wsgi_test.py: add tests for applications that yield

greentest/wsgi_test.py

@@ -48,6 +48,15 @@ def hello_world(env, start_response):
     return ["hello world"]
 
 
+def hello_world_yield(env, start_response):
+    if env['PATH_INFO'] == 'notexist':
+        start_response('404 Not Found', [('Content-type', 'text/plain')])
+        yield "not found"
+    else:
+        start_response('200 OK', [('Content-type', 'text/plain')])
+        yield "hello world"
+
+
 def chunked_app(env, start_response):
     start_response('200 OK', [('Content-type', 'text/plain')])
     yield "this"
@@ -242,6 +251,11 @@ class TestHttpdBasic(TestCase):
         fd.close()
 
 
+class TestYield(TestHttpdBasic):
+
+    application = staticmethod(hello_world_yield)
+
+
 class TestGetArg(TestCase):
 
     def application(self, env, start_response):