1 files changed, 13 insertions, 1 deletions
diff --git a/3rdparty/pybind11/tests/test_opaque_types.py b/3rdparty/pybind11/tests/test_opaque_types.py
index 6b3802fd..77379463 100644
--- a/3rdparty/pybind11/tests/test_opaque_types.py
+++ b/3rdparty/pybind11/tests/test_opaque_types.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 import pytest
 from pybind11_tests import opaque_types as m
 from pybind11_tests import ConstructorStats, UserType
@@ -31,12 +32,15 @@ def test_pointers(msg):
 
     with pytest.raises(TypeError) as excinfo:
         m.get_void_ptr_value([1, 2, 3])  # This should not work
-    assert msg(excinfo.value) == """
+    assert (
+        msg(excinfo.value)
+        == """
         get_void_ptr_value(): incompatible function arguments. The following argument types are supported:
             1. (arg0: capsule) -> int
 
         Invoked with: [1, 2, 3]
     """  # noqa: E501 line too long
+    )
 
     assert m.return_null_str() is None
     assert m.get_null_str_value(m.return_null_str()) is not None
@@ -44,3 +48,11 @@ def test_pointers(msg):
     ptr = m.return_unique_ptr()
     assert "StringList" in repr(ptr)
     assert m.print_opaque_list(ptr) == "Opaque list: [some value]"
+
+
+def test_unions():
+    int_float_union = m.IntFloat()
+    int_float_union.i = 42
+    assert int_float_union.i == 42
+    int_float_union.f = 3.0
+    assert int_float_union.f == 3.0