Skip to content

test_all_opcodes()

Documentation for tests/frontier/opcodes/test_all_opcodes.py::test_all_opcodes@b47f0253.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/frontier/opcodes/test_all_opcodes.py::test_all_opcodes --fork Amsterdam

Test each possible opcode on the fork with a single contract that calls each opcode in succession. Check that each subcall passes if the opcode is supported and fails otherwise.

Source code in tests/frontier/opcodes/test_all_opcodes.py 
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
@pytest.mark.ported_from(
    [
        "https://github.com/ethereum/tests/blob/v13.3/src/GeneralStateTestsFiller/stBadOpcode/badOpcodesFiller.json",
        "https://github.com/ethereum/tests/blob/v13.3/src/GeneralStateTestsFiller/stBugs/evmBytecodeFiller.json",
    ],
    pr=["https://github.com/ethereum/execution-spec-tests/pull/748"],
)
@pytest.mark.valid_from("Frontier")
@pytest.mark.eels_base_coverage
def test_all_opcodes(
    state_test: StateTestFiller, pre: Alloc, fork: Fork
) -> None:
    """
    Test each possible opcode on the fork with a single contract that calls
    each opcode in succession. Check that each subcall passes if the opcode is
    supported and fails otherwise.
    """
    code_worked = 1000

    code_contract: Dict[Opcode, Address] = {}
    valid_opcodes = set(fork.valid_opcodes())
    all_opcodes = set(Opcode(i) for i in range(0xFF + 1))
    for opcode in sorted(valid_opcodes | all_opcodes):
        test_opcode: Opcode | Bytecode = opcode
        if opcode.has_data_portion():
            if opcode in [Op.SWAPN, Op.DUPN]:
                test_opcode = opcode[17]
            elif opcode == Op.EXCHANGE:
                test_opcode = opcode[1, 2]
            else:
                test_opcode = opcode[0]
        code_contract[opcode] = pre.deploy_contract(
            balance=10,
            code=prepare_stack(opcode) + test_opcode + prepare_suffix(opcode),
            storage={},
        )

    # EVM code to make the call and store the result
    contract_address = pre.deploy_contract(
        code=sum(
            Op.SSTORE(
                Op.PUSH1(opcode.int()),
                # Limit gas to limit the gas consumed by the exceptional aborts
                # in each subcall that uses an undefined opcode.
                Op.CALL(35_000, opcode_address, 0, 0, 0, 0, 0),
            )
            for opcode, opcode_address in code_contract.items()
        )
        + Op.SSTORE(code_worked, 1)
        + Op.STOP,
    )

    post = {
        contract_address: Account(
            storage={
                **{
                    opcode.int(): 1 if opcode != Op.REVERT else 0
                    for opcode in fork.valid_opcodes()
                },
                code_worked: 1,
            }
        ),
    }

    tx = Transaction(
        sender=pre.fund_eoa(),
        gas_limit=9_000_000,
        to=contract_address,
        protected=fork.supports_protected_txs(),
    )

    state_test(pre=pre, post=post, tx=tx)

Parametrized Test Cases

This test generates 1 parametrized test case across 14 forks.