gl is a *huge* module. This is a very simple test that insures that

all the modules attributes are present and creates a small criss-cross
window for 5 seconds (example from the documentation :-)  A more
comprehensive test would probably be useful... but maybe overkill.

Lib/test/test_gl.py

+#! /usr/bin/env python
+"""Very simple test script for the SGI gl library extension module
+    taken mostly from the documentation.
+    Roger E. Masse
+"""
+from test_support import verbose
+import gl, GL, time
+
+glattrs = ['RGBcolor', 'RGBcursor', 'RGBmode', 'RGBrange', 'RGBwritemask',
+'__doc__', '__name__', 'addtopup', 'altgetmatrix', 'arc', 'arcf',
+'arcfi', 'arcfs', 'arci', 'arcs', 'attachcursor', 'backbuffer',
+'backface', 'bbox2', 'bbox2i', 'bbox2s', 'bgnclosedline', 'bgnline',
+'bgnpoint', 'bgnpolygon', 'bgnsurface', 'bgntmesh', 'bgntrim',
+'blankscreen', 'blanktime', 'blendfunction', 'blink', 'c3f', 'c3i',
+'c3s', 'c4f', 'c4i', 'c4s', 'callobj', 'charstr', 'chunksize', 'circ',
+'circf', 'circfi', 'circfs', 'circi', 'circs', 'clear',
+'clearhitcode', 'clkoff', 'clkon', 'closeobj', 'cmode', 'cmov',
+'cmov2', 'cmov2i', 'cmov2s', 'cmovi', 'cmovs', 'color', 'colorf',
+'compactify', 'concave', 'cpack', 'crv', 'crvn', 'curorigin',
+'cursoff', 'curson', 'curstype', 'curvebasis', 'curveit',
+'curveprecision', 'cyclemap', 'czclear', 'defbasis', 'defcursor',
+'deflinestyle', 'delobj', 'deltag', 'depthcue', 'devport', 'dglclose',
+'dglopen', 'dither', 'dopup', 'doublebuffer', 'draw', 'draw2',
+'draw2i', 'draw2s', 'drawi', 'drawmode', 'draws', 'editobj',
+'endclosedline', 'endfullscrn', 'endline', 'endpick', 'endpoint',
+'endpolygon', 'endpupmode', 'endselect', 'endsurface', 'endtmesh',
+'endtrim', 'finish', 'font', 'foreground', 'freepup', 'frontbuffer',
+'fudge', 'fullscrn', 'gRGBcolor', 'gRGBmask', 'gammaramp', 'gbegin',
+'gconfig', 'genobj', 'gentag', 'getbackface', 'getbuffer',
+'getbutton', 'getcmmode', 'getcolor', 'getcpos', 'getcursor',
+'getdcm', 'getdepth', 'getdescender', 'getdisplaymode', 'getdrawmode',
+'getfont', 'getgdesc', 'getgpos', 'getheight', 'gethitcode',
+'getlsbackup', 'getlsrepeat', 'getlstyle', 'getlwidth', 'getmap',
+'getmatrix', 'getmcolor', 'getmmode', 'getmonitor',
+'getnurbsproperty', 'getopenobj', 'getorigin', 'getothermonitor',
+'getpattern', 'getplanes', 'getport', 'getresetls', 'getscrmask',
+'getshade', 'getsize', 'getsm', 'gettp', 'getvaluator', 'getvideo',
+'getviewport', 'getwritemask', 'getzbuffer', 'gewrite', 'gflush',
+'ginit', 'glcompat', 'greset', 'gselect', 'gsync', 'gversion',
+'iconsize', 'icontitle', 'imakebackground', 'initnames', 'ismex',
+'isobj', 'isqueued', 'istag', 'keepaspect', 'lRGBrange', 'lampoff',
+'lampon', 'linesmooth', 'linewidth', 'lmbind', 'lmcolor', 'lmdef',
+'loadmatrix', 'loadname', 'logicop', 'lookat', 'lrectread',
+'lrectwrite', 'lsbackup', 'lsetdepth', 'lshaderange', 'lsrepeat',
+'makeobj', 'maketag', 'mapcolor', 'mapw', 'mapw2', 'maxsize',
+'minsize', 'mmode', 'move', 'move2', 'move2i', 'move2s', 'movei',
+'moves', 'multimap', 'multmatrix', 'n3f', 'newpup', 'newtag',
+'noborder', 'noise', 'noport', 'normal', 'nurbscurve', 'nurbssurface',
+'nvarray', 'objdelete', 'objinsert', 'objreplace', 'onemap', 'ortho',
+'ortho2', 'overlay', 'packrect', 'pagecolor', 'pagewritemask',
+'passthrough', 'patch', 'patchbasis', 'patchcurves', 'patchprecision',
