BUG24953913: Fix SSL connection failing tests

This patch fixes the connection error using older Python versions
or when using a non SSL enabled connection settings and the Python
installation doesn't have support for SSL.

The SSL connection tests were disabled for Python versions < 2.7.9.

Author: nmariz

lib/mysqlx/connection.py

@@ -29,6 +29,7 @@
 except:
     SSL_AVAILABLE = False
 
+import sys
 import socket
 
 from functools import wraps
@@ -84,6 +85,11 @@ def set_ssl(self, ssl_opts={}):
             self.close()
             raise RuntimeError("Python installation has no SSL support.")
 
+        if sys.version_info < (2, 7, 9):
+            self.close()
+            raise RuntimeError("The support for SSL is not available for this "
+                               "Python version.")
+
         context = ssl.SSLContext(ssl.PROTOCOL_SSLv23)
         context.load_default_certs()
         if "ssl-ca" in ssl_opts:
@@ -163,8 +169,10 @@ def _handle_capabilities(self):
                 raise OperationalError("SSL not enabled at server.")
             return
 
-        self.protocol.set_capabilities(tls=True)
-        self.stream.set_ssl(self.settings)
+        ssl_opts_keys = ("ssl-ca", "ssl-crl", "ssl-cert", "ssl-key",)
+        if any(key in self.settings for key in ssl_opts_keys):
+            self.protocol.set_capabilities(tls=True)
+            self.stream.set_ssl(self.settings)
 
     def _authenticate(self):
         plugin = MySQL41AuthPlugin(self._user, self._password)

tests/test_mysqlx_connection.py

@@ -27,7 +27,7 @@
 
 import logging
 import unittest
-
+import sys
 import tests
 import mysqlx
 
@@ -320,6 +320,8 @@ def test_bind_to_default_shard(self):
                 tests.MYSQL_SERVERS[0].start()
                 tests.MYSQL_SERVERS[0].wait_up()
 
+    @unittest.skipIf(sys.version_info < (2, 7, 9), "The support for SSL is "
+                     "not available for Python versions < 2.7.9.")
     def test_ssl_connection(self):
         config = {}
         config.update(self.connect_kwargs)
@@ -492,6 +494,8 @@ def test_commit(self):
 
         schema.drop_table(table_name)
 
+    @unittest.skipIf(sys.version_info < (2, 7, 9), "The support for SSL is "
+                     "not available for Python versions < 2.7.9.")
     def test_ssl_connection(self):
         config = {}
         config.update(self.connect_kwargs)