Added the first test case

pytest.ini

@@ -0,0 +1,3 @@
+[pytest]
+filterwarnings =
+    ignore:^Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working*:DeprecationWarning

requirements-dev.txt

@@ -0,0 +1 @@
+pytest

src/tests/__init__.py

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+import os
+os.environ['CAFF_PREVIEWER_ENDPOINT'] = ''
+os.environ['MINIO_ENDPOINT'] = ''
+os.environ['MINIO_ACCESS_KEY'] = ''
+os.environ['MINIO_SECRET_KEY'] = ''

src/tests/test_access_allowed.py

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+import pytest
+
+import app
+
+
+@pytest.fixture
+def client():
+    app.app.config['TESTING'] = True
+
+    with app.app.test_client() as client:
+        yield client
+
+
+def test_login_required(client):
+
+    r = client.get('/content/caff/1')
+
+    assert r.status_code == 302