eth2.0-specs/specs/test_formats/sanity/slots.md

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# Sanity slots testing
Sanity tests to cover a series of one or more empty-slot transitions being processed, aiming to cover common changes.
## Test case format
### `meta.yaml`
```yaml
description: string -- Optional. Description of test case, purely for debugging purposes.
bls_setting: int -- see general test-format spec.
```
### `pre.yaml`
A YAML-encoded `BeaconState`, the state before running the transitions.
Also available as `pre.ssz`.
### `slots.yaml`
An integer. The amount of slots to process (i.e. the difference in slots between pre and post), always a positive number.
### `post.yaml`
A YAML-encoded `BeaconState`, the state after applying the transitions.
Also available as `post.ssz`.
### Processing
The transition with pure time, no blocks, is known as `process_slots(state, slot)` in the spec.
This runs state-caching (pure slot transition) and epoch processing (every E slots).
To process the data, call `process_slots(pre, pre.slot + N)`.
## Condition
The resulting state should match the expected `post` state.