# Running the Test Command with Multiple Domain Files

**URL:** <https://forum.rasa.com/t/running-the-test-command-with-multiple-domain-files/46412>\
**Category:** Rasa Open Source\
**Created:** [August 1, 2021, 10:10pm UTC](https://forum.rasa.com/t/running-the-test-command-with-multiple-domain-files/46412 "2021-08-01T22:10:05Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![lamxw2](https://avatars.discourse-cdn.com/v4/letter/l/f14d63/32.png) [@lamxw2](https://forum.rasa.com/u/lamxw2)\
**Post date:** [August 1, 2021, 10:10pm UTC](https://forum.rasa.com/t/running-the-test-command-with-multiple-domain-files/46412/1 "2021-08-01T22:10:05Z")

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Hi, I was trying to test NLU and core with multiple domain files. With NLU, I encountered the message “UserWarning: Loading domain from ‘domain.yml’ failed. Using empty domain.” Following the documentation to evaluate core, I ran ‘rasa train core --domain domain’ first and encountered the error “ValueError: Failed to find a reader class for the story file `data`. Supported formats are .md, .yml, .yaml.”

Running “rasa train --domain domain” works with no issues, but only fails with “rasa train core”. I had seen [Testing with split domain files = UserWarnings](http://forum.rasa.com/t/testing-with-split-domain-files-userwarnings/40837) and [Rasa test/rasa test core can't find any intent in domain · Issue #8135 · RasaHQ/rasa · GitHub](https://github.com/RasaHQ/rasa/issues/8135#issuecomment-832358117) which stated it should have been resolved. I’m using rasa 2.7.1 and rasa-sdk 2.7.0. Is the functionality available?