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react/scripts/jest
Andrew Clark 349cf5acc3 Experimental test helper: it.experimental (#17149)
Special version of Jest's `it` for experimental tests. Tests marked as
experimental will run **both** stable and experimental modes. In
experimental mode, they work the same as the normal Jest methods. In
stable mode, they are **expected to fail**. This means we can detect
when a test previously marked as experimental can be un-marked when the
feature becomes stable. It also reduces the chances that we accidentally
add experimental APIs to the stable builds before we intend.

I added corresponding methods for the focus and skip APIs:

- `fit` -> `fit.experimental`
- `it.only` -> `it.only.experimental` or `it.experimental.only`
- `xit` -> `xit.experimental`
- `it.skip` -> `it.skip.experimental` or `it.experimental.skip`

Since `it` is an alias of `test`, `test.experimental` works, too.
2019-10-19 16:08:08 -07:00
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2017-11-23 18:02:47 +00:00