fix issue #280 namedtuple erorring in error generation on safe_dump

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1 files changed, 14 insertions, 0 deletions

diff --git a/_test/test_issues.py b/_test/test_issues.py
index 721f3fe..d5913f6 100644
--- a/_test/test_issues.py
+++ b/_test/test_issues.py
@@ -560,8 +560,22 @@ class TestIssues:
         """
         d = round_trip(inp)  # NOQA
 
+    def test_issue_280(self):
+        from ruamel.yaml import YAML
+        from ruamel.yaml.representer import RepresenterError
+        from collections import namedtuple
+        from sys import stdout
+        T = namedtuple('T', ('a', 'b'))
+        t = T(1, 2)
+        yaml = YAML()
+        with pytest.raises(RepresenterError, match='cannot represent'):
+            yaml.dump({'t': t}, stdout)
+
 #    @pytest.mark.xfail(strict=True, reason='bla bla', raises=AssertionError)
 #    def test_issue_ xxx(self):
 #        inp = """
 #        """
 #        d = round_trip(inp)  # NOQA
+
+
+