import unittest from test import support import smtplib import socket ssl = support.import_module("ssl") support.requires("network") def check_ssl_verifiy(host, port): context = ssl.create_default_context() with socket.create_connection((host, port)) as sock: try: sock = context.wrap_socket(sock, server_hostname=host) except Exception: return False else: sock.close() return True class SmtpTest(unittest.TestCase): testServer = 'smtp.gmail.com' remotePort = 25 def test_connect_starttls(self): support.get_attribute(smtplib, 'SMTP_SSL') context = ssl.SSLContext(ssl.PROTOCOL_SSLv23) with support.transient_internet(self.testServer): server = smtplib.SMTP(self.testServer, self.remotePort) try: server.starttls(context=context) except smtplib.SMTPException as e: if e.args[0] == 'STARTTLS extension not supported by server.': unittest.skip(e.args[0]) else: raise server.ehlo() server.quit() class SmtpSSLTest(unittest.TestCase): testServer = 'smtp.gmail.com' remotePort = 465 can_verify = check_ssl_verifiy(testServer, remotePort) def test_connect(self): support.get_attribute(smtplib, 'SMTP_SSL') with support.transient_internet(self.testServer): server = smtplib.SMTP_SSL(self.testServer, self.remotePort) server.ehlo() server.quit() def test_connect_default_port(self): support.get_attribute(smtplib, 'SMTP_SSL') with support.transient_internet(self.testServer): server = smtplib.SMTP_SSL(self.testServer) server.ehlo() server.quit() def test_connect_using_sslcontext(self): context = ssl.SSLContext(ssl.PROTOCOL_SSLv23) support.get_attribute(smtplib, 'SMTP_SSL') with support.transient_internet(self.testServer): server = smtplib.SMTP_SSL(self.testServer, self.remotePort, context=context) server.ehlo() server.quit() @unittest.skipUnless(can_verify, "SSL certificate can't be verified") def test_connect_using_sslcontext_verified(self): support.get_attribute(smtplib, 'SMTP_SSL') context = ssl.create_default_context() with support.transient_internet(self.testServer): server = smtplib.SMTP_SSL(self.testServer, self.remotePort, context=context) server.ehlo() server.quit() def test_main(): support.run_unittest(SmtpTest, SmtpSSLTest) if __name__ == "__main__": test_main()