Add health check endpoint (#329)

* Add health check endpoint

* Add assertion on  status

snappass/main.py

@@ -202,6 +202,12 @@ def show_password(password_key):
     return render_template('password.html', password=password)
 
 
+@app.route('/_/_/health', methods=['GET'])
+@check_redis_alive
+def health_check():
+    return {}
+
+
 @check_redis_alive
 def main():
     app.run(host='0.0.0.0')

tests.py

@@ -106,6 +106,11 @@ def setUp(self):
         snappass.app.config['TESTING'] = True
         self.app = snappass.app.test_client()
 
+    def test_health_check(self):
+        response = self.app.get('/_/_/health')
+        self.assertEqual('200 OK', response.status)
+        self.assertEqual('{}', response.get_data(as_text=True).strip())
+
     def test_preview_password(self):
         password = "I like novelty kitten statues!"
         key = snappass.set_password(password, 30)