1 files changed, 16 insertions, 1 deletions
diff --git a/test.py b/test.py
index 3c77c06..ed7d6e3 100755
--- a/test.py
+++ b/test.py
@@ -78,7 +78,7 @@ class Request:
             res.headersdata = headers
             return write
         iterator = app(self.environ, start_response)
-        self.returneddata = list(iterator)
+        res.returneddata = list(iterator)
         if hasattr(iterator, "close"):
             iterator.close()
         return res
@@ -235,6 +235,20 @@ class AuthDigestMiddlewareTest(unittest.TestCase):
 
 from wsgitools import middlewares
 
+def writing_application(environ, start_response):
+    write = start_response("404 Not found", [("Content-Type", "text/plain")])
+    write = start_response("200 Ok", [("Content-Type", "text/plain")])
+    write("first")
+    yield ""
+    yield "second"
+
+class NoWriteCallableMiddlewareTest(unittest.TestCase):
+    def testWrite(self):
+        app = middlewares.NoWriteCallableMiddleware(writing_application)
+        res = Request(self)(app)
+        self.assertEqual(res.writtendata, [])
+        self.assertEqual("".join(res.returneddata), "firstsecond")
+
 class StupidIO:
     """file-like without tell method, so StaticFile is not able to
     determine the content-length."""
@@ -324,6 +338,7 @@ fullsuite.addTest(alltests(StaticFileTest))
 fullsuite.addTest(alltests(AuthDigestMiddlewareTest))
 fullsuite.addTest(alltests(ContentLengthMiddlewareTest))
 fullsuite.addTest(alltests(BasicAuthMiddlewareTest))
+fullsuite.addTest(alltests(NoWriteCallableMiddlewareTest))
 
 if __name__ == "__main__":
     runner = unittest.TextTestRunner(verbosity=2)