fix: get_snapshot_value returns old_value

changelog.d/20260207_234758_qdewaghe_get_snapshot_value.md

@@ -0,0 +1,3 @@
+### Fixed
+
+- `get_snapshot_value` now works even if no assertions were made on the snapshot.

src/inline_snapshot/_get_snapshot_value.py

@@ -15,7 +15,7 @@
 
 def unwrap(value):
     if isinstance(value, GenericValue):
-        return adapter_map(value._visible_value(), lambda v: unwrap(v)[0]), True
+        return adapter_map(value._old_value, lambda v: unwrap(v)[0]), True
 
     if isinstance(value, (External, Outsourced, ExternalFile)):
         try:

tests/test_get_snapshot_value.py

@@ -87,3 +87,7 @@ def test_dataclass(try_snapshot_disable):
     assert s == A(a=outsource(5), b=2)
 
     assert inspect(get_snapshot_value(s)) == snapshot("A(a=5, b=2)")
+
+
+def test_no_assert():
+    assert get_snapshot_value(snapshot([])) == []