added tests

tests/app_test.py

@@ -0,0 +1,9 @@
+import pytest
+import requests
+
+
+url = 'http://127.0.0.1:5000'  # The root url of the flask app
+
+def test_index_page():
+    r = requests.get(url+'/')  # Assumses that it has a path of "/"
+    assert r.status_code == 200  # Assumes that it will return a 200 response