diff -r 12a97d1c6015 -r c9f1111e0ee8 wsgi/test/unittest_wsgi.py
--- a/wsgi/test/unittest_wsgi.py	Mon Sep 01 14:56:00 2014 +0200
+++ b/wsgi/test/unittest_wsgi.py	Mon Sep 15 17:23:22 2014 +0200
@@ -6,6 +6,7 @@
 from cubicweb.devtools.webtest import CubicWebTestTC
 
 from cubicweb.wsgi.request import CubicWebWsgiRequest
+from cubicweb.multipart import MultipartError
 
 
 class WSGIAppTC(CubicWebTestTC):
@@ -66,6 +67,19 @@
             '/',
             params={'__login': self.admlogin, '__password': self.admpassword})
 
+    def test_post_bad_form(self):
+        with self.assertRaises(MultipartError):
+            self.webapp.post(
+                '/',
+                params='badcontent',
+                headers={'Content-Type': 'multipart/form-data'})
+
+    def test_post_non_form(self):
+        self.webapp.post(
+            '/',
+            params='{}',
+            headers={'Content-Type': 'application/json'})
+
     def test_get_multiple_variables(self):
         r = webtest.app.TestRequest.blank('/?arg=1&arg=2')
         req = CubicWebWsgiRequest(r.environ, self.vreg)