Fixes #78

Now if a box object is given to dump, it will call `to_dict`
on it before attempting to serialize it with `json` or `yaml`.
This prevents random, interal box information from showing up.

tests/yapconf_test.py

@@ -2,6 +2,8 @@
 import os
 
 import pytest
+from box import Box
+from mock import patch
 
 import yapconf
 
@@ -111,6 +113,31 @@ def test_dump_data(tmpdir, data, file_type):
     assert data == yapconf.load_file(filename, file_type)
 
 
+def test_dump_box(ascii_data):
+    data = {'writes': ''}
+
+    def mock_write(x):
+        data['writes'] += x
+
+    writes = [
+        'db:\n',
+        '  name: db_name\n',
+        '  port: 123\n',
+        'foo: bar\n',
+        'items:\n',
+        '- 1\n',
+        '- 2\n',
+        '- 3\n',
+    ]
+
+    boxed_data = Box(ascii_data)
+    with patch('sys.stdout') as mock_stdout:
+        mock_stdout.write = mock_write
+        yapconf.dump_data(boxed_data, file_type='yaml')
+
+    assert data['writes'] == ''.join(writes)
+
+
 @pytest.mark.parametrize('original,expected', [
     ({}, {}),
     ({'foo': 'bar'}, {'foo': 'bar'}),

yapconf/__init__.py

@@ -6,6 +6,7 @@
 import sys
 
 import six
+from box import Box
 
 if sys.version_info.major < 3:
     from io import open
@@ -152,6 +153,9 @@ def _dump(data, stream, file_type, **kwargs):
             'encoding': 'utf-8'
         }
 
+    if isinstance(data, Box):
+        data = data.to_dict()
+
     if str(file_type).lower() == 'json':
         dumped = json.dumps(data, **kwargs)
         if isinstance(dumped, unicode):