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