test: implement sad path tests

tests/tests_mapper/test_sad_path_adapter_grouped_models.py

@@ -0,0 +1,28 @@
+import pytest
+
+from pydantic import BaseModel, ConfigDict
+from rdfproxy import ModelBindingsMapper
+from rdfproxy.utils._exceptions import (
+    MissingModelConfigException,
+    UnboundGroupingKeyException,
+)
+
+
+class ModelMissingGroupByConfig(BaseModel):
+    x: list[int]
+
+
+class ModelMissingGroupByValue(BaseModel):
+    model_config = ConfigDict(group_by="y")
+
+    x: list[int]
+
+
+def test_sad_path_adapter_missing_grouping_config():
+    with pytest.raises(MissingModelConfigException):
+        ModelBindingsMapper(ModelMissingGroupByConfig, {"x": 1}).get_models()
+
+
+def test_sad_path_adapter_missing_grouping_value():
+    with pytest.raises(UnboundGroupingKeyException):
+        ModelBindingsMapper(ModelMissingGroupByValue, {"x": 1}).get_models()