Improved test structure

src/tests/custom/general/main.py

@@ -0,0 +1,8 @@
+from tests.custom.general.application import Application
+from tests.custom.general.startup import Startup
+
+if __name__ == '__main__':
+    app = Application()
+    app.use_startup(Startup)
+    app.build()
+    app.run()