Fix headless tests on Wayland. #19083
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anntzer
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Dec 9, 2020
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Since matplotlib#17396, backends now check for Wayland settings as part of headless detection. However, the headless tests do not override those settings. When running on Wayland, they thus think the display exists when they are not supposed to.
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timhoffm
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Dec 11, 2020
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PR Summary
Since #17396, backends now check for Wayland settings as part of headless detection. However, the headless tests do not override those settings. When running on Wayland, they thus think the display exists when they are not supposed to.
PR Checklist
pytestpasses).flake8on changed files to check).flake8-docstringsand runflake8 --docstring-convention=all).doc/users/next_whats_new/(follow instructions in README.rst there).doc/api/next_api_changes/(follow instructions in README.rst there).