Added test for dump and load for file like objects

serialize/all.py

@@ -18,14 +18,15 @@
 ClassHelper = namedtuple('ClassHelper', 'to_builtin from_builtin')
 
 #: Stores information and function about each format type.
-FormatHelper = namedtuple('Format', 'extension dump dumps load loads')
+Format = namedtuple('Format', 'extension dump dumps load loads')
+UnavailableFormat = namedtuple('UnavailableFormat', 'extension msg')
 
 #: Map unavailable formats to the corresponding error message.
-# :type: str -> str
+# :type: str -> UnavailableFormat
 UNAVAILABLE_FORMATS = {}
 
 #: Map available format names to the corresponding dumper and loader.
-# :type: str -> FormatHelper
+# :type: str -> Format
 FORMATS = {}
 
 #: Map extension to format name.
@@ -260,13 +261,13 @@ def raiser(*args, **kwargs):
     if extension is MISSING:
         extension = fmt
 
-    FORMATS[fmt] = FormatHelper(extension, dumper, dumpser, loader, loadser)
+    FORMATS[fmt] = Format(extension, dumper, dumpser, loader, loadser)
 
     if extension:
         FORMAT_BY_EXTENSION[extension.lower()] = fmt
 
 
-def register_unavailable(fmt, msg='', pkg=''):
+def register_unavailable(fmt, msg='', pkg='', extension=MISSING):
     """Register an unavailable serialization format.
 
     Unavailable formats are those known by Serialize but that cannot be used
@@ -276,7 +277,14 @@ def register_unavailable(fmt, msg='', pkg=''):
     if pkg:
         msg = 'This serialization format requires the %s package.' % pkg
 
-    UNAVAILABLE_FORMATS[fmt] = msg
+
+    if extension is MISSING:
+        extension = fmt
+
+    FORMATS[fmt] = UnavailableFormat(extension, msg)
+
+    if extension:
+        FORMAT_BY_EXTENSION[extension.lower()] = fmt
 
 
 def dumps(obj, fmt):

serialize/testsuite/test_basic.py

@@ -1,4 +1,5 @@
 
+import io
 import os
 from unittest import TestCase, skipIf
 
@@ -69,7 +70,23 @@ class _TestEncoderDecoder:
     FMT = None
 
     def _test_round_trip(self, obj):
-        self.assertEqual(obj, loads(dumps(obj, self.FMT), self.FMT))
+
+        dumped = dumps(obj, self.FMT)
+
+        # dumps / loads
+        self.assertEqual(obj, loads(dumped, self.FMT))
+
+        buf = io.BytesIO()
+        dump(obj, buf, self.FMT)
+
+        # dump / dumps
+        self.assertEqual(dumped, buf.getvalue())
+
+        buf.seek(0)
+        # dump / load
+        self.assertEqual(obj, load(buf, self.FMT))
+
+
 
     def test_format_from_ext(self):
         if ':' in self.FMT: