added failing test, re #238

1 files changed, 33 insertions, 0 deletions

diff --git a/_test/test_issues.py b/_test/test_issues.py
index 3a56ccc..3ead121 100644
--- a/_test/test_issues.py
+++ b/_test/test_issues.py
@@ -450,6 +450,39 @@ class TestIssues:
         """
         d = round_trip(inp, preserve_quotes=True)  # NOQA
 
+    @pytest.mark.xfail(strict=True, reason='resolving __setstate__', raises=AssertionError)
+    def test_issue_238(self, tmpdir):
+        program_src = r'''
+        import ruamel.yaml
+        from ruamel.yaml.compat import StringIO
+
+        yaml = ruamel.yaml.YAML(typ='unsafe')
+        
+        
+        class A:
+            def __setstate__(self, d):
+                self.__dict__ = d
+
+        
+        class B:
+            pass
+        
+        
+        a = A()
+        b = B()
+        
+        a.x = b
+        b.y = [b]
+        assert a.x.y[0] == a.x
+        
+        buf = StringIO()
+        yaml.dump(a, buf)
+        
+        data = yaml.load(buf.getvalue())
+        assert data.x.y[0] == data.x
+        '''
+        assert save_and_run(dedent(program_src), tmpdir) == 0
+
 
 #    def test_issue_xxx(self):
 #        inp = """