Disable notifications while running unit tests

Summary:
Currently, we'll try to publish notifications while running tests. This is at best unnecessary and at worst problematic (we don't stub out the server).

For now, just never publish them.

Test Plan: Ran unit tests with notifications enabled but the server down and didn't get a bunch of warnings.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D10171

src/__phutil_library_map__.php

@@ -5055,6 +5055,7 @@ phutil_register_library_map(array(
       'PhabricatorFlaggableInterface',
       'PhabricatorTokenReceiverInterface',
       'PhabricatorProjectInterface',
+      'PhabricatorDestructibleInterface',
     ),
     'PhabricatorSlowvotePollController' => 'PhabricatorSlowvoteController',
     'PhabricatorSlowvotePollPHIDType' => 'PhabricatorPHIDType',

src/infrastructure/testing/PhabricatorTestCase.php

@@ -110,6 +110,12 @@ abstract class PhabricatorTestCase extends ArcanistPhutilTestCase {
       'phabricator.application-settings',
       array());
 
+    // We can't stub this service right now, and it's not generally useful
+    // to publish notifications about test execution.
+    $this->env->overrideEnvConfig(
+      'notification.enabled',
+      false);
+
     // TODO: Remove this when we remove "releeph.installed".
     $this->env->overrideEnvConfig('releeph.installed', true);
   }