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package image
import (
"runtime"
"testing"
"github.com/docker/docker/layer"
"github.com/docker/docker/pkg/testutil"
"github.com/opencontainers/go-digest"
"github.com/stretchr/testify/assert"
)
func TestRestore(t *testing.T) {
fs, cleanup := defaultFSStoreBackend(t)
defer cleanup()
id1, err := fs.Set([]byte(`{"comment": "abc", "rootfs": {"type": "layers"}}`))
assert.NoError(t, err)
_, err = fs.Set([]byte(`invalid`))
assert.NoError(t, err)
id2, err := fs.Set([]byte(`{"comment": "def", "rootfs": {"type": "layers", "diff_ids": ["2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"]}}`))
assert.NoError(t, err)
err = fs.SetMetadata(id2, "parent", []byte(id1))
assert.NoError(t, err)
is, err := NewImageStore(fs, runtime.GOOS, &mockLayerGetReleaser{})
assert.NoError(t, err)
assert.Len(t, is.Map(), 2)
img1, err := is.Get(ID(id1))
assert.NoError(t, err)
assert.Equal(t, ID(id1), img1.computedID)
assert.Equal(t, string(id1), img1.computedID.String())
img2, err := is.Get(ID(id2))
assert.NoError(t, err)
assert.Equal(t, "abc", img1.Comment)
assert.Equal(t, "def", img2.Comment)
p, err := is.GetParent(ID(id1))
testutil.ErrorContains(t, err, "failed to read metadata")
p, err = is.GetParent(ID(id2))
assert.NoError(t, err)
assert.Equal(t, ID(id1), p)
children := is.Children(ID(id1))
assert.Len(t, children, 1)
assert.Equal(t, ID(id2), children[0])
assert.Len(t, is.Heads(), 1)
sid1, err := is.Search(string(id1)[:10])
assert.NoError(t, err)
assert.Equal(t, ID(id1), sid1)
sid1, err = is.Search(digest.Digest(id1).Hex()[:6])
assert.NoError(t, err)
assert.Equal(t, ID(id1), sid1)
invalidPattern := digest.Digest(id1).Hex()[1:6]
_, err = is.Search(invalidPattern)
testutil.ErrorContains(t, err, "No such image")
}
func TestAddDelete(t *testing.T) {
is, cleanup := defaultImageStore(t)
defer cleanup()
id1, err := is.Create([]byte(`{"comment": "abc", "rootfs": {"type": "layers", "diff_ids": ["2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"]}}`))
assert.NoError(t, err)
assert.Equal(t, ID("sha256:8d25a9c45df515f9d0fe8e4a6b1c64dd3b965a84790ddbcc7954bb9bc89eb993"), id1)
img, err := is.Get(id1)
assert.NoError(t, err)
assert.Equal(t, "abc", img.Comment)
id2, err := is.Create([]byte(`{"comment": "def", "rootfs": {"type": "layers", "diff_ids": ["2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"]}}`))
assert.NoError(t, err)
err = is.SetParent(id2, id1)
assert.NoError(t, err)
pid1, err := is.GetParent(id2)
assert.NoError(t, err)
assert.Equal(t, pid1, id1)
_, err = is.Delete(id1)
assert.NoError(t, err)
_, err = is.Get(id1)
testutil.ErrorContains(t, err, "failed to get digest")
_, err = is.Get(id2)
assert.NoError(t, err)
_, err = is.GetParent(id2)
testutil.ErrorContains(t, err, "failed to read metadata")
}
func TestSearchAfterDelete(t *testing.T) {
is, cleanup := defaultImageStore(t)
defer cleanup()
id, err := is.Create([]byte(`{"comment": "abc", "rootfs": {"type": "layers"}}`))
assert.NoError(t, err)
id1, err := is.Search(string(id)[:15])
assert.NoError(t, err)
assert.Equal(t, id1, id)
_, err = is.Delete(id)
assert.NoError(t, err)
_, err = is.Search(string(id)[:15])
testutil.ErrorContains(t, err, "No such image")
}
func TestParentReset(t *testing.T) {
is, cleanup := defaultImageStore(t)
defer cleanup()
id, err := is.Create([]byte(`{"comment": "abc1", "rootfs": {"type": "layers"}}`))
assert.NoError(t, err)
id2, err := is.Create([]byte(`{"comment": "abc2", "rootfs": {"type": "layers"}}`))
assert.NoError(t, err)
id3, err := is.Create([]byte(`{"comment": "abc3", "rootfs": {"type": "layers"}}`))
assert.NoError(t, err)
assert.NoError(t, is.SetParent(id, id2))
assert.Len(t, is.Children(id2), 1)
assert.NoError(t, is.SetParent(id, id3))
assert.Len(t, is.Children(id2), 0)
assert.Len(t, is.Children(id3), 1)
}
func defaultImageStore(t *testing.T) (Store, func()) {
fsBackend, cleanup := defaultFSStoreBackend(t)
store, err := NewImageStore(fsBackend, runtime.GOOS, &mockLayerGetReleaser{})
assert.NoError(t, err)
return store, cleanup
}
func TestGetAndSetLastUpdated(t *testing.T) {
store, cleanup := defaultImageStore(t)
defer cleanup()
id, err := store.Create([]byte(`{"comment": "abc1", "rootfs": {"type": "layers"}}`))
assert.NoError(t, err)
updated, err := store.GetLastUpdated(id)
assert.NoError(t, err)
assert.Equal(t, updated.IsZero(), true)
assert.NoError(t, store.SetLastUpdated(id))
updated, err = store.GetLastUpdated(id)
assert.NoError(t, err)
assert.Equal(t, updated.IsZero(), false)
}
type mockLayerGetReleaser struct{}
func (ls *mockLayerGetReleaser) Get(layer.ChainID) (layer.Layer, error) {
return nil, nil
}
func (ls *mockLayerGetReleaser) Release(layer.Layer) ([]layer.Metadata, error) {
return nil, nil
}
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