From b5a7ec15b05567f727309619e27709b0595d07f4 Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@liw.fi>
Date: Sat, 27 Oct 2018 10:18:11 +0300
Subject: Add: test for wrong signature

---
 muck/token_tests.py | 88 ++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 71 insertions(+), 17 deletions(-)

diff --git a/muck/token_tests.py b/muck/token_tests.py
index 9530d83..9fd8bca 100644
--- a/muck/token_tests.py
+++ b/muck/token_tests.py
@@ -24,6 +24,16 @@ class TokenCheckerTests(unittest.TestCase):
     def setUp(self):
         self.tc = muck.TokenChecker(muck.test_key_text.strip().encode('ascii'))
 
+    def create_token(self, time_delta, key_text):
+        claims = {
+            'sub': 'subject-1',
+            'scopes': 'scope-1',
+            'iss': 'issuer-1',
+            'aud': 'audience-1',
+            'exp': time.time() + time_delta,
+        }
+        return claims, muck.create_token(claims, key_text)
+
     def test_rejects_no_authorization_header(self):
         with self.assertRaises(muck.Error):
             self.tc.parse_header(None)
@@ -45,29 +55,73 @@ class TokenCheckerTests(unittest.TestCase):
             self.tc.parse_header('Bearer XXX')
 
     def test_rejects_expired_token(self):
-        claims = {
-            'sub': 'subject-1',
-            'scopes': 'scope-1',
-            'iss': 'issuer-1',
-            'aud': 'audience-1',
-            'exp': time.time() - 3600,
-        }
+        _, token = self.create_token(-3600, muck.test_key_text)
+        header = 'Bearer {}'.format(token)
+        with self.assertRaises(muck.Error):
+            self.tc.parse_header(header)
 
-        token = muck.create_token(claims, muck.test_key_text)
+    def test_rejects_signature_from_unknown_key(self):
+        _, token = self.create_token(3600, other_key_text)
         header = 'Bearer {}'.format(token)
         with self.assertRaises(muck.Error):
             self.tc.parse_header(header)
 
     def test_accepts_valid_token(self):
-        claims = {
-            'sub': 'subject-1',
-            'scopes': 'scope-1',
-            'iss': 'issuer-1',
-            'aud': 'audience-1',
-            'exp': time.time() + 3600,
-        }
-
-        token = muck.create_token(claims, muck.test_key_text)
+        claims, token = self.create_token(3600, muck.test_key_text)
         header = 'Bearer {}'.format(token)
         parsed = self.tc.parse_header(header)
         self.assertEqual(claims, parsed)
+
+
+other_key_text = '''\
+-----BEGIN RSA PRIVATE KEY-----
+MIIJKQIBAAKCAgEA0y6hh3iWS8Ap5E+qB5MjnSoaa1WHhSuRJ57gsD7rdYNq6jnJ
+mwfNG8n3OaepIYsEROvw5N19cjGW35czVS3PYrvibyg8mP0cAGzl4SI+WFLYfiBj
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+RFsENfhOq2PeGLDEgAibhaPGvNCU+mvLy+VAAGPnCz7munB6B1whcAAmgkj7
+-----END RSA PRIVATE KEY-----'''
-- 
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