- Fixed bug where a fair number of SQL elements within

the sql package would fail to ``__repr__()`` successfully,
due to a missing ``description`` attribute that would then invoke
a recursion overflow when an internal AttributeError would then
re-invoke ``__repr__()``.
fixes #3195

1 files changed, 24 insertions, 0 deletions

diff --git a/test/sql/test_selectable.py b/test/sql/test_selectable.py
index a3b2b0e93..99d0cbe76 100644
--- a/test/sql/test_selectable.py
+++ b/test/sql/test_selectable.py
@@ -5,6 +5,7 @@ from sqlalchemy.testing import eq_, assert_raises, \
 from sqlalchemy import *
 from sqlalchemy.testing import fixtures, AssertsCompiledSQL, \
     AssertsExecutionResults
+from sqlalchemy.sql import elements
 from sqlalchemy import testing
 from sqlalchemy.sql import util as sql_util, visitors, expression
 from sqlalchemy import exc
@@ -1934,6 +1935,29 @@ class AnnotationsTest(fixtures.TestBase):
         assert (c2 == 5).left._annotations == {"foo": "bar", "bat": "hoho"}
 
 
+class ReprTest(fixtures.TestBase):
+    def test_ensure_repr_elements(self):
+        for obj in [
+            elements.Cast(1, 2),
+            elements.TypeClause(String()),
+            elements.ColumnClause('x'),
+            elements.BindParameter('q'),
+            elements.Null(),
+            elements.True_(),
+            elements.False_(),
+            elements.ClauseList(),
+            elements.BooleanClauseList.and_(),
+            elements.Tuple(),
+            elements.Case([]),
+            elements.Extract('foo', column('x')),
+            elements.UnaryExpression(column('x')),
+            elements.Grouping(column('x')),
+            elements.Over(func.foo()),
+            elements.Label('q', column('x')),
+        ]:
+            repr(obj)
+
+
 class WithLabelsTest(fixtures.TestBase):
 
     def _assert_labels_warning(self, s):