Add function in data interface for mounting blobs into other repositories

data/registry_model/test/test_pre_oci_model.py

@@ -554,6 +554,7 @@ def test_torrent_info(pre_oci_model):
   assert torrent_info.pieces == 'foo'
 
 
+<<<<<<< HEAD
 def test_blob_uploads(pre_oci_model):
   repository_ref = pre_oci_model.lookup_repository('devtable', 'simple')
 
@@ -599,3 +600,25 @@ def test_commit_blob_upload(pre_oci_model):
 
   # Ensure the upload can no longer be found.
   assert not pre_oci_model.lookup_blob_upload(repository_ref, blob_upload.upload_id)
+
+
+def test_mount_blob_into_repository(pre_oci_model):
+  repository_ref = pre_oci_model.lookup_repository('devtable', 'simple')
+  latest_tag = pre_oci_model.get_repo_tag(repository_ref, 'latest')
+  manifest = pre_oci_model.get_manifest_for_tag(latest_tag)
+
+  target_repository_ref = pre_oci_model.lookup_repository('devtable', 'complex')
+
+  layers = pre_oci_model.list_manifest_layers(manifest, include_placements=True)
+  assert layers
+
+  for layer in layers:
+    # Ensure the blob doesn't exist under the repository.
+    assert not pre_oci_model.get_repo_blob_by_digest(target_repository_ref, layer.blob.digest)
+
+    # Mount the blob into the repository.
+    assert pre_oci_model.mount_blob_into_repository(layer.blob, target_repository_ref, 60)
+
+    # Ensure it now exists.
+    found = pre_oci_model.get_repo_blob_by_digest(target_repository_ref, layer.blob.digest)
+    assert found == layer.blob