1 files changed, 34 insertions, 0 deletions
diff --git a/lib/python2.7/json/tests/test_check_circular.py b/lib/python2.7/json/tests/test_check_circular.py
new file mode 100644
index 0000000..3ad3d24
--- /dev/null
+++ b/lib/python2.7/json/tests/test_check_circular.py
@@ -0,0 +1,34 @@
+from json.tests import PyTest, CTest
+
+
+def default_iterable(obj):
+    return list(obj)
+
+class TestCheckCircular(object):
+    def test_circular_dict(self):
+        dct = {}
+        dct['a'] = dct
+        self.assertRaises(ValueError, self.dumps, dct)
+
+    def test_circular_list(self):
+        lst = []
+        lst.append(lst)
+        self.assertRaises(ValueError, self.dumps, lst)
+
+    def test_circular_composite(self):
+        dct2 = {}
+        dct2['a'] = []
+        dct2['a'].append(dct2)
+        self.assertRaises(ValueError, self.dumps, dct2)
+
+    def test_circular_default(self):
+        self.dumps([set()], default=default_iterable)
+        self.assertRaises(TypeError, self.dumps, [set()])
+
+    def test_circular_off_default(self):
+        self.dumps([set()], default=default_iterable, check_circular=False)
+        self.assertRaises(TypeError, self.dumps, [set()], check_circular=False)
+
+
+class TestPyCheckCircular(TestCheckCircular, PyTest): pass
+class TestCCheckCircular(TestCheckCircular, CTest): pass