94 lines
3.2 KiB
Python
94 lines
3.2 KiB
Python
# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
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# Copyright 2018 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
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#
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# This file is part of qutebrowser.
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#
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# qutebrowser is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# qutebrowser is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with qutebrowser. If not, see <http://www.gnu.org/licenses/>.
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"""Tests for qutebrowser.components.misccommands."""
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import signal
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import contextlib
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import time
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import pytest
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from qutebrowser.api import cmdutils
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from qutebrowser.utils import utils
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from qutebrowser.components import misccommands
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@contextlib.contextmanager
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def _trapped_segv(handler):
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"""Temporarily install given signal handler for SIGSEGV."""
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old_handler = signal.signal(signal.SIGSEGV, handler)
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yield
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signal.signal(signal.SIGSEGV, old_handler)
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def test_debug_crash_exception():
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"""Verify that debug_crash crashes as intended."""
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with pytest.raises(Exception, match="Forced crash"):
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misccommands.debug_crash(typ='exception')
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@pytest.mark.skipif(utils.is_windows,
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reason="current CPython/win can't recover from SIGSEGV")
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def test_debug_crash_segfault():
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"""Verify that debug_crash crashes as intended."""
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caught = False
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def _handler(num, frame):
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"""Temporary handler for segfault."""
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nonlocal caught
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caught = num == signal.SIGSEGV
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with _trapped_segv(_handler):
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# since we handle the segfault, execution will continue and run into
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# the "Segfault failed (wat.)" Exception
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with pytest.raises(Exception, match="Segfault failed"):
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misccommands.debug_crash(typ='segfault')
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time.sleep(0.001)
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assert caught
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def test_debug_trace(mocker):
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"""Check if hunter.trace is properly called."""
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# but only if hunter is available
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pytest.importorskip('hunter')
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hunter_mock = mocker.patch.object(misccommands, 'hunter')
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misccommands.debug_trace(1)
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hunter_mock.trace.assert_called_with(1)
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def test_debug_trace_exception(mocker):
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"""Check that exceptions thrown by hunter.trace are handled."""
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def _mock_exception():
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"""Side effect for testing debug_trace's reraise."""
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raise Exception('message')
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hunter_mock = mocker.patch.object(misccommands, 'hunter')
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hunter_mock.trace.side_effect = _mock_exception
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with pytest.raises(cmdutils.CommandError, match='Exception: message'):
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misccommands.debug_trace()
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def test_debug_trace_no_hunter(monkeypatch):
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"""Test that an error is shown if debug_trace is called without hunter."""
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monkeypatch.setattr(misccommands, 'hunter', None)
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with pytest.raises(cmdutils.CommandError, match="You need to install "
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"'hunter' to use this command!"):
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misccommands.debug_trace()
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