test: add basic sad path unit tests for ParametersConstructor

Author: lu-pl

tests/unit/test_operation_parameters_sad_path.py

@@ -0,0 +1,23 @@
+"""Sad path tests for SPARQLOperationParametersConstructor."""
+
+import pytest
+from sparqlx.utils.operation_parameters import (
+    QueryOperationParametersConstructor,
+    UpdateOperationParametersConstructor,
+)
+
+
+def test_query_operation_parameters_invalid_method():
+    msg = "Expected query method 'GET', 'POST' or 'POST-direct'. Got 'invalid'."
+    with pytest.raises(ValueError, match=msg):
+        QueryOperationParametersConstructor(
+            query="select * where {}", query_type="SelectQuery"
+        ).get_params("invalid")  # type: ignore
+
+
+def test_update_operation_parameters_invalid_method():
+    msg = "Expected update method 'POST' or 'POST-direct'. Got 'invalid'."
+    with pytest.raises(ValueError, match=msg):
+        UpdateOperationParametersConstructor(
+            update_request="insert {} where {}"
+        ).get_params("invalid")  # type: ignore