add cninfo announcement

tests/base.py

@@ -1,15 +1,15 @@
-import unittest
-from flask import url_for
-from rsshub import create_app
-
-
-class BaseTestCase(unittest.TestCase):
-    def setUp(self):
-        app = create_app('testing')
-        self.context = app.test_request_context()
-        self.context.push()
-        self.client = app.test_client()
-        self.runner = app.test_cli_runner()
-
-    def tearDown(self):
-        self.context.pop()
+import unittest
+from flask import url_for
+from rsshub import create_app
+
+
+class BaseTestCase(unittest.TestCase):
+    def setUp(self):
+        app = create_app('testing')
+        self.context = app.test_request_context()
+        self.context.push()
+        self.client = app.test_client()
+        self.runner = app.test_cli_runner()
+
+    def tearDown(self):
+        self.context.pop()