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Merged
tcoratger merged 1 commit into from
Jan 16, 2026
Merged

tests: move genesis block hash comparison to unit test #292

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112 changes: 2 additions & 110 deletions tests/consensus/devnet/state_transition/test_genesis.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10,19 +10,17 @@
import pytest
from consensus_testing import StateExpectation, StateTransitionTestFiller, generate_pre_state

from lean_spec.subspecs.containers.block import Block, BlockBody
from lean_spec.subspecs.containers.block import BlockBody
from lean_spec.subspecs.containers.block.types import AggregatedAttestations
from lean_spec.subspecs.containers.slot import Slot
from lean_spec.subspecs.containers.state import State, Validators
from lean_spec.subspecs.containers.state.types import (
HistoricalBlockHashes,
JustificationRoots,
JustificationValidators,
JustifiedSlots,
)
from lean_spec.subspecs.containers.validator import Validator
from lean_spec.subspecs.ssz.hash import hash_tree_root
from lean_spec.types import Bytes32, Bytes52, Uint64
from lean_spec.types import Bytes32, Uint64

pytestmark = pytest.mark.valid_until("Devnet")

Expand Down Expand Up @@ -151,109 +149,3 @@ def test_genesis_custom_validator_set(
justifications_validators=JustificationValidators(data=[]),
),
)


def test_genesis_block_hash_comparison() -> None:
"""Test that genesis block hashes are deterministic and differ with different inputs."""
# Create first genesis state with 3 validators
# Fill pubkeys with different values (1, 2, 3)
pubkeys1 = [Bytes52(bytes([i + 1] * 52)) for i in range(3)]
validators1 = Validators(
data=[Validator(pubkey=pubkey, index=Uint64(i)) for i, pubkey in enumerate(pubkeys1)]
)

genesis_state1 = State.generate_genesis(
genesis_time=Uint64(1000),
validators=validators1,
)

# Generate genesis block from first state
genesis_block1 = Block(
slot=Slot(0),
proposer_index=Uint64(0),
parent_root=Bytes32.zero(),
state_root=hash_tree_root(genesis_state1),
body=BlockBody(attestations=AggregatedAttestations(data=[])),
)

# Compute hash of first genesis block
genesis_block_hash1 = hash_tree_root(genesis_block1)

# Create a second genesis state with same config but regenerated (should produce same hash)
genesis_state1_copy = State.generate_genesis(
genesis_time=Uint64(1000),
validators=validators1,
)

genesis_block1_copy = Block(
slot=Slot(0),
proposer_index=Uint64(0),
parent_root=Bytes32.zero(),
state_root=hash_tree_root(genesis_state1_copy),
body=BlockBody(attestations=AggregatedAttestations(data=[])),
)

genesis_block_hash1_copy = hash_tree_root(genesis_block1_copy)

# Same genesis spec should produce same hash
assert genesis_block_hash1 == genesis_block_hash1_copy

# Create second genesis state with different validators
# Fill pubkeys with different values (10, 11, 12)
pubkeys2 = [Bytes52(bytes([i + 10] * 52)) for i in range(3)]
validators2 = Validators(
data=[Validator(pubkey=pubkey, index=Uint64(i)) for i, pubkey in enumerate(pubkeys2)]
)

genesis_state2 = State.generate_genesis(
genesis_time=Uint64(1000), # Same genesis_time but different validators
validators=validators2,
)

genesis_block2 = Block(
slot=Slot(0),
proposer_index=Uint64(0),
parent_root=Bytes32.zero(),
state_root=hash_tree_root(genesis_state2),
body=BlockBody(attestations=AggregatedAttestations(data=[])),
)

genesis_block_hash2 = hash_tree_root(genesis_block2)

# Different validators should produce different genesis block hash
assert genesis_block_hash1 != genesis_block_hash2

# Create third genesis state with same validators but different genesis_time
# Same as pubkeys1
pubkeys3 = [Bytes52(bytes([i + 1] * 52)) for i in range(3)]
validators3 = Validators(
data=[Validator(pubkey=pubkey, index=Uint64(i)) for i, pubkey in enumerate(pubkeys3)]
)

genesis_state3 = State.generate_genesis(
genesis_time=Uint64(2000), # Different genesis_time but same validators
validators=validators3,
)

genesis_block3 = Block(
slot=Slot(0),
proposer_index=Uint64(0),
parent_root=Bytes32.zero(),
state_root=hash_tree_root(genesis_state3),
body=BlockBody(attestations=AggregatedAttestations(data=[])),
)

genesis_block_hash3 = hash_tree_root(genesis_block3)

