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Added eip 96 test script

This commit is contained in:
vub 2017-04-26 03:15:07 -04:00
parent 8620eb406d
commit f078d5b6a6
2 changed files with 42 additions and 6 deletions
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14
eip_96_blockhash_getter.se.py → eip96/eip_96_blockhash_getter.se.py
View File

@ -5,19 +5,21 @@ if msg.sender == 2**160 - 2:
~sstore(prev_block_number % 256, ~calldataload(0)) ~sstore(prev_block_number % 256, ~calldataload(0))
# Use storage fields 256..511 to store the hashes of the last 256 # Use storage fields 256..511 to store the hashes of the last 256
# blocks with block.number % 256 == 0 # blocks with block.number % 256 == 0
if not prev_block_number % 256: if not (prev_block_number % 256):
~sstore(256 + (prev_block_number / 256) % 256, ~calldataload(0)) ~sstore(256 + (prev_block_number / 256) % 256, ~calldataload(0))
# Use storage fields 512..767 to store the hashes of the last 256 # Use storage fields 512..767 to store the hashes of the last 256
# blocks with block.number % 65536 == 0 # blocks with block.number % 65536 == 0
if not prev_block_number % 65536: if not (prev_block_number % 65536):
~sstore(512 + (prev_block_number / 65536) % 256, ~calldataload(0)) ~sstore(512 + (prev_block_number / 65536) % 256, ~calldataload(0))
# Getting the block hash # Getting the block hash
else: else:
if block.number - ~calldataload(0) <= 256: if ~calldataload(0) >= block.number:
return(0)
elif block.number - ~calldataload(0) <= 256:
return(~sload(~calldataload(0) % 256)) return(~sload(~calldataload(0) % 256))
elif not block.number % 256 and block.number - ~calldataload(0) <= 65536: elif (not (~calldataload(0) % 256) and block.number - ~calldataload(0) <= 65536):
return(~sload(256 + (~calldataload(0) / 256) % 256)) return(~sload(256 + (~calldataload(0) / 256) % 256))
elif not block.number % 65536 and block.number - ~calldataload(0) <= 16777216: elif (not (~calldataload(0) % 65536) and block.number - ~calldataload(0) <= 16777216):
return(~sload(512 + (~calldataload(0) / 65536) % 256)) return(~sload(512 + (~calldataload(0) / 65536) % 256))
else: else:
~invalid() return(~calldataload(0) % 256 == 0)

34
eip96/eip_96_test_script.py Normal file
View File

@ -0,0 +1,34 @@
from ethereum import tester, vm
from ethereum.utils import sha3, encode_int32, safe_ord, encode_hex
from ethereum.state_transition import apply_message
s = tester.state()
c = s.contract('eip_96_blockhash_getter.se.py')
blockhash_addr = b'\x00' * 19 + b'\x10'
system_addr = b'\xff' * 19 + b'\xfe'
s.state.set_code(blockhash_addr, s.state.get_code(c))
def mk_hash_setting_message(data):
return vm.Message(sender=system_addr, to=blockhash_addr, value=0, gas=1000000, data=data)
print("Setting block hashes")
for i in range(1, 1000):
s.state.block_number = i + 1
o = apply_message(s.state, mk_hash_setting_message(sha3(str(i))))
if i % 100 == 0:
print("Set %d" % i)
print("Testing reads")
s.state.block_number = 1000
assert s.send(tester.k0, blockhash_addr, 0, encode_int32(999)) == sha3(str(999))
assert s.send(tester.k0, blockhash_addr, 0, encode_int32(998)) == sha3(str(998))
assert s.send(tester.k0, blockhash_addr, 0, encode_int32(744)) == sha3(str(744))
assert s.send(tester.k0, blockhash_addr, 0, encode_int32(743)) == b'\x00' * 32
assert s.send(tester.k0, blockhash_addr, 0, encode_int32(1000)) == b'\x00' * 32
assert s.send(tester.k0, blockhash_addr, 0, encode_int32(1001)) == b'\x00' * 32
assert s.send(tester.k0, blockhash_addr, 0, encode_int32(513)) == b'\x00' * 32
assert s.send(tester.k0, blockhash_addr, 0, encode_int32(512)) == sha3(str(512))
assert s.send(tester.k0, blockhash_addr, 0, encode_int32(511)) == b'\x00' * 32
assert s.send(tester.k0, blockhash_addr, 0, encode_int32(256)) == sha3(str(256))
print("Tests passed!")
print("EVM code: 0x%s" % encode_hex(s.state.get_code(blockhash_addr)))