simplify tests

Author: EricCousineau-TRI

tests/test_pytypes.cpp

@@ -320,19 +320,11 @@ TEST_SUBMODULE(pytypes, m) {
     });
 
     // See #2361
-    // These four tests should reflect the text in `object.rst`, the
-    // "Interaction with None" section.
-    m.def("test_str_with_default_arg_none" ,[](py::str value) {
-        return value;
-    }, py::arg("value") = py::none());
-    m.def("test_str_assign_none", []() {
+    m.def("issue2361_str_implicit_copy_none", []() {
         py::str is_this_none = py::none();
         return is_this_none;
     });
-    m.def("test_dict_with_default_arg_none", [](py::dict value) {
-        return value;
-    }, py::arg("value") = py::none());
-    m.def("test_dict_assign_none", []() {
+    m.def("issue2361_dict_implicit_copy_none", []() {
         py::dict is_this_none = py::none();
         return is_this_none;
     });

tests/test_pytypes.py

@@ -281,19 +281,11 @@ def test_list_slicing():
     assert li[::2] == m.test_list_slicing(li)
 
 
-def test_pytypes_with_none():
+def test_issue2361():
     # See issue #2361
-    assert m.test_str_assign_none() == "None"
+    assert m.issue2361_str_implicit_copy_none() == "None"
     with pytest.raises(TypeError) as excinfo:
-        m.test_str_with_default_arg_none()
-    assert "incompatible function arguments" in str(excinfo.value)
-
-    with pytest.raises(TypeError) as excinfo:
-        assert m.test_dict_assign_none()
-    assert "'NoneType' object is not iterable" in str(excinfo.value)
-    with pytest.raises(TypeError) as excinfo:
-        m.test_dict_with_default_arg_none()
-    assert "incompatible function arguments" in str(excinfo.value)
+        assert m.issue2361_dict_implicit_copy_none()
 
 
 @pytest.mark.parametrize('method, args, fmt, expected_view', [