1 files changed, 6 insertions, 0 deletions
diff --git a/Lib/test/test_decimal.py b/Lib/test/test_decimal.py
index 7c607f9..a76b505 100644
--- a/Lib/test/test_decimal.py
+++ b/Lib/test/test_decimal.py
@@ -1303,6 +1303,12 @@ class DecimalUsabilityTest(unittest.TestCase):
         d = d1.max(d2)
         self.assertTrue(type(d) is Decimal)
 
+    def test_implicit_context(self):
+        # Check results when context given implicitly.  (Issue 2478)
+        c = getcontext()
+        self.assertEqual(str(Decimal(0).sqrt()),
+                         str(c.sqrt(Decimal(0))))
+
 
 class DecimalPythonAPItests(unittest.TestCase):