How can run rendering tests in gitlab cicd?

Question

I am trying to run some tests using pytest in Gitlab CI/CD. Some of those tests include rendering using the Pyglet module.

I get an error:

pyglet.window.NoSuchConfigException: No standard config is available.

I have tried both headless=True and False. Then I found xvfb so I tried to run the test by making a virtual screen:

  before_script:
    - apt-get install -y xorg-dev libglu1-mesa libgl1-mesa-dev xvfb libxinerama1 libxcursor1
    - export DISPLAY=:0
  script:
    - conda run -n myenv-3.10-cpu xvfb-run -a -s "-screen 0 1400x900x24 +extension RANDR" python -m pytest -vvv ./tests

This did not solve my issue since I got the same error. Note that the tests run perfectly fine locally on my laptop.

Traceback:

    from pyglet.window import key
/root/miniconda3/envs/myenv-3.10-cpu/lib/python3.10/site-packages/pyglet/window/__init__.py:1929: in <module>
    gl._create_shadow_window()
/root/miniconda3/envs/myenv-3.10-cpu/lib/python3.10/site-packages/pyglet/gl/__init__.py:165: in _create_shadow_window
    _shadow_window = ShadowWindow()
/root/miniconda3/envs/myenv-3.10-cpu/lib/python3.10/site-packages/pyglet/gl/__init__.py:159: in __init__
    super().__init__(width=1, height=1, visible=False)

This is an example test that will fail with the prementioned error:

def test_pyglet():
 import pyglet

 window = pyglet.window.Window()

 label = pyglet.text.Label('Hello, world',
                          font_name='Times New Roman',
                          font_size=36,
                          x=window.width // 2, y=window.height // 2,
                          anchor_x='center', anchor_y='center')

 @window.event
 def on_draw():
    window.clear()
    label.draw()

 pyglet.app.run()

Answer 1

ckeck this code snippet.

before_script:
  - apt-get install -y xorg-dev libglu1-mesa libgl1-mesa-dev xvfb libxinerama1 libxcursor1
  - export DISPLAY=:0
  - Xvfb $DISPLAY -screen 0 1400x900x24 +extension RANDR &

script:
  - conda run -n myenv-3.10-cpu python -m pytest -vvv ./tests