trezor-firmware/core/tests/common.py

import sys

sys.path.append("../src")

from ubinascii import hexlify, unhexlify  # noqa: F401

import unittest  # noqa: F401
from typing import Any, Awaitable

from trezor import utils  # noqa: F401
from apps.common.paths import HARDENED

def H_(x: int) -> int:
    """
    Shortcut function that "hardens" a number in a BIP44 path.
    """
    return x | HARDENED


def UH_(x: int) -> int:
    """
    Shortcut function that "un-hardens" a number in a BIP44 path.
    """
    return x & ~(HARDENED)


def await_result(task: Awaitable) -> Any:
    value = None
    while True:
        try:
            result = task.send(value)
        except StopIteration as e:
            return e.value

        if result:
            value = await_result(result)
        else:
            value = None