From 2591abd535da78bf4b8a8faa751a3784850eb8b6 Mon Sep 17 00:00:00 2001
From: Seth Schoen <schoen@eff.org>
Date: Mon, 9 Feb 2015 14:25:18 -0800
Subject: [PATCH] Change assertion to a ValueError in signal handler

---
 letsencrypt/client/standalone_authenticator.py            | 2 +-
 letsencrypt/client/tests/standalone_authenticator_test.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/letsencrypt/client/standalone_authenticator.py b/letsencrypt/client/standalone_authenticator.py
index 7723c840d..646afc6a8 100644
--- a/letsencrypt/client/standalone_authenticator.py
+++ b/letsencrypt/client/standalone_authenticator.py
@@ -60,7 +60,7 @@ class StandaloneAuthenticator(object):
             self.subproc_state = "cantbind"
         else:
             # NOTREACHED
-            assert False
+            raise ValueError("Unexpected signal in signal handler")
 
     def subproc_signal_handler(self, sig, unused_frame):
         """Signal handler for the child process.
diff --git a/letsencrypt/client/tests/standalone_authenticator_test.py b/letsencrypt/client/tests/standalone_authenticator_test.py
index 9a035a3da..7bb15d5f0 100644
--- a/letsencrypt/client/tests/standalone_authenticator_test.py
+++ b/letsencrypt/client/tests/standalone_authenticator_test.py
@@ -123,7 +123,7 @@ class ClientSignalHandlerTest(unittest.TestCase):
         # function is only set as a signal handler for the above three
         # signals).
         self.assertRaises(
-            AssertionError, self.authenticator.client_signal_handler,
+            ValueError, self.authenticator.client_signal_handler,
             signal.SIGPIPE, None)