added new api call to check for backend version

fractalis/__init__.py

@@ -60,11 +60,13 @@ from fractalis.celeryapp import make_celery, register_tasks  # noqa
 celery = make_celery(app)
 
 # register blueprints
-from fractalis.analytics.controller import analytics_blueprint  # noqa
-from fractalis.data.controller import data_blueprint  # noqa
+from fractalis.analytics.controller import analytics_blueprint  # noqa: E402
+from fractalis.data.controller import data_blueprint  # noqa: E402
+from fractalis.misc.controller import misc_blueprint  # noqa: E402
 log.info("Registering Flask blueprints.")
 app.register_blueprint(analytics_blueprint, url_prefix='/analytics')
 app.register_blueprint(data_blueprint, url_prefix='/data')
+app.register_blueprint(misc_blueprint, url_prefix='/misc')
 
 # registering all application celery tasks
 log.info("Registering celery tasks.")

fractalis/misc/controller.py

+"""The /misc controller provides an API for everything that does not belong
+in any of the other categories."""
+
+import logging
+import pkg_resources
+from typing import Tuple
+
+from flask import Blueprint, jsonify, Response
+
+
+misc_blueprint = Blueprint('misc_blueprint', __name__)
+logger = logging.getLogger(__name__)
+
+
+@misc_blueprint.route('/version', methods=['GET'])
+def get_version() -> Tuple[Response, int]:
+    version = pkg_resources.require('fractalis')[0].version
+    return jsonify({'version': version}), 201

tests/functional/test_misc.py

+"""This module provides tests for the misc controller."""
+
+import re
+
+import flask
+import pytest
+
+
+class TestMisc:
+
+    @pytest.fixture(scope='function')
+    def test_client(self):
+        from fractalis import app
+        app.testing = True
+        with app.test_client() as test_client:
+            yield test_client
+
+    def test_get_version_returns_version(self, test_client):
+        rv = test_client.get('/misc/version')
+        body = flask.json.loads(rv.get_data())
+        assert re.match('^\d+.\d+.\d+$', body['version'])