Tests: configuration of environment variables.

test/python/environment/wsgi.py

@@ -0,0 +1,13 @@
+import os
+
+def application(env, start_response):
+    body = ''
+    vars = env.get('HTTP_X_VARIABLES').split(',')
+
+    for var in vars:
+        if var in os.environ:
+            body += str(os.environ[var]) + ','
+
+    body = body.encode()
+    start_response('200', [('Content-Length', str(len(body)))])
+    return body