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moby--moby/graph/manifest_test.go

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package graph
import (
"encoding/json"
"os"
"testing"
"github.com/docker/docker/image"
"github.com/docker/docker/registry"
"github.com/docker/docker/utils"
)
const (
testManifestImageName = "testapp"
testManifestImageID = "d821b739e8834ec89ac4469266c3d11515da88fdcbcbdddcbcddb636f54fdde9"
testManifestImageIDShort = "d821b739e883"
testManifestTag = "manifesttest"
)
func TestManifestTarsumCache(t *testing.T) {
tmp, err := utils.TestDirectory("")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(tmp)
store := mkTestTagStore(tmp, t)
defer store.graph.driver.Cleanup()
archive, err := fakeTar()
if err != nil {
t.Fatal(err)
}
img := &image.Image{ID: testManifestImageID}
if err := store.graph.Register(img, archive); err != nil {
t.Fatal(err)
}
if err := store.Set(testManifestImageName, testManifestTag, testManifestImageID, false); err != nil {
t.Fatal(err)
}
if cs, err := img.GetCheckSum(store.graph.ImageRoot(testManifestImageID)); err != nil {
t.Fatal(err)
} else if cs != "" {
t.Fatalf("Non-empty checksum file after register")
}
// Generate manifest
payload, err := store.newManifest(testManifestImageName, testManifestImageName, testManifestTag)
if err != nil {
t.Fatal(err)
}
manifestChecksum, err := img.GetCheckSum(store.graph.ImageRoot(testManifestImageID))
if err != nil {
t.Fatal(err)
}
var manifest registry.ManifestData
if err := json.Unmarshal(payload, &manifest); err != nil {
t.Fatalf("error unmarshalling manifest: %s", err)
}
if len(manifest.FSLayers) != 1 {
t.Fatalf("Unexpected number of layers, expecting 1: %d", len(manifest.FSLayers))
}
if manifest.FSLayers[0].BlobSum != manifestChecksum {
t.Fatalf("Unexpected blob sum, expecting %q, got %q", manifestChecksum, manifest.FSLayers[0].BlobSum)
}
if len(manifest.History) != 1 {
t.Fatalf("Unexpected number of layer history, expecting 1: %d", len(manifest.History))
}
v1compat, err := img.RawJson()
if err != nil {
t.Fatal(err)
}
if manifest.History[0].V1Compatibility != string(v1compat) {
t.Fatalf("Unexpected json value\nExpected:\n%s\nActual:\n%s", v1compat, manifest.History[0].V1Compatibility)
}
}