# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:

# Copyright 2015 Florian Bruhin (The Compiler) <mail@qutebrowser.org>:
#
# This file is part of qutebrowser.
#
# qutebrowser 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.
#
# qutebrowser 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.
#
# You should have received a copy of the GNU General Public License
# along with qutebrowser.  If not, see <http://www.gnu.org/licenses/>.

"""Tests for mode parsers."""

from PyQt5.QtCore import Qt

from unittest import mock
import pytest

from qutebrowser.keyinput import modeparsers
from qutebrowser.utils import objreg


CONFIG = {'input': {'partial-timeout': 100}}


BINDINGS = {'normal': {'a': 'a', 'ba': 'ba'}}


fake_keyconfig = mock.Mock(spec=['get_bindings_for'])
fake_keyconfig.get_bindings_for.side_effect = lambda s: BINDINGS[s]


class TestsNormalKeyParser:

    """Tests for NormalKeyParser.

    Attributes:
        kp: The NormalKeyParser to be tested.
    """

    # pylint: disable=protected-access

    @pytest.yield_fixture(autouse=True)
    def setup(self, mocker, stubs):
        """Set up mocks and read the test config."""
        mocker.patch('qutebrowser.keyinput.basekeyparser.usertypes.Timer',
                     new=stubs.FakeTimer)
        mocker.patch('qutebrowser.keyinput.modeparsers.config',
                     new=stubs.ConfigStub(CONFIG))

        objreg.register('key-config', fake_keyconfig)
        self.kp = modeparsers.NormalKeyParser(0)
        self.kp.execute = mock.Mock()
        yield
        objreg.delete('key-config')

    def test_keychain(self, fake_keyevent_factory):
        """Test valid keychain."""
        # Press 'x' which is ignored because of no match
        self.kp.handle(fake_keyevent_factory(Qt.Key_X, text='x'))
        # Then start the real chain
        self.kp.handle(fake_keyevent_factory(Qt.Key_B, text='b'))
        self.kp.handle(fake_keyevent_factory(Qt.Key_A, text='a'))
        self.kp.execute.assert_called_once_with('ba', self.kp.Type.chain, None)
        assert self.kp._keystring == ''

    def test_partial_keychain_timeout(self, fake_keyevent_factory):
        """Test partial keychain timeout."""
        timer = self.kp._partial_timer
        assert not timer.isActive()
        # Press 'b' for a partial match.
        # Then we check if the timer has been set up correctly
        self.kp.handle(fake_keyevent_factory(Qt.Key_B, text='b'))
        assert timer.isSingleShot()
        assert timer.interval() == 100
        assert timer.isActive()

        assert not self.kp.execute.called
        assert self.kp._keystring == 'b'
        # Now simulate a timeout and check the keystring has been cleared.
        keystring_updated_mock = mock.Mock()
        self.kp.keystring_updated.connect(keystring_updated_mock)
        timer.timeout.emit()
        assert not self.kp.execute.called
        assert self.kp._keystring == ''
        keystring_updated_mock.assert_called_once_with('')