1"""Tests for distutils.extension."""
2import unittest
3import os
4import warnings
5
6from test.support import check_warnings, run_unittest
7from distutils.extension import read_setup_file, Extension
8
9class ExtensionTestCase(unittest.TestCase):
10
11    def test_read_setup_file(self):
12        # trying to read a Setup file
13        # (sample extracted from the PyGame project)
14        setup = os.path.join(os.path.dirname(__file__), 'Setup.sample')
15
16        exts = read_setup_file(setup)
17        names = [ext.name for ext in exts]
18        names.sort()
19
20        # here are the extensions read_setup_file should have created
21        # out of the file
22        wanted = ['_arraysurfarray', '_camera', '_numericsndarray',
23                  '_numericsurfarray', 'base', 'bufferproxy', 'cdrom',
24                  'color', 'constants', 'display', 'draw', 'event',
25                  'fastevent', 'font', 'gfxdraw', 'image', 'imageext',
26                  'joystick', 'key', 'mask', 'mixer', 'mixer_music',
27                  'mouse', 'movie', 'overlay', 'pixelarray', 'pypm',
28                  'rect', 'rwobject', 'scrap', 'surface', 'surflock',
29                  'time', 'transform']
30
31        self.assertEqual(names, wanted)
32
33    def test_extension_init(self):
34        # the first argument, which is the name, must be a string
35        self.assertRaises(AssertionError, Extension, 1, [])
36        ext = Extension('name', [])
37        self.assertEqual(ext.name, 'name')
38
39        # the second argument, which is the list of files, must
40        # be a list of strings
41        self.assertRaises(AssertionError, Extension, 'name', 'file')
42        self.assertRaises(AssertionError, Extension, 'name', ['file', 1])
43        ext = Extension('name', ['file1', 'file2'])
44        self.assertEqual(ext.sources, ['file1', 'file2'])
45
46        # others arguments have defaults
47        for attr in ('include_dirs', 'define_macros', 'undef_macros',
48                     'library_dirs', 'libraries', 'runtime_library_dirs',
49                     'extra_objects', 'extra_compile_args', 'extra_link_args',
50                     'export_symbols', 'swig_opts', 'depends'):
51            self.assertEqual(getattr(ext, attr), [])
52
53        self.assertEqual(ext.language, None)
54        self.assertEqual(ext.optional, None)
55
56        # if there are unknown keyword options, warn about them
57        with check_warnings() as w:
58            warnings.simplefilter('always')
59            ext = Extension('name', ['file1', 'file2'], chic=True)
60
61        self.assertEqual(len(w.warnings), 1)
62        self.assertEqual(str(w.warnings[0].message),
63                          "Unknown Extension options: 'chic'")
64
65def test_suite():
66    return unittest.makeSuite(ExtensionTestCase)
67
68if __name__ == "__main__":
69    run_unittest(test_suite())
70