diff --git a/tests/search_index_result.json b/tests/search_index_result.json
new file mode 100644
index 0000000..bef46d0
--- /dev/null
+++ b/tests/search_index_result.json
@@ -0,0 +1,69 @@
+[
+  {
+    "id": "3",
+    "org": "",
+    "date": "2016-12-01",
+    "info": "Another random Event",
+    "published": false,
+    "uuid": "5758ebf5-c898-48e6-9fe9-5665c0a83866",
+    "attribute_count": "2",
+    "analysis": "0",
+    "orgc": "",
+    "timestamp": "1465681801",
+    "distribution": "3",
+    "proposal_email_lock": false,
+    "locked": false,
+    "threat_level_id": "1",
+    "publish_timestamp": "0",
+    "sharing_group_id": "0",
+    "org_id": "1",
+    "orgc_id": "1",
+    "Org": {
+      "id": "1",
+      "name": "ORGNAME"
+    },
+    "Orgc": {
+      "id": "1",
+      "name": "ORGNAME"
+    },
+    "EventTag": [
+      {
+        "id": "9760",
+        "event_id": "6028",
+        "tag_id": "4",
+        "Tag": {
+          "id": "4",
+          "name": "TLP:GREEN",
+          "colour": "#33822d",
+          "exportable": true
+        }
+      },
+      {
+        "id": "9801",
+        "event_id": "3",
+        "tag_id": "1",
+        "Tag": {
+          "id": "1",
+          "name": "for_intelmq_processing",
+          "colour": "#00ad1c",
+          "exportable": true
+        }
+      },
+      {
+        "id": "9803",
+        "event_id": "3",
+        "tag_id": "6",
+        "Tag": {
+          "id": "6",
+          "name": "ecsirt:malicious-code=\"ransomware\"",
+          "colour": "#005a5a",
+          "exportable": true
+        }
+      }
+    ],
+    "SharingGroup": {
+      "id": null,
+      "name": null
+    }
+  }
+]
diff --git a/tests/test_offline.py b/tests/test_offline.py
index b4854af..162b641 100644
--- a/tests/test_offline.py
+++ b/tests/test_offline.py
@@ -29,6 +29,7 @@ class TestOffline(unittest.TestCase):
         self.auth_error_msg = {"name": "Authentication failed. Please make sure you pass the API key of an API enabled user along in the Authorization header.",
                                "message": "Authentication failed. Please make sure you pass the API key of an API enabled user along in the Authorization header.",
                                "url": "\/events\/1"}
+        self.search_index_result = json.load(open('tests/search_index_result.json', 'r'))
 
     def initURI(self, m):
         m.register_uri('GET', self.domain + 'events/1', json=self.auth_error_msg, status_code=403)
@@ -40,6 +41,7 @@ class TestOffline(unittest.TestCase):
         m.register_uri('DELETE', self.domain + 'events/2', json={'message': 'Event deleted.'})
         m.register_uri('DELETE', self.domain + 'events/3', json={'errors': ['Invalid event'], 'message': 'Invalid event', 'name': 'Invalid event', 'url': '/events/3'})
         m.register_uri('DELETE', self.domain + 'attributes/2', json={'message': 'Attribute deleted.'})
+        m.register_uri('GET', self.domain + 'events/index/searchtag:1', json=self.search_index_result)
 
     def test_getEvent(self, m):
         self.initURI(m)
@@ -126,5 +128,11 @@ class TestOffline(unittest.TestCase):
         json.dumps(misp_event, cls=EncodeUpdate)
         json.dumps(misp_event, cls=EncodeFull)
 
+    def test_searchIndexByTag (self, m):
+        self.initURI(m)
+        pymisp = PyMISP(self.domain, self.key)
+        response = pymisp.search_index(tag="1")
+        self.assertEqual(response['response'],self.search_index_result)
+
 if __name__ == '__main__':
     unittest.main()