fix: Bottle - /api/%s/status endpoint

prob: failure in compressing `None` with zlib

glances/outputs/glances_bottle.py

@@ -230,7 +230,7 @@ class GlancesBottle(object):
         """
         response.status = 200
 
-        return None
+        return "Active"
 
     @compress
     def _api_help(self):

unitest-restful.py

@@ -221,6 +221,16 @@ class TestGlances(unittest.TestCase):
         self.assertIsInstance(req.json(), dict)
         self.assertIsInstance(req.json()['interface_name'], list)
 
+    def test_012_status(self):
+        """Check status endpoint."""
+        method = "status"
+        print('INFO: [TEST_012] Status')
+        print("HTTP RESTful request: %s/%s" % (URL, method))
+        req = self.http_get("%s/%s" % (URL, method))
+
+        self.assertTrue(req.ok)
+        self.assertEqual(req.text, "Active")
+
     def test_999_stop_server(self):
         """Stop the Glances Web Server."""
         print('INFO: [TEST_999] Stop the Glances Web Server')