Test session recording blank/control key rendering

Co-authored-by: Shri Sukhani <shrisukhani@users.noreply.github.com>

Author: cursoragent

tests/test_session_recording_utils.py

@@ -297,6 +297,54 @@ def __getitem__(self, key: str) -> object:
     assert exc_info.value.original_error is not None
 
 
+def test_parse_session_recordings_response_data_uses_blank_fallback_for_blank_value_keys():
+    class _BrokenValueLookupMapping(Mapping[str, object]):
+        def __iter__(self) -> Iterator[str]:
+            yield "   "
+
+        def __len__(self) -> int:
+            return 1
+
+        def __getitem__(self, key: str) -> object:
+            _ = key
+            raise RuntimeError("cannot read recording value")
+
+    with pytest.raises(
+        HyperbrowserError,
+        match=(
+            "Failed to read session recording object value "
+            "for key '<blank key>' at index 0"
+        ),
+    ) as exc_info:
+        parse_session_recordings_response_data([_BrokenValueLookupMapping()])
+
+    assert exc_info.value.original_error is not None
+
+
+def test_parse_session_recordings_response_data_preserves_control_placeholders_for_value_keys():
+    class _BrokenValueLookupMapping(Mapping[str, object]):
+        def __iter__(self) -> Iterator[str]:
+            yield "\n\t"
+
+        def __len__(self) -> int:
+            return 1
+
+        def __getitem__(self, key: str) -> object:
+            _ = key
+            raise RuntimeError("cannot read recording value")
+
+    with pytest.raises(
+        HyperbrowserError,
+        match=(
+            "Failed to read session recording object value "
+            "for key '\\?\\?' at index 0"
+        ),
+    ) as exc_info:
+        parse_session_recordings_response_data([_BrokenValueLookupMapping()])
+
+    assert exc_info.value.original_error is not None
+
+
 def test_parse_session_recordings_response_data_rejects_string_subclass_recording_keys_before_value_reads():
     class _BrokenKey(str):
         def __iter__(self):