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Make compute_new_state_root a pure function

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Hsiao-Wei Wang 2020-04-27 22:05:47 +08:00
parent d311248d35
commit 2dbc333270
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2 changed files with 5 additions and 3 deletions
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7
specs/phase0/validator.md
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@ -340,9 +340,10 @@ It is useful to be able to run a state transition function (working on a copy of
```python ```python
def compute_new_state_root(state: BeaconState, block: BeaconBlock) -> Root: def compute_new_state_root(state: BeaconState, block: BeaconBlock) -> Root:
process_slots(state, block.slot) temp_state: BeaconState = state.copy()
process_block(state, block) signed_block = SignedBeaconBlock(message=block)
return hash_tree_root(state) temp_state = state_transition(temp_state, signed_block, validate_result=False)
return hash_tree_root(temp_state)
``` ```
##### Signature ##### Signature

1
tests/core/pyspec/eth2spec/test/validator/test_validator_unittest.py
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@ -246,6 +246,7 @@ def test_compute_new_state_root(spec, state):
state_root = spec.compute_new_state_root(state, block) state_root = spec.compute_new_state_root(state, block)
assert state_root != pre_state.hash_tree_root() assert state_root != pre_state.hash_tree_root()
assert state == pre_state
# dumb verification # dumb verification
spec.process_slots(post_state, block.slot) spec.process_slots(post_state, block.slot)