
require.NotNil(t, ns)
assert.Equal(t, []string{"/usr/share", "/usr"}, ns)
}
// "/" as a corner case.
ref, err := NewReference("/", "image3")
require.NoError(t, err)
assert.Equal(t, []string{}, ref.PolicyConfigurationNamespaces())
}
func TestReferenceNewImage(t *testing.T) {
ref, tmpDir := refToTempOCI(t)
defer os.RemoveAll(tmpDir)
_, err := ref.NewImage(context.Background(), nil)
assert.Error(t, err)
}
func TestReferenceNewImageSource(t *testing.T) {
ref, tmpDir := refToTempOCI(t)
defer os.RemoveAll(tmpDir)
_, err := ref.NewImageSource(context.Background(), nil)
assert.NoError(t, err)
}
func TestReferenceNewImageDestination(t *testing.T) {
ref, tmpDir := refToTempOCI(t)
defer os.RemoveAll(tmpDir)
dest, err := ref.NewImageDestination(context.Background(), nil)
assert.NoError(t, err)
defer dest.Close()
}
func TestReferenceDeleteImage(t *testing.T) {
ref, tmpDir := refToTempOCI(t)
defer os.RemoveAll(tmpDir)
err := ref.DeleteImage(context.Background(), nil)
assert.Error(t, err)
}
func TestReferenceOCILayoutPath(t *testing.T) {
ref, tmpDir := refToTempOCI(t)
defer os.RemoveAll(tmpDir)
ociRef, ok := ref.(ociReference)
require.True(t, ok)
assert.Equal(t, tmpDir+"/oci-layout", ociRef.ociLayoutPath())
}
func TestReferenceIndexPath(t *testing.T) {
ref, tmpDir := refToTempOCI(t)
defer os.RemoveAll(tmpDir)
ociRef, ok := ref.(ociReference)
require.True(t, ok)
assert.Equal(t, tmpDir+"/index.json", ociRef.indexPath())
}
func TestReferenceBlobPath(t *testing.T) {
const hex = "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
ref, tmpDir := refToTempOCI(t)
defer os.RemoveAll(tmpDir)
ociRef, ok := ref.(ociReference)
require.True(t, ok)
bp, err := ociRef.blobPath("sha256:"+hex, "")
assert.NoError(t, err)
assert.Equal(t, tmpDir+"/blobs/sha256/"+hex, bp)
}
func TestReferenceSharedBlobPathShared(t *testing.T) {
const hex = "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
ref, tmpDir := refToTempOCI(t)
defer os.RemoveAll(tmpDir)
ociRef, ok := ref.(ociReference)
require.True(t, ok)
bp, err := ociRef.blobPath("sha256:"+hex, "/external/path")
assert.NoError(t, err)
assert.Equal(t, "/external/path/sha256/"+hex, bp)
}
func TestReferenceBlobPathInvalid(t *testing.T) {
const hex = "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
ref, tmpDir := refToTempOCI(t)
defer os.RemoveAll(tmpDir)
ociRef, ok := ref.(ociReference)
require.True(t, ok)
_, err := ociRef.blobPath(hex, "")
assert.ErrorContains(t, err, "unexpected digest reference "+hex)
}