test(frontend): add test for get_n_split method for KFold in sklearn …

…frontend

ivy_tests/test_ivy/test_frontends/test_sklearn/test_model_selection/test_split.py

@@ -47,6 +47,40 @@ def test_sklearn_kfold_split(
     )
 
 
+@handle_frontend_method(
+    class_tree=CLASS_TREE,
+    init_tree="sklearn.model_selection.KFold",
+    method_name="get_n_splits",
+    dtype_x=helpers.dtype_and_values(),
+)
+def test_sklearn_kfold_get_n_split(
+    dtype_x,
+    frontend,
+    frontend_method_data,
+    init_flags,
+    method_flags,
+    on_device,
+    backend_fw,
+):
+    input_dtype, x = dtype_x
+    helpers.test_frontend_method(
+        init_input_dtypes=input_dtype,
+        init_all_as_kwargs_np={
+            "n_splits": 2,  # this arg only for compatibility
+        },
+        method_input_dtypes=input_dtype,
+        method_all_as_kwargs_np={
+            "X": x[0],
+        },
+        frontend_method_data=frontend_method_data,
+        init_flags=init_flags,
+        method_flags=method_flags,
+        frontend=frontend,
+        on_device=on_device,
+        backend_to_test=backend_fw,
+    )
+
+
 @handle_frontend_test(
     fn_tree="sklearn.model_selection.train_test_split",
     arrays_and_dtypes=helpers.dtype_and_values(