Allow overriding backend in it's own config, fixes #30

ntfy/__init__.py

@@ -24,6 +24,11 @@ def notify(message, title, config=None, **kwargs):
     ret = 0
 
     for backend in config['backends']:
+        backend_config = config.get(backend, {})
+        backend_config.update(kwargs)
+        if 'backend' in backend_config:
+            backend = backend_config['backend']
+
         try:
             module = import_module('ntfy.backends.{}'.format(backend))
         except ImportError:
@@ -33,9 +38,6 @@ def notify(message, title, config=None, **kwargs):
                 exc_info=True)
             continue
 
-        backend_config = config.get(backend, {})
-        backend_config.update(kwargs)
-
         try:
             module.notify(message=message, title=title, **backend_config)
         except (SystemExit, KeyboardInterrupt):

tests/ntfy_test/__init__.py

@@ -1 +1,20 @@
+from unittest import TestCase
+
+from mock import patch
+
+from ntfy import notify
+
 from . import cli
+
+
+class OverrideBackendTestCase(TestCase):
+    @patch('requests.post')
+    def test_runcmd(self, mock_post):
+        ret = notify('message', 'title', {
+            'backends': ['foobar'],
+            'foobar': {
+                'backend': 'pushover',
+                'user_key': 't0k3n',
+            }
+        })
+        self.assertEqual(ret, 0)