# forge.testing.assert_stable_warmup

```python
forge.testing.assert_stable_warmup(strategy: str | os.PathLike[str] | type[Strategy], bars: SampleBars | pd.DataFrame | None = None, params: Mapping[str, Any] | None = None, **kwargs: Any) -> None
```

Fail unless every output of the strategy is stable at its declared warm-up.

The failure names each flagged output with the note that says what to change. An inconclusive
check fails too, with its reason. The arguments are those of ``check_warmup``.

Since Forge API 1.