deserialize data form media type

openapi_core/deserializing/media_types/factories.py

@@ -1,4 +1,6 @@
-from openapi_core.deserializing.media_types.util import json_loads, form_loads
+from openapi_core.deserializing.media_types.util import (
+    json_loads, urlencoded_form_loads, data_form_loads,
+)
 
 from openapi_core.deserializing.media_types.deserializers import (
     PrimitiveDeserializer,
@@ -9,7 +11,8 @@ class MediaTypeDeserializersFactory(object):
 
     MEDIA_TYPE_DESERIALIZERS = {
         'application/json': json_loads,
-        'application/x-www-form-urlencoded': form_loads,
+        'application/x-www-form-urlencoded': urlencoded_form_loads,
+        'multipart/form-data': data_form_loads,
     }
 
     def __init__(self, custom_deserializers=None):

openapi_core/deserializing/media_types/util.py

@@ -1,3 +1,4 @@
+from email.parser import BytesParser
 from json import loads
 
 from six import binary_type
@@ -11,5 +12,19 @@ def json_loads(value):
     return loads(value)
 
 
-def form_loads(value):
+def urlencoded_form_loads(value):
     return dict(parse_qsl(value))
+
+
+def data_form_loads(value):
+    if issubclass(type(value), str):
+        value = value.encode()
+    parser = BytesParser()
+    parts = parser.parsebytes(value)
+    return dict(
+        (
+            part.get_param('name', header='content-disposition'),
+            part.get_payload(decode=True),
+        )
+        for part in parts.get_payload()
+    )

tests/unit/deserializing/test_media_types_deserializers.py

@@ -1,3 +1,6 @@
+from email.mime.multipart import MIMEMultipart
+from email.mime.nonmultipart import MIMENonMultipart
+
 import pytest
 
 from openapi_core.deserializing.exceptions import DeserializeError
@@ -7,6 +10,24 @@ from openapi_core.deserializing.media_types.factories import (
 from openapi_core.schema.media_types.models import MediaType
 
 
+class MIMEFormdata(MIMENonMultipart):
+    def __init__(self, keyname, *args, **kwargs):
+        super(MIMEFormdata, self).__init__(*args, **kwargs)
+        self.add_header(
+            "Content-Disposition", "form-data; name=\"%s\"" % keyname)
+
+
+def encode_multipart_formdata(fields):
+    m = MIMEMultipart("form-data")
+
+    for field, value in fields.items():
+        data = MIMEFormdata(field, "text", "plain")
+        data.set_payload(value)
+        m.attach(data)
+
+    return m
+
+
 class TestMediaTypeDeserializer(object):
 
     @pytest.fixture
@@ -31,7 +52,7 @@ class TestMediaTypeDeserializer(object):
 
         assert result == {}
 
-    def test_form_urlencoded_empty(self, deserializer_factory):
+    def test_urlencoded_form_empty(self, deserializer_factory):
         media_type = MediaType('application/x-www-form-urlencoded')
         value = ''
 
@@ -39,7 +60,7 @@ class TestMediaTypeDeserializer(object):
 
         assert result == {}
 
-    def test_form_urlencoded_simple(self, deserializer_factory):
+    def test_urlencoded_form_simple(self, deserializer_factory):
         media_type = MediaType('application/x-www-form-urlencoded')
         value = 'param1=test'
 
@@ -47,6 +68,23 @@ class TestMediaTypeDeserializer(object):
 
         assert result == {'param1': 'test'}
 
+    @pytest.mark.parametrize('value', [b'', ''])
+    def test_data_form_empty(self, deserializer_factory, value):
+        media_type = MediaType('multipart/form-data')
+
+        result = deserializer_factory(media_type)(value)
+
+        assert result == {}
+
+    def test_data_form_simple(self, deserializer_factory):
+        media_type = MediaType('multipart/form-data')
+        formdata = encode_multipart_formdata({'param1': 'test'})
+        value = str(formdata)
+
+        result = deserializer_factory(media_type)(value)
+
+        assert result == {'param1': b'test'}
+
     def test_custom_simple(self, deserializer_factory):
         custom_mimetype = 'application/custom'
         media_type = MediaType(custom_mimetype)