LazyProxy: Handle AttributeError in specified func (#724)

Fixes #723

Co-authored-by: Aarni Koskela <akx@iki.fi>

1 files changed, 11 insertions, 0 deletions

diff --git a/tests/test_support.py b/tests/test_support.py
index b4dd823..1b74ae8 100644
--- a/tests/test_support.py
+++ b/tests/test_support.py
@@ -279,6 +279,17 @@ class LazyProxyTestCase(unittest.TestCase):
         self.assertEqual(2, proxy.value)
         self.assertEqual(1, proxy_deepcopy.value)
 
+    def test_handle_attribute_error(self):
+
+        def raise_attribute_error():
+            raise AttributeError('message')
+
+        proxy = support.LazyProxy(raise_attribute_error)
+        with pytest.raises(AttributeError) as exception:
+            proxy.value
+
+        self.assertEqual('message', str(exception.value))
+
 
 def test_format_date():
     fmt = support.Format('en_US')