from application_client.handshake_command_sender import HandshakeCommandSender
from application_client.handshake_response_unpacker import unpack_get_app_name_response


def test_app_name(backend):
    """The wallet's preflight compares this to the exact string "Handshake",
    so it is part of the wire contract, not a cosmetic label."""
    client = HandshakeCommandSender(backend)
    rapdu = client.get_app_name()
    assert unpack_get_app_name_response(rapdu.data) == "Handshake"