Adding json serializer

vcr/serializers/jsonserializer.py

@@ -0,0 +1,31 @@
+from vcr.request import Request
+try:
+    import simplejson as json
+except ImportError:
+    import json
+
+def _json_default(obj):
+    if isinstance(obj, frozenset):
+        return dict(obj)
+    return obj
+
+def _fix_response_unicode(d):
+		d['body']['string'] = d['body']['string'].encode('utf-8')
+		return d
+
+class JSONSerializer(object):
+    @classmethod
+    def load(cls, cassette_path):
+        with open(cassette_path) as fh:
+            data = json.load(fh)
+        requests = [Request._from_dict(r['request']) for r in data]
+        responses = [_fix_response_unicode(r['response']) for r in data]
+        return requests, responses
+
+    @classmethod
+    def dumps(cls, requests, responses):
+        data = ([{
+            'request': request._to_dict(),
+            'response': response,
+        } for request, response in zip(requests, responses)])
+        return json.dumps(data, indent=4, default=_json_default)

vcr/serializers/yamlserializer.py

@@ -0,0 +1,24 @@
+import yaml
+
+# Use the libYAML versions if possible
+try:
+    from yaml import CLoader as Loader, CDumper as Dumper
+except ImportError:
+    from yaml import Loader, Dumper
+
+
+class YamlSerializer(object):
+    @classmethod
+    def load(cls, cassette_path):
+        data = yaml.load(open(cassette_path), Loader=Loader)
+        requests = [r['request'] for r in data]
+        responses = [r['response'] for r in data]
+        return requests, responses
+
+    @classmethod
+    def dumps(cls, requests, responses):
+        data = ([{
+            'request': request,
+            'response': response,
+        } for request, response in zip(requests, responses)])
+        return yaml.dump(data, Dumper=Dumper)