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package storage
import (
"testing"
"github.com/opencontainers/go-digest"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestLayerID(t *testing.T) {
blobDigest, err := digest.Parse("sha256:0000000000000000000000000000000000000000000000000000000000000000")
require.NoError(t, err)
for _, c := range []struct {
parentID string
identifiedByTOC bool
diffID string
tocDigest string
expected string
}{
{
parentID: "",
identifiedByTOC: false,
diffID: "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
tocDigest: "",
expected: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
},
{
parentID: "",
identifiedByTOC: false,
diffID: "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
expected: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
tocDigest: "sha256:bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
},
{
parentID: "",
identifiedByTOC: true,
diffID: "",
tocDigest: "sha256:bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
expected: "07f60ddaf18a3d1fa18a71bf40f0b9889b473e26555d6fffdfbd72ba6a59469e",
},
{
parentID: "",
identifiedByTOC: true,
diffID: "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
tocDigest: "sha256:bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
expected: "07f60ddaf18a3d1fa18a71bf40f0b9889b473e26555d6fffdfbd72ba6a59469e",
},
{
parentID: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
identifiedByTOC: false,
diffID: "sha256:bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
tocDigest: "",
expected: "76f79efda453922cda1cecb6ec9e7cf9d86ea968c6dd199d4030dd00078a1686",
},
{
parentID: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
identifiedByTOC: false,
diffID: "sha256:bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
tocDigest: "sha256:cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc",
expected: "76f79efda453922cda1cecb6ec9e7cf9d86ea968c6dd199d4030dd00078a1686",
},
{
parentID: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
identifiedByTOC: true,
diffID: "",
tocDigest: "sha256:cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc",
expected: "468becc3d25ee862f81fd728d229a2b2487cfc9b3e6cf3a4d0af8c3fdde0e7a9",
},
{
parentID: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
identifiedByTOC: true,
diffID: "sha256:bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
tocDigest: "sha256:cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc",
expected: "468becc3d25ee862f81fd728d229a2b2487cfc9b3e6cf3a4d0af8c3fdde0e7a9",
},
} {
var diffID, tocDigest digest.Digest
if c.diffID != "" {
diffID, err = digest.Parse(c.diffID)
require.NoError(t, err)
}
if c.tocDigest != "" {
tocDigest, err = digest.Parse(c.tocDigest)
require.NoError(t, err)
}
res := layerID(c.parentID, trustedLayerIdentityData{
layerIdentifiedByTOC: c.identifiedByTOC,
diffID: diffID,
tocDigest: tocDigest,
blobDigest: "",
})
assert.Equal(t, c.expected, res)
// blobDigest does not affect the layer ID
res = layerID(c.parentID, trustedLayerIdentityData{
layerIdentifiedByTOC: c.identifiedByTOC,
diffID: diffID,
tocDigest: tocDigest,
blobDigest: blobDigest,
})
assert.Equal(t, c.expected, res)
}
}
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