diff --git a/swh/loader/package/cran/tests/test_cran.py b/swh/loader/package/cran/tests/test_cran.py
--- a/swh/loader/package/cran/tests/test_cran.py
+++ b/swh/loader/package/cran/tests/test_cran.py
@@ -19,7 +19,7 @@
 )
 from swh.core.tarball import uncompress
 from swh.model.hashutil import hash_to_bytes
-from swh.model.model import TimestampWithTimezone
+from swh.model.model import Snapshot, SnapshotBranch, TargetType, TimestampWithTimezone
 
 from swh.loader.tests import (
     assert_last_visit_matches,
@@ -175,16 +175,18 @@
         "snapshot_id": expected_snapshot_id,
     }
 
-    expected_snapshot = {
-        "id": hash_to_bytes(expected_snapshot_id),
-        "branches": {
-            b"HEAD": {"target": b"releases/2.22-6", "target_type": "alias"},
-            b"releases/2.22-6": {
-                "target": hash_to_bytes("42bdb16facd5140424359c8ce89a28ecfa1ce603"),
-                "target_type": "revision",
-            },
+    expected_snapshot = Snapshot(
+        id=hash_to_bytes(expected_snapshot_id),
+        branches={
+            b"HEAD": SnapshotBranch(
+                target=b"releases/2.22-6", target_type=TargetType.ALIAS
+            ),
+            b"releases/2.22-6": SnapshotBranch(
+                target=hash_to_bytes("42bdb16facd5140424359c8ce89a28ecfa1ce603"),
+                target_type=TargetType.REVISION,
+            ),
         },
-    }
+    )
     check_snapshot(expected_snapshot, loader.storage)
 
     assert_last_visit_matches(loader.storage, origin_url, status="full", type="cran")
@@ -232,16 +234,18 @@
         "snapshot_id": expected_snapshot_id,
     }
 
-    expected_snapshot = {
-        "id": hash_to_bytes(expected_snapshot_id),
-        "branches": {
-            b"HEAD": {"target": b"releases/2.22-6", "target_type": "alias"},
-            b"releases/2.22-6": {
-                "target": hash_to_bytes("42bdb16facd5140424359c8ce89a28ecfa1ce603"),
-                "target_type": "revision",
-            },
+    expected_snapshot = Snapshot(
+        id=hash_to_bytes(expected_snapshot_id),
+        branches={
+            b"HEAD": SnapshotBranch(
+                target=b"releases/2.22-6", target_type=TargetType.ALIAS
+            ),
+            b"releases/2.22-6": SnapshotBranch(
+                target=hash_to_bytes("42bdb16facd5140424359c8ce89a28ecfa1ce603"),
+                target_type=TargetType.REVISION,
+            ),
         },
-    }
+    )
     check_snapshot(expected_snapshot, loader.storage)
 
     assert_last_visit_matches(loader.storage, origin_url, status="full", type="cran")