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

# Copyright 2014-2016 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/>.

"""Test widgets in miscwidgets module."""

from unittest import mock
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QApplication
import pytest

from qutebrowser.misc.miscwidgets import CommandLineEdit


class TestCommandLineEdit:

    """Tests for CommandLineEdit widget."""

    @pytest.yield_fixture
    def cmd_edit(self, qtbot):
        """Fixture to initialize a CommandLineEdit."""
        cmd_edit = CommandLineEdit(None)
        cmd_edit.set_prompt(':')
        qtbot.add_widget(cmd_edit)
        assert cmd_edit.text() == ''
        yield cmd_edit

    @pytest.fixture
    def mock_clipboard(self, mocker):
        """Fixture to mock QApplication.clipboard.

        Return:
            The mocked QClipboard object.
        """
        mocker.patch.object(QApplication, 'clipboard')
        clipboard = mock.MagicMock()
        clipboard.supportsSelection.return_value = True
        QApplication.clipboard.return_value = clipboard
        return clipboard

    def test_position(self, qtbot, cmd_edit):
        """Test cursor position based on the prompt."""
        qtbot.keyClicks(cmd_edit, ':hello')
        assert cmd_edit.text() == ':hello'
        assert cmd_edit.cursorPosition() == len(':hello')

        cmd_edit.home(mark=True)
        assert cmd_edit.cursorPosition() == len(':hello')
        qtbot.keyClick(cmd_edit, Qt.Key_Delete)
        assert cmd_edit.text() == ':'
        qtbot.keyClick(cmd_edit, Qt.Key_Backspace)
        assert cmd_edit.text() == ':'

        qtbot.keyClicks(cmd_edit, 'hey again')
        assert cmd_edit.text() == ':hey again'

    def test_invalid_prompt(self, qtbot, cmd_edit):
        """Test preventing of an invalid prompt being entered."""
        qtbot.keyClicks(cmd_edit, '$hello')
        assert cmd_edit.text() == ''