TST: Add minimal test to cover many-argument path

seberg · seberg · commit 6b6b7914f86c · 2023-06-10T21:30:00.000+02:00
diff --git a/numpy/core/tests/test_argparse.py b/numpy/core/tests/test_argparse.py
@@ -60,3 +60,12 @@ def test_string_fallbacks():
             match="got an unexpected keyword argument 'missing_arg'"):
         func(2, **{missing_arg: 3})
 
+
+def test_too_many_arguments_method_forwarding():
+    # Not directly related to the standard argument parsing, but we sometimes
+    # forward methods to Python: arr.mean() calls np.core._methods._mean()
+    # This adds code coverage for this `npy_forward_method`.
+    arr = np.arange(3)
+    args = range(1000)
+    with pytest.raises(TypeError):
+        arr.mean(*args)
