Add tests to marshall double with xmlrpc.client.

Lib/test/test_xmlrpc.py

@@ -154,6 +154,22 @@ class XMLRPCTestCase(unittest.TestCase):
         self.assertRaises(OverflowError, m.dump_int,
                           xmlrpclib.MININT-1, dummy_write)
 
+    def test_dump_double(self):
+        xmlrpclib.dumps((float(2 ** 34),))
+        xmlrpclib.dumps((float(xmlrpclib.MAXINT),
+                         float(xmlrpclib.MININT)))
+        xmlrpclib.dumps((float(xmlrpclib.MAXINT + 42),
+                         float(xmlrpclib.MININT - 42)))
+
+        def dummy_write(s):
+            pass
+
+        m = xmlrpclib.Marshaller()
+        m.dump_double(xmlrpclib.MAXINT, dummy_write)
+        m.dump_double(xmlrpclib.MININT, dummy_write)
+        m.dump_double(xmlrpclib.MAXINT + 42, dummy_write)
+        m.dump_double(xmlrpclib.MININT - 42, dummy_write)
+
     def test_dump_none(self):
         value = alist + [None]
         arg1 = (alist + [None],)