def test_evaluate_script(self):
execution = ScriptExecution()
final_state = execution.evaluate(self.script_simple_addition)[-1]
self.assertEqual(['\x05'], final_state.stack)
final_state = execution.evaluate(self.script_push_dup)[-1]
self.assertEqual(['\x80', '\x80'], final_state.stack)
self.assertFalse(execution.script_verified)
def test_evaluate_script(self):
execution = ScriptExecution()
final_state = execution.evaluate(self.script_simple_addition)[-1]
self.assertEqual(['\x05'], final_state.stack)
final_state = execution.evaluate(self.script_push_dup)[-1]
self.assertEqual(['\x80', '\x80'], final_state.stack)
self.assertFalse(execution.script_verified)
def test_p2sh_script_verification(self):
# P2SH tx from Bitcoin Core tests.
rawtx = '01000000010001000000000000000000000000000000000000000000000000000000000000000000006e493046022100c66c9cdf4c43609586d15424c54707156e316d88b0a1534c9e6b0d4f311406310221009c0fe51dbc9c4ab7cc25d3fdbeccf6679fe6827f08edf2b4a9f16ee3eb0e438a0123210338e8034509af564c62644c07691942e0c056752008a173c89f60ab2a88ac2ebfacffffffff010000000000000000015100000000'
tx = Transaction.deserialize(rawtx.decode('hex'))
tx_script = Script.from_human('OP_HASH160 0x8febbed40483661de6958d957412f82deed8e2f7 OP_EQUAL')
execution = ScriptExecution()
_ = execution.evaluate(tx_script, txTo=tx, inIdx=0)
self.assertTrue(execution.script_passed)
self.assertTrue(execution.script_verified)
invalid_tx_script = Script.from_human('OP_HASH160 0x0febbed40483661de6958d957412f82deed8e2f7 OP_EQUAL')
_ = execution.evaluate(invalid_tx_script, txTo=tx, inIdx=0)
self.assertFalse(execution.script_passed)
self.assertTrue(execution.script_verified)
def test_valid_flow_control(self):
valid_tests = (
('1 1', 'IF IF 1 ELSE 0 ENDIF ENDIF'),
('1 0', 'IF IF 1 ELSE 0 ENDIF ENDIF'),
('1 1', 'IF IF 1 ELSE 0 ENDIF ELSE IF 0 ELSE 1 ENDIF ENDIF'),
('0 0', 'IF IF 1 ELSE 0 ENDIF ELSE IF 0 ELSE 1 ENDIF ENDIF'),
('1 0', 'NOTIF IF 1 ELSE 0 ENDIF ENDIF'),
('1 1', 'NOTIF IF 1 ELSE 0 ENDIF ENDIF'),
('1 0', 'NOTIF IF 1 ELSE 0 ENDIF ELSE IF 0 ELSE 1 ENDIF ENDIF'),
('0 1', 'NOTIF IF 1 ELSE 0 ENDIF ELSE IF 0 ELSE 1 ENDIF ENDIF'),
)
valid_scripts = []
for script_sig, script_pubkey in valid_tests:
script_sig, _ = transform_human(script_sig)
script_pubkey, _ = transform_human(script_pubkey)
script_sig = Script.from_human(script_sig)
script_pubkey = Script.from_human(script_pubkey)
valid_scripts.append((script_sig, script_pubkey))
execution = ScriptExecution()
for script_sig, script_pubkey in valid_scripts:
tx = build_spending_tx(script_sig, build_crediting_tx(script_pubkey))
_ = execution.evaluate(script_pubkey, txTo=tx, inIdx=0)
self.assertTrue(execution.script_passed)
self.assertTrue(execution.script_verified)
def test_invalid_flow_control(self):
invalid_tests = (
('0 1', 'IF IF 1 ELSE 0 ENDIF ENDIF'),
('0 0', 'IF IF 1 ELSE 0 ENDIF ENDIF'),
('1 0', 'IF IF 1 ELSE 0 ENDIF ELSE IF 0 ELSE 1 ENDIF ENDIF'),
('0 1', 'IF IF 1 ELSE 0 ENDIF ELSE IF 0 ELSE 1 ENDIF ENDIF'),
('0 0', 'NOTIF IF 1 ELSE 0 ENDIF ENDIF'),
('0 1', 'NOTIF IF 1 ELSE 0 ENDIF ENDIF'),
('1 1', 'NOTIF IF 1 ELSE 0 ENDIF ELSE IF 0 ELSE 1 ENDIF ENDIF'),
('0 0', 'NOTIF IF 1 ELSE 0 ENDIF ELSE IF 0 ELSE 1 ENDIF ENDIF'),
)
invalid_scripts = []
for script_sig, script_pubkey in invalid_tests:
script_sig, _ = transform_human(script_sig)
script_pubkey, _ = transform_human(script_pubkey)
script_sig = Script.from_human(script_sig)
script_pubkey = Script.from_human(script_pubkey)
invalid_scripts.append((script_sig, script_pubkey))
execution = ScriptExecution()
for script_sig, script_pubkey in invalid_scripts:
tx = build_spending_tx(script_sig,
build_crediting_tx(script_pubkey))
_ = execution.evaluate(script_pubkey, txTo=tx, inIdx=0)
self.assertFalse(execution.script_passed)
self.assertFalse(execution.script_verified)
def test_p2sh_script_verification(self):
# P2SH tx from Bitcoin Core tests.
rawtx = '01000000010001000000000000000000000000000000000000000000000000000000000000000000006e493046022100c66c9cdf4c43609586d15424c54707156e316d88b0a1534c9e6b0d4f311406310221009c0fe51dbc9c4ab7cc25d3fdbeccf6679fe6827f08edf2b4a9f16ee3eb0e438a0123210338e8034509af564c62644c07691942e0c056752008a173c89f60ab2a88ac2ebfacffffffff010000000000000000015100000000'
tx = Transaction.deserialize(rawtx.decode('hex'))
tx_script = Script.from_human(
'OP_HASH160 0x8febbed40483661de6958d957412f82deed8e2f7 OP_EQUAL')
execution = ScriptExecution()
_ = execution.evaluate(tx_script, txTo=tx, inIdx=0)
self.assertTrue(execution.script_passed)
self.assertTrue(execution.script_verified)
invalid_tx_script = Script.from_human(
'OP_HASH160 0x0febbed40483661de6958d957412f82deed8e2f7 OP_EQUAL')
_ = execution.evaluate(invalid_tx_script, txTo=tx, inIdx=0)
self.assertFalse(execution.script_passed)
self.assertFalse(execution.script_verified)
def test_step_script(self):
# dict of {script: [stackAtStep0, stackAtStep1, ...], ...}
step_tests = {
self.script_simple_addition: [['\x02'], ['\x02', '\x03'],
['\x05']],
self.script_push_dup: [['\x80'], ['\x80', '\x80']]
}
execution = ScriptExecution()
for my_script, expected_states in step_tests.items():
steps = execution.evaluate(my_script)
for i, L in enumerate(expected_states):
self.assertEqual(L, steps[i].stack)
def test_step_script(self):
# dict of {script: [stackAtStep0, stackAtStep1, ...], ...}
step_tests = {
self.script_simple_addition: [
['\x02'],
['\x02', '\x03'],
['\x05']
],
self.script_push_dup: [
['\x80'],
['\x80', '\x80']
]
}
execution = ScriptExecution()
for my_script, expected_states in step_tests.items():
steps = execution.evaluate(my_script)
for i, L in enumerate(expected_states):
self.assertEqual(L, steps[i].stack)