/Lib/ctypes/test/test_find.py

 1import unittest
 2import sys
 3from ctypes import *
 4from ctypes.util import find_library
 5from ctypes.test import is_resource_enabled
 6
 7if sys.platform == "win32":
 8    lib_gl = find_library("OpenGL32")
 9    lib_glu = find_library("Glu32")
10    lib_gle = None
11elif sys.platform == "darwin":
12    lib_gl = lib_glu = find_library("OpenGL")
13    lib_gle = None
14else:
15    lib_gl = find_library("GL")
16    lib_glu = find_library("GLU")
17    lib_gle = find_library("gle")
18
19## print, for debugging
20if is_resource_enabled("printing"):
21    if lib_gl or lib_glu or lib_gle:
22        print "OpenGL libraries:"
23        for item in (("GL", lib_gl),
24                     ("GLU", lib_glu),
25                     ("gle", lib_gle)):
26            print "\t", item
27
28
29# On some systems, loading the OpenGL libraries needs the RTLD_GLOBAL mode.
30class Test_OpenGL_libs(unittest.TestCase):
31    def setUp(self):
32        self.gl = self.glu = self.gle = None
33        if lib_gl:
34            self.gl = CDLL(lib_gl, mode=RTLD_GLOBAL)
35        if lib_glu:
36            self.glu = CDLL(lib_glu, RTLD_GLOBAL)
37        if lib_gle:
38            try:
39                self.gle = CDLL(lib_gle)
40            except OSError:
41                pass
42
43    if lib_gl:
44        def test_gl(self):
45            if self.gl:
46                self.gl.glClearIndex
47
48    if lib_glu:
49        def test_glu(self):
50            if self.glu:
51                self.glu.gluBeginCurve
52
53    if lib_gle:
54        def test_gle(self):
55            if self.gle:
56                self.gle.gleGetJoinStyle
57
58##if os.name == "posix" and sys.platform != "darwin":
59
60##    # On platforms where the default shared library suffix is '.so',
61##    # at least some libraries can be loaded as attributes of the cdll
62##    # object, since ctypes now tries loading the lib again
63##    # with '.so' appended of the first try fails.
64##    #
65##    # Won't work for libc, unfortunately.  OTOH, it isn't
66##    # needed for libc since this is already mapped into the current
67##    # process (?)
68##    #
69##    # On MAC OSX, it won't work either, because dlopen() needs a full path,
70##    # and the default suffix is either none or '.dylib'.
71
72##    class LoadLibs(unittest.TestCase):
73##        def test_libm(self):
74##            import math
75##            libm = cdll.libm
76##            sqrt = libm.sqrt
77##            sqrt.argtypes = (c_double,)
78##            sqrt.restype = c_double
79##            self.failUnlessEqual(sqrt(2), math.sqrt(2))
80
81if __name__ == "__main__":
82    unittest.main()