trezor-firmware/tests/device_tests/test_cancel.py

# This file is part of the Trezor project.
#
# Copyright (C) 2012-2019 SatoshiLabs and contributors
#
# This library is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3
# as published by the Free Software Foundation.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the License along with this library.
# If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.

import pytest

import trezorlib.messages as m
from trezorlib.debuglink import TrezorClientDebugLink as Client
from trezorlib.exceptions import Cancelled

from ..common import TEST_ADDRESS_N


@pytest.mark.parametrize(
    "message",
    [
        m.Ping(message="hello", button_protection=True),
        m.GetAddress(
            address_n=TEST_ADDRESS_N,
            coin_name="Testnet",
            script_type=m.InputScriptType.SPENDADDRESS,
            show_display=True,
        ),
    ],
)
def test_cancel_message_via_cancel(client: Client, message):
    def input_flow():
        yield
        client.cancel()

    with client, pytest.raises(Cancelled):
        client.set_expected_responses([m.ButtonRequest(), m.Failure()])
        client.set_input_flow(input_flow)
        client.call(message)


@pytest.mark.parametrize(
    "message",
    [
        m.Ping(message="hello", button_protection=True),
        m.GetAddress(
            address_n=TEST_ADDRESS_N,
            coin_name="Testnet",
            script_type=m.InputScriptType.SPENDADDRESS,
            show_display=True,
        ),
    ],
)
def test_cancel_message_via_initialize(client: Client, message):
    resp = client.call_raw(message)
    assert isinstance(resp, m.ButtonRequest)

    client._raw_write(m.ButtonAck())
    client._raw_write(m.Initialize())

    resp = client._raw_read()

    assert isinstance(resp, m.Features)


@pytest.mark.skip_t1
def test_cancel_on_paginated(client: Client):
    """Check that device is responsive on paginated screen. See #1708."""
    # In #1708, the device would ignore USB (or UDP) events while waiting for the user
    # to page through the screen. This means that this testcase, instead of failing,
    # would get stuck waiting for the _raw_read result.
    # I'm not spending the effort to modify the testcase to cause a _failure_ if that
    # happens again. Just be advised that this should not get stuck.
    message = m.SignMessage(
        message=b"hello" * 64,
        address_n=TEST_ADDRESS_N,
        coin_name="Testnet",
    )
    resp = client.call_raw(message)
    assert isinstance(resp, m.ButtonRequest)
    client._raw_write(m.ButtonAck())
    client.debug.press_yes()

    resp = client._raw_read()
    assert isinstance(resp, m.ButtonRequest)
    assert resp.pages is not None
    client._raw_write(m.ButtonAck())

    client._raw_write(m.Cancel())
    resp = client._raw_read()
    assert isinstance(resp, m.Failure)
    assert resp.code == m.FailureType.ActionCancelled