fix (pgvector): fix error messages to say pgvector instead of pinecone (#3654)

Author: sjrl

integrations/pgvector/src/haystack_integrations/document_stores/pgvector/filters.py

@@ -227,14 +227,14 @@ def _less_than_equal(field: Composable, value: Any) -> tuple[Composed, Any]:
 
 def _not_in(field: Composable, value: Any) -> tuple[Composed, list]:
     if not isinstance(value, list):
-        msg = f"{field}'s value must be a list when using 'not in' comparator in Pinecone"
+        msg = f"{field}'s value must be a list when using 'not in' comparator in PgVector"
         raise FilterError(msg)
     return SQL("({} IS NULL OR {} != ALL(%s))").format(field, field), [value]
 
 
 def _in(field: Composable, value: Any) -> tuple[Composed, list]:
     if not isinstance(value, list):
-        msg = f"{field}'s value must be a list when using 'in' comparator in Pinecone"
+        msg = f"{field}'s value must be a list when using 'in' comparator in PgVector"
         raise FilterError(msg)
 
     # see https://www.psycopg.org/psycopg3/docs/basic/adapt.html#lists-adaptation

integrations/pgvector/tests/test_filters.py

@@ -183,6 +183,14 @@ def test_comparison_condition_unknown_operator():
         _parse_comparison_condition(condition)
 
 
+@pytest.mark.parametrize("operator", ["like", "not like"])
+def test_comparison_condition_like_operator_requires_str_value(operator):
+    # pgvector-specific: LIKE / NOT LIKE require a string operand.
+    condition = {"field": "meta.name", "operator": operator, "value": 123}
+    with pytest.raises(FilterError, match="must be a str when using 'LIKE'"):
+        _parse_comparison_condition(condition)
+
+
 def test_logical_condition_missing_operator():
     condition = {"conditions": []}
     with pytest.raises(FilterError):