Don't send null parameters when posting

fixes #250

tests/test_console.py

@@ -42,11 +42,7 @@ def test_post_defaults(mock_post, mock_uuid, capsys):
         'status': 'Hello world',
         'visibility': 'public',
         'media_ids': [],
-        'sensitive': "false",
-        'spoiler_text': None,
-        'in_reply_to_id': None,
-        'language': None,
-        'scheduled_at': None,
+        'sensitive': False,
     }, headers={"Idempotency-Key": "rock-on"})
 
     out, err = capsys.readouterr()
@@ -78,11 +74,10 @@ def test_post_with_options(mock_post, mock_uuid, capsys):
         'status': 'Hello world',
         'media_ids': [],
         'visibility': 'unlisted',
-        'sensitive': "true",
+        'sensitive': True,
         'spoiler_text': "Spoiler!",
         'in_reply_to_id': '123a',
         'language': 'hrv',
-        'scheduled_at': None,
     }, headers={"Idempotency-Key": "up-the-irons"})
 
     out, err = capsys.readouterr()

toot/api.py

@@ -140,15 +140,17 @@ def post_status(
         'status': status,
         'media_ids': media_ids,
         'visibility': visibility,
-        'sensitive': str_bool(sensitive),
-        'spoiler_text': spoiler_text,
+        'sensitive': sensitive,
         'in_reply_to_id': in_reply_to_id,
         'language': language,
-        'scheduled_at': scheduled_at
+        'scheduled_at': scheduled_at,
+        'content_type': content_type,
+        'spoiler_text': spoiler_text
     }
 
-    if content_type:
-        json['content_type'] = content_type
+    # Strip keys for which value is None
+    # Sending null values doesn't bother Mastodon, but it breaks Pleroma
+    json = {k: v for k, v in json.items() if v is not None}
 
     return http.post(app, user, '/api/v1/statuses', json=json, headers=headers).json()