test_clz_push_operation_same_value()

Documentation for tests/osaka/eip7939_count_leading_zeros/test_count_leading_zeros.py::test_clz_push_operation_same_value@2867859a.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/osaka/eip7939_count_leading_zeros/test_count_leading_zeros.py::test_clz_push_operation_same_value --fork Amsterdam

Test CLZ opcode returns the same value via different push operations.

Source code in tests/osaka/eip7939_count_leading_zeros/test_count_leading_zeros.py

@pytest.mark.valid_from("Osaka")
def test_clz_push_operation_same_value(
    state_test: StateTestFiller, pre: Alloc
) -> None:
    """Test CLZ opcode returns the same value via different push operations."""
    storage = {}

    code = Op.SSTORE(0, Op.CLZ(Op.PUSH0))
    storage[0x00] = 256

    for bit in range(1, 33):  # PUSH value
        for push_n in range(bit, 33):  # PUSHn opcode
            op = getattr(Op, f"PUSH{push_n}")
            key = 100 * bit + push_n
            code += Op.SSTORE(key, Op.CLZ(op[1 << bit]))
            storage[key] = 255 - bit

    code_address = pre.deploy_contract(code=code)

    tx = Transaction(to=code_address, sender=pre.fund_eoa())

    post = {
        code_address: Account(
            storage=storage,
        )
    }

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

Parametrized Test Cases

This test generates 1 parametrized test case across 2 forks.