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# test_backend_bluetooth -- Test nxt.backend.bluetooth module
# Copyright (C) 2021 Nicolas Schodet
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
from unittest.mock import Mock, call, patch
import pytest
import nxt.backend.bluetooth
@pytest.fixture
def msock():
sock = Mock(
spec_set=(
"connect",
"close",
"send",
"recv",
)
)
return sock
@pytest.fixture
def mbluetooth(msock):
class BluetoothError(Exception):
pass
bluetooth = Mock()
bluetooth.BluetoothSocket.return_value = msock
bluetooth.BluetoothError = BluetoothError
return bluetooth
@pytest.fixture
def mbluetooth_import(mbluetooth):
orig_import = __import__
def mocked_import(name, *args):
if name == "bluetooth":
return mbluetooth
return orig_import(name, *args)
with patch("builtins.__import__", new=mocked_import):
yield mocked_import
@pytest.fixture
def mbluetooth_import_error():
orig_import = __import__
def mocked_import(name, *args):
if name == "bluetooth":
raise ImportError("mocked")
return orig_import(name, *args)
with patch("builtins.__import__", new=mocked_import):
yield mocked_import
@pytest.fixture
def mbluetooth_import_not_supported():
orig_import = __import__
def mocked_import(name, *args):
if name == "bluetooth":
raise Exception("mocked")
return orig_import(name, *args)
with patch("builtins.__import__", new=mocked_import):
yield mocked_import
def test_bluetooth(mbluetooth, mbluetooth_import, msock):
# Instantiate backend.
backend = nxt.backend.bluetooth.get_backend()
# Find brick.
mbluetooth.discover_devices.return_value = [
"00:01:02:03:04:05",
]
bricks = list(backend.find(blah="blah"))
assert len(bricks) == 1
brick = bricks[0]
assert mbluetooth.BluetoothSocket.called
assert msock.connect.called
sock = brick._sock
# str.
assert str(sock) == "Bluetooth (00:01:02:03:04:05)"
# Send.
some_bytes = bytes.fromhex("01020304")
some_len = bytes.fromhex("0400")
some_bytes_with_len = some_len + some_bytes
sock.send(some_bytes)
assert msock.send.call_args == call(some_bytes_with_len)
# Recv.
msock.recv.side_effect = [some_len, some_bytes]
r = sock.recv()
assert r == some_bytes
assert msock.recv.called
# Close.
brick.close()
assert msock.close.called
# Duplicated close.
sock.close()
def test_bluetooth_by_name(mbluetooth, mbluetooth_import, msock):
# Instantiate backend.
backend = nxt.backend.bluetooth.get_backend()
# Find brick.
mbluetooth.discover_devices.return_value = [
("00:01:02:03:04:05", "NXT"),
("00:01:02:03:04:06", "NXT"),
("00:01:02:03:04:07", "NXT2"),
]
bricks = list(backend.find(name="NXT2", blah="blah"))
assert len(bricks) == 1
brick = bricks[0]
assert mbluetooth.BluetoothSocket.called
assert msock.connect.called
sock = brick._sock
# str.
assert str(sock) == "Bluetooth (00:01:02:03:04:07)"
# Close.
brick.close()
def test_bluetooth_by_host(mbluetooth, mbluetooth_import, msock):
# Instantiate backend.
backend = nxt.backend.bluetooth.get_backend()
# Find brick.
bricks = list(backend.find(host="00:01:02:03:04:05", blah="blah"))
assert len(bricks) == 1
brick = bricks[0]
assert not mbluetooth.discover_devices.called
assert mbluetooth.BluetoothSocket.called
assert msock.connect.called
sock = brick._sock
# str.
assert str(sock) == "Bluetooth (00:01:02:03:04:05)"
# Close.
brick.close()
def test_bluetooth_by_host_and_name(mbluetooth, mbluetooth_import, msock):
# Instantiate backend.
backend = nxt.backend.bluetooth.get_backend()
# Find brick.
bricks = list(backend.find(host="00:01:02:03:04:05", name="NXT"))
assert len(bricks) == 1
brick = bricks[0]
assert not mbluetooth.discover_devices.called
assert mbluetooth.BluetoothSocket.called
assert msock.connect.called
sock = brick._sock
# str.
assert str(sock) == "Bluetooth (00:01:02:03:04:05)"
# Close.
brick.close()
def test_bluetooth_not_present(mbluetooth_import_error):
assert nxt.backend.bluetooth.get_backend() is None
def test_bluetooth_not_supported(mbluetooth_import_not_supported):
assert nxt.backend.bluetooth.get_backend() is None
def test_bluetooth_cant_connect(mbluetooth, mbluetooth_import, msock):
backend = nxt.backend.bluetooth.get_backend()
mbluetooth.discover_devices.return_value = [
"00:01:02:03:04:05",
]
msock.connect.side_effect = [mbluetooth.BluetoothError]
bricks = list(backend.find(blah="blah"))
assert len(bricks) == 0
def test_bluetooth_cant_discover(mbluetooth, mbluetooth_import, msock):
backend = nxt.backend.bluetooth.get_backend()
mbluetooth.discover_devices.side_effect = [OSError]
bricks = list(backend.find(blah="blah"))
assert len(bricks) == 0
mbluetooth.discover_devices.side_effect = [mbluetooth.BluetoothError]
bricks = list(backend.find(blah="blah"))
assert len(bricks) == 0
@pytest.mark.nxt("bluetooth")
def test_bluetooth_real():
# Instantiate backend.
backend = nxt.backend.bluetooth.get_backend()
# Find brick.
bricks = list(backend.find())
assert len(bricks) > 0, "no NXT found"
brick = bricks[0]
sock = brick._sock
# str.
assert str(sock).startswith("Bluetooth (")
# Send.
sock.send(bytes.fromhex("019b"))
# Recv.
r = sock.recv()
assert r.startswith(bytes.fromhex("029b00"))
# Close.
brick.close()
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