Split out the auth handler

tests/rest/client/v2_alpha/test_register.py

@@ -33,7 +33,6 @@ class RegisterRestServletTestCase(unittest.TestCase):
 
         # do the dance to hook it up to the hs global
         self.handlers = Mock(
-            auth_handler=self.auth_handler,
             registration_handler=self.registration_handler,
             identity_handler=self.identity_handler,
             login_handler=self.login_handler
@@ -42,6 +41,7 @@ class RegisterRestServletTestCase(unittest.TestCase):
         self.hs.hostname = "superbig~testing~thing.com"
         self.hs.get_auth = Mock(return_value=self.auth)
         self.hs.get_handlers = Mock(return_value=self.handlers)
+        self.hs.get_auth_handler = Mock(return_value=self.auth_handler)
         self.hs.config.enable_registration = True
 
         # init the thing we're testing

tests/utils.py

@@ -81,16 +81,11 @@ def setup_test_homeserver(name="test", datastore=None, config=None, **kargs):
         )
 
     # bcrypt is far too slow to be doing in unit tests
-    def swap_out_hash_for_testing(old_build_handlers):
-        def build_handlers():
-            handlers = old_build_handlers()
-            auth_handler = handlers.auth_handler
-            auth_handler.hash = lambda p: hashlib.md5(p).hexdigest()
-            auth_handler.validate_hash = lambda p, h: hashlib.md5(p).hexdigest() == h
-            return handlers
-        return build_handlers
-
-    hs.build_handlers = swap_out_hash_for_testing(hs.build_handlers)
+    # Need to let the HS build an auth handler and then mess with it
+    # because AuthHandler's constructor requires the HS, so we can't make one
+    # beforehand and pass it in to the HS's constructor (chicken / egg)
+    hs.get_auth_handler().hash = lambda p: hashlib.md5(p).hexdigest()
+    hs.get_auth_handler().validate_hash = lambda p, h: hashlib.md5(p).hexdigest() == h
 
     fed = kargs.get("resource_for_federation", None)
     if fed: