Add a FakeProxy to ease the tests.

vaurien/tests/support.py

@@ -0,0 +1,36 @@
+import sys
+
+from vaurien.webserver import create_app
+
+from gevent.wsgi import WSGIServer
+
+
+class FakeProxy(object):
+    """Fake proxy object, to mock the proxy in the tests"""
+
+    def __init__(self, handlers=None):
+        self.handlers = handlers or ['default', 'blackout']
+        self.handler = 'default'
+
+    def get_handler(self):
+        # return None as a callable, since this is for tests only.
+        return None, self.handler
+
+    def set_handler(self, name, **options):
+        self.handler = name
+
+    def get_handler_names(self):
+        return self.handlers
+
+
+def start_vaurien_httpserver(port):
+    """Start a vaurien httpserver, controlling a fake proxy"""
+    app = create_app()
+    setattr(app, 'proxy', FakeProxy())
+
+    server = WSGIServer(('localhost', int(port)), app)
+    server.serve_forever()
+
+
+if __name__ == '__main__':
+    start_vaurien_httpserver(int(sys.argv[1]))