+'pclos', 'pdr', 'pdr2', 'pdr2i', 'pdr2s', 'pdri', 'pdrs',
+'perspective', 'pick', 'picksize', 'pixmode', 'pmv', 'pmv2', 'pmv2i',
+'pmv2s', 'pmvi', 'pmvs', 'pnt', 'pnt2', 'pnt2i', 'pnt2s', 'pnti',
+'pnts', 'pntsmooth', 'polarview', 'polf', 'polf2', 'polf2i', 'polf2s',
+'polfi', 'polfs', 'poly', 'poly2', 'poly2i', 'poly2s', 'polyi',
+'polys', 'popattributes', 'popmatrix', 'popname', 'popviewport',
+'prefposition', 'prefsize', 'pupmode', 'pushattributes', 'pushmatrix',
+'pushname', 'pushviewport', 'pwlcurve', 'qdevice', 'qenter', 'qgetfd',
+'qread', 'qreset', 'qtest', 'rcrv', 'rcrvn', 'rdr', 'rdr2', 'rdr2i',
+'rdr2s', 'rdri', 'rdrs', 'readdisplay', 'readsource', 'rect',
+'rectcopy', 'rectf', 'rectfi', 'rectfs', 'recti', 'rects', 'rectzoom',
+'resetls', 'reshapeviewport', 'ringbell', 'rmv', 'rmv2', 'rmv2i',
+'rmv2s', 'rmvi', 'rmvs', 'rot', 'rotate', 'rpatch', 'rpdr', 'rpdr2',
+'rpdr2i', 'rpdr2s', 'rpdri', 'rpdrs', 'rpmv', 'rpmv2', 'rpmv2i',
+'rpmv2s', 'rpmvi', 'rpmvs', 'sbox', 'sboxf', 'sboxfi', 'sboxfs',
+'sboxi', 'sboxs', 'scale', 'screenspace', 'scrmask', 'setbell',
+'setcursor', 'setdepth', 'setlinestyle', 'setmap', 'setmonitor',
+'setnurbsproperty', 'setpattern', 'setpup', 'setshade', 'setvaluator',
+'setvideo', 'shademodel', 'shaderange', 'singlebuffer', 'smoothline',
+'spclos', 'splf', 'splf2', 'splf2i', 'splf2s', 'splfi', 'splfs',
+'stepunit', 'strwidth', 'subpixel', 'swapbuffers', 'swapinterval',
+'swaptmesh', 'swinopen', 'textcolor', 'textinit', 'textport',
+'textwritemask', 'tie', 'tpoff', 'tpon', 'translate', 'underlay',
+'unpackrect', 'unqdevice', 'v2d', 'v2f', 'v2i', 'v2s', 'v3d', 'v3f',
+'v3i', 'v3s', 'v4d', 'v4f', 'v4i', 'v4s', 'varray', 'videocmd',
+'viewport', 'vnarray', 'winattach', 'winclose', 'winconstraints',
+'windepth', 'window', 'winget', 'winmove', 'winopen', 'winpop',
+'winposition', 'winpush', 'winset', 'wintitle', 'wmpack', 'writemask',
+'writepixels', 'xfpt', 'xfpt2', 'xfpt2i', 'xfpt2s', 'xfpt4', 'xfpt4i',
+'xfpt4s', 'xfpti', 'xfpts', 'zbuffer', 'zclear', 'zdraw', 'zfunction',
+'zsource', 'zwritemask']
+
+def main():
+    # insure that we at least have an X display before continuing.
+    import os
+    try:
+	display = os.environ['DISPLAY']
+    except:
+	raise SystemExit
+
+    # touch all the attributes of gl without doing anything
+    if verbose:
+	print 'Touching gl module attributes...'
+    for attr in glattrs:
+	if verbose:
+	    print 'touching: ', attr
+	getattr(gl, attr)
+
+    # create a small 'Crisscross' window
+    if verbose:
+	print 'Creating a small "CrissCross" window...'
+	print 'foreground'
+    gl.foreground()
+    if verbose:
+	print 'prefposition'
+    gl.prefposition(500, 900, 500, 900)
+    if verbose:
+	print 'winopen "CrissCross"'
+    w = gl.winopen('CrissCross')
+    if verbose:
+	print 'ortho2'
+    gl.ortho2(0.0, 400.0, 0.0, 400.0)
+    if verbose:
+	print 'color WHITE'
+    gl.color(GL.WHITE)
+    if verbose:
+	print 'color RED'
+    gl.color(GL.RED)
+    if verbose:
+	print 'bgnline'
+    gl.bgnline()
+    if verbose:
+	print 'v2f'
+    gl.v2f(0.0, 0.0)
+    gl.v2f(400.0, 400.0)
+    if verbose:
+	print 'endline'
+    gl.endline()
+    if verbose:
+	print 'bgnline'
+    gl.bgnline()
+    gl.v2f(400.0, 0.0)
+    gl.v2f(0.0, 400.0)
+    if verbose:
+	print 'Displaying window for 5 seconds...'
+    gl.endline()
+    time.sleep(5)
+    gl.winclose(w)
+    
+main()