🚧 adds inherited tests

tests/nominal/test_GroupRareLevelsTransformer.py

@@ -5,12 +5,22 @@
 
 import tests.test_data as d
 import tubular
+from tests.base_tests import (
+    ColumnStrListInitTests,
+    GenericFitTests,
+    GenericTransformTests,
+    OtherBaseBehaviourTests,
+)
 from tubular.nominal import GroupRareLevelsTransformer
 
 
-class TestInit:
+class TestInit(ColumnStrListInitTests):
     """Tests for GroupRareLevelsTransformer.init()."""
 
+    @classmethod
+    def setup_class(cls):
+        cls.transformer_name = "GroupRareLevelsTransformer"
+
     def test_super_init_called(self, mocker):
         """Test that init calls BaseTransformer.init."""
         expected_call_args = {
@@ -74,9 +84,13 @@ def test_unseen_levels_to_rare_not_bool_error(self):
             GroupRareLevelsTransformer(columns="a", unseen_levels_to_rare=2)
 
 
-class TestFit:
+class TestFit(GenericFitTests):
     """Tests for GroupRareLevelsTransformer.fit()."""
 
+    @classmethod
+    def setup_class(cls):
+        cls.transformer_name = "GroupRareLevelsTransformer"
+
     def test_super_fit_called(self, mocker):
         """Test that fit calls BaseTransformer.fit."""
         df = d.create_df_5()
@@ -221,9 +235,13 @@ def test_training_data_levels_stored(self):
         )
 
 
-class TestTransform:
+class TestTransform(GenericTransformTests):
     """Tests for GroupRareLevelsTransformer.transform()."""
 
+    @classmethod
+    def setup_class(cls):
+        cls.transformer_name = "GroupRareLevelsTransformer"
+
     def expected_df_1():
         """Expected output for test_expected_output_no_weight."""
         df = pd.DataFrame({"a": [1, 2, 3, 4, 5, 6, 7, 8, 9, np.nan]})
@@ -471,3 +489,15 @@ def test_rare_categories_forgotten(self):
             assert (
                 cat not in output_categories
             ), f"{x.classname} output columns should forget rare encoded categories, expected {cat} to be forgotten from column {column}"
+
+
+class TestOtherBaseBehaviour(OtherBaseBehaviourTests):
+    """
+    Class to run tests for BaseTransformerBehaviour outside the three standard methods.
+
+    May need to overwite specific tests in this class if the tested transformer modifies this behaviour.
+    """
+
+    @classmethod
+    def setup_class(cls):
+        cls.transformer_name = "BaseNominalTransformer"