# Different genesis_time should produce different genesis block hash
assert genesis_block_hash1 != genesis_block_hash3

# Compare genesis block hashes with expected hex values
hash1_hex = f"0x{genesis_block_hash1.hex()}"
assert hash1_hex == "0xcc03f11dd80dd79a4add86265fad0a141d0a553812d43b8f2c03aa43e4b002e3"

hash2_hex = f"0x{genesis_block_hash2.hex()}"
assert hash2_hex == "0x6bd5347aa1397c63ed8558079fdd3042112a5f4258066e3a659a659ff75ba14f"

hash3_hex = f"0x{genesis_block_hash3.hex()}"
assert hash3_hex == "0xce48a709189aa2b23b6858800996176dc13eb49c0c95d717c39e60042de1ac91"
115 changes: 115 additions & 0 deletions tests/lean_spec/subspecs/genesis/test_state.py
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@@ -0,0 +1,115 @@
"""Unit tests for genesis state generation."""

from lean_spec.subspecs.containers.block import Block, BlockBody
from lean_spec.subspecs.containers.block.types import AggregatedAttestations
from lean_spec.subspecs.containers.slot import Slot
from lean_spec.subspecs.containers.state import State, Validators
from lean_spec.subspecs.containers.validator import Validator
from lean_spec.subspecs.ssz.hash import hash_tree_root
from lean_spec.types import Bytes32, Bytes52, Uint64


def test_genesis_block_hash_comparison() -> None:
"""Test that genesis block hashes are deterministic and differ with different inputs."""
# Create first genesis state with 3 validators
# Fill pubkeys with different values (1, 2, 3)
pubkeys1 = [Bytes52(bytes([i + 1] * 52)) for i in range(3)]
validators1 = Validators(
data=[Validator(pubkey=pubkey, index=Uint64(i)) for i, pubkey in enumerate(pubkeys1)]
)

genesis_state1 = State.generate_genesis(
genesis_time=Uint64(1000),
validators=validators1,
)

# Generate genesis block from first state
genesis_block1 = Block(
slot=Slot(0),
proposer_index=Uint64(0),
parent_root=Bytes32.zero(),
state_root=hash_tree_root(genesis_state1),
body=BlockBody(attestations=AggregatedAttestations(data=[])),
)

# Compute hash of first genesis block
genesis_block_hash1 = hash_tree_root(genesis_block1)

# Create a second genesis state with same config but regenerated (should produce same hash)
genesis_state1_copy = State.generate_genesis(
genesis_time=Uint64(1000),
validators=validators1,
)

genesis_block1_copy = Block(
slot=Slot(0),
proposer_index=Uint64(0),
parent_root=Bytes32.zero(),
state_root=hash_tree_root(genesis_state1_copy),
body=BlockBody(attestations=AggregatedAttestations(data=[])),
)

genesis_block_hash1_copy = hash_tree_root(genesis_block1_copy)

# Same genesis spec should produce same hash
assert genesis_block_hash1 == genesis_block_hash1_copy

# Create second genesis state with different validators
# Fill pubkeys with different values (10, 11, 12)
pubkeys2 = [Bytes52(bytes([i + 10] * 52)) for i in range(3)]
validators2 = Validators(
data=[Validator(pubkey=pubkey, index=Uint64(i)) for i, pubkey in enumerate(pubkeys2)]
)

genesis_state2 = State.generate_genesis(
genesis_time=Uint64(1000), # Same genesis_time but different validators
validators=validators2,
)

genesis_block2 = Block(
slot=Slot(0),
proposer_index=Uint64(0),
parent_root=Bytes32.zero(),
state_root=hash_tree_root(genesis_state2),
body=BlockBody(attestations=AggregatedAttestations(data=[])),
)

genesis_block_hash2 = hash_tree_root(genesis_block2)

# Different validators should produce different genesis block hash
assert genesis_block_hash1 != genesis_block_hash2

# Create third genesis state with same validators but different genesis_time
# Same as pubkeys1
pubkeys3 = [Bytes52(bytes([i + 1] * 52)) for i in range(3)]
validators3 = Validators(
data=[Validator(pubkey=pubkey, index=Uint64(i)) for i, pubkey in enumerate(pubkeys3)]
)

genesis_state3 = State.generate_genesis(
genesis_time=Uint64(2000), # Different genesis_time but same validators
validators=validators3,
)

genesis_block3 = Block(
slot=Slot(0),
proposer_index=Uint64(0),
parent_root=Bytes32.zero(),
state_root=hash_tree_root(genesis_state3),
body=BlockBody(attestations=AggregatedAttestations(data=[])),
)

genesis_block_hash3 = hash_tree_root(genesis_block3)

# Different genesis_time should produce different genesis block hash
assert genesis_block_hash1 != genesis_block_hash3

# Compare genesis block hashes with expected hex values
hash1_hex = f"0x{genesis_block_hash1.hex()}"
assert hash1_hex == "0xcc03f11dd80dd79a4add86265fad0a141d0a553812d43b8f2c03aa43e4b002e3"

hash2_hex = f"0x{genesis_block_hash2.hex()}"
assert hash2_hex == "0x6bd5347aa1397c63ed8558079fdd3042112a5f4258066e3a659a659ff75ba14f"

hash3_hex = f"0x{genesis_block_hash3.hex()}"
assert hash3_hex == "0xce48a709189aa2b23b6858800996176dc13eb49c0c95d717c39e60042de1ac91"
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