python - 运行时错误 : could not open display

Question

我有一个包含

的单元测试

import gtk

其中包含用于测试信号处理程序和 GUI 类的单元测试。当我从 shell 运行 py.test 时效果很好，因为我连接了 X11 显示器。但是，当我尝试运行 tox 时，我得到:

______________________ ERROR collecting tests/test_gui.py ______________________
tests/test_gui.py:17: in <module>
    from rprs_bootstrap.gui import GUI
src/gui.py:12: in <module>
    import gtk.glade
.tox/py27/lib/python2.7/site-packages/gtk-2.0/gtk/__init__.py:64: in <module>
    _init()
.tox/py27/lib/python2.7/site-packages/gtk-2.0/gtk/__init__.py:52: in _init
    _gtk.init_check()
E   RuntimeError: could not open display
!!!!!!!!!!!!!!!!!!!! Interrupted: stopping after 1 failures !!!!!!!!!!!!!!!!!!!!
=========================== 1 error in 0.34 seconds ============================
make: *** [tox] Error 2

我可以开始 Xvfb tox.ini 中的服务器，但这似乎不够优雅。 有什么建议吗？

Answer 1

使用pytest-xvfb

哪个

[...] runs your testsuite with Xvfb to avoid popping up windows during GUI tests or allow them to run on systems without a display (like a CI).

安装:

pip install pytest-xvfb