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

# Copyright 2015-2016 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/>.

"""Tests for qutebrowser.misc.crashdialog."""

import os
import pytest
from qutebrowser.misc import crashdialog


VALID_CRASH_TEXT = """
Fatal Python error: Segmentation fault
_
Current thread 0x00007f09b538d700 (most recent call first):
  File "", line 1 in testfunc
  File "filename", line 88 in func
"""

VALID_CRASH_TEXT_EMPTY = """
Fatal Python error: Aborted
_
Current thread 0x00007f09b538d700 (most recent call first):
  File "", line 1 in_
  File "filename", line 88 in func
"""

VALID_CRASH_TEXT_THREAD = """
Fatal Python error: Segmentation fault
_
Thread 0x00007fa135ac7700 (most recent call first):
  File "", line 1 in testfunc
"""

INVALID_CRASH_TEXT = """
Hello world!
"""


class TestParseFatalStacktrace:

    """Tests for parse_fatal_stacktrace."""

    def test_valid_text(self):
        """Test parse_fatal_stacktrace with a valid text."""
        text = VALID_CRASH_TEXT.strip().replace('_', ' ')
        typ, func = crashdialog.parse_fatal_stacktrace(text)
        assert (typ, func) == ("Segmentation fault", 'testfunc')

    def test_valid_text_thread(self):
        """Test parse_fatal_stacktrace with a valid text #2."""
        text = VALID_CRASH_TEXT_THREAD.strip().replace('_', ' ')
        typ, func = crashdialog.parse_fatal_stacktrace(text)
        assert (typ, func) == ("Segmentation fault", 'testfunc')

    def test_valid_text_empty(self):
        """Test parse_fatal_stacktrace with a valid text but empty function."""
        text = VALID_CRASH_TEXT_EMPTY.strip().replace('_', ' ')
        typ, func = crashdialog.parse_fatal_stacktrace(text)
        assert (typ, func) == ('Aborted', '')

    def test_invalid_text(self):
        """Test parse_fatal_stacktrace with an invalid text."""
        text = INVALID_CRASH_TEXT.strip().replace('_', ' ')
        typ, func = crashdialog.parse_fatal_stacktrace(text)
        assert (typ, func) == ('', '')


@pytest.mark.parametrize('env, expected', [
    ({'FOO': 'bar'}, ""),
    ({'FOO': 'bar', 'LC_ALL': 'baz'}, "LC_ALL = baz"),
    ({'LC_ALL': 'baz', 'PYTHONFOO': 'fish'}, "LC_ALL = baz\nPYTHONFOO = fish"),
    (
        {'DE': 'KDE', 'DESKTOP_SESSION': 'plasma'},
        "DE = KDE\nDESKTOP_SESSION = plasma"
    ),
    (
        {'QT5_IM_MODULE': 'fcitx', 'QT_IM_MODULE': 'fcitx'},
        "QT_IM_MODULE = fcitx"
    ),
    ({'LANGUAGE': 'foo', 'LANG': 'en_US.UTF-8'}, "LANG = en_US.UTF-8"),
], ids=repr)
def test_get_environment_vars(monkeypatch, env, expected):
    """Test for crashdialog._get_environment_vars."""
    for key in os.environ.copy():
        monkeypatch.delenv(key)
    for k, v in env.items():
        monkeypatch.setenv(k, v)
    assert crashdialog._get_environment_vars() == expected