Tests: reworked python tests with application.

test/python/mirror/wsgi.py

@@ -0,0 +1,10 @@
+def application(environ, start_response):
+
+    content_length = int(environ.get('CONTENT_LENGTH', 0))
+    body = bytes(environ['wsgi.input'].read(content_length))
+
+    start_response('200', [
+        ('Content-Type', environ.get('CONTENT_TYPE')),
+        ('Content-Length', str(len(body)))
+    ])
+    return [body]