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Yield the pre state for this test type before making blocks #2672

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Oct 15, 2021
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Yield the pre state for this test type before making blocks #2672

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21 changes: 10 additions & 11 deletions tests/core/pyspec/eth2spec/test/helpers/fork_transition.py
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Original file line number Diff line number Diff line change
Expand Up @@ -244,15 +244,6 @@ def run_transition_with_operation(state,
signed_exits = prepare_signed_exits(spec, state, [selected_validator_index])
operation_dict = {'voluntary_exits': signed_exits}

blocks = []

if is_right_before_fork:
# add a block with operation.
block = build_empty_block_for_next_slot(spec, state)
_set_operations_by_dict(block, operation_dict)
signed_block = state_transition_and_sign_block(spec, state, block)
blocks.append(pre_tag(signed_block))

def _check_state():
if operation_type == OperationType.PROPOSER_SLASHING:
slashed_proposer = state.validators[proposer_slashing.signed_header_1.message.proposer_index]
Expand All @@ -274,10 +265,18 @@ def _check_state():
validator = state.validators[selected_validator_index]
assert validator.exit_epoch < post_spec.FAR_FUTURE_EPOCH

yield "pre", state

blocks = []

if is_right_before_fork:
_check_state()
# add a block with operation.
block = build_empty_block_for_next_slot(spec, state)
_set_operations_by_dict(block, operation_dict)
signed_block = state_transition_and_sign_block(spec, state, block)
blocks.append(pre_tag(signed_block))

yield "pre", state
_check_state()

# irregular state transition to handle fork:
_operation_at_slot = operation_dict if is_at_fork else None
Expand Down