I would call it 'test suite skipped', because, in fact, is skipping all the tests in the file. So that in the log we'll have something like:
```
info: addon-sdk: executing 'tests/test-ui-button.test suite skipped'
info: addon-sdk: pass: Unsupported Application version: 
The module tests/test-ui-button currently supports only version >= 25 of Firefox.
```