some test cases for the new code that will probably fail

tests/functional/test_state.py

+"""This module tests the state controller module."""
+
+from uuid import UUID, uuid4
+import flask
+import pytest
+
+from fractalis import redis, sync
+
+
+# noinspection PyMissingOrEmptyDocstring,PyMissingTypeHints
+class TestState:
+
+    @pytest.fixture(scope='function')
+    def test_client(self):
+        sync.cleanup_all()
+        from fractalis import app
+        app.testing = True
+        with app.test_client() as test_client:
+            yield test_client
+            sync.cleanup_all()
+
+    def test_save_state_saves_and_returns(self, test_client):
+        rv = test_client.post('/state', data=flask.json.dumps('test'))
+        body = flask.json.loads(rv.get_data())
+        assert rv.status_code == 201, body
+        assert UUID(body['state_id'])
+        assert redis.get('state:{}'.format(body['state_id'])) == 'test'
+
+    def test_404_if_request_invalid_state_id(self, test_client):
+        rv = test_client.post('/state/{}'.format(str(uuid4())))
+        assert rv.status_code == 404
+
+    def test_error_if_state_id_is_no_uuid(self, test_client):
+        rv = test_client.post('/state/123')
+        assert rv.status_code == 400
+
+    def test_error_if_task_id_is_no_etl_id(self, test_client):
+        uuid = str(uuid4())
+        redis.set('state:{}'.format(uuid), 'foo')
+        rv = test_client.post('/state/{}'.format(uuid))
+        body = flask.json.loads(rv.get_data())
+        assert rv.status_code == 400, body
+        assert 'error' in body
+        assert 'given payload cannot be saved' in body['error']
+
+    def test_201_and_valid_state_if_valid_conditions(self, test_client):
+        uuid = str(uuid4())
+        redis.set('state:{}'.format(uuid), {'meta': {'descriptor': 'foo'}})
+        rv = test_client.post('/state/{}'.format(uuid))
+        assert rv.status_code == 201
+        with test_client.session_transaction() as sess:
+            assert sess['data_tasks']
+            assert sess['state_access']
+            assert sess['data_tasks'] == sess['state_access']
+            assert [UUID(uuid) for id in sess['data_tasks']]
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