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EDITING: test_build_clib.py

"""Tests for distutils.command.build_clib."""
import unittest
import os
import sys
import sysconfig

from test.support import (
    missing_compiler_executable, requires_subprocess
)

from distutils.command.build_clib import build_clib
from distutils.errors import DistutilsSetupError
from distutils.tests import support

class BuildCLibTestCase(support.TempdirManager,
                        support.LoggingSilencer,
                        unittest.TestCase):

def setUp(self):
        super().setUp()
        self._backup_CONFIG_VARS = dict(sysconfig._CONFIG_VARS)

def tearDown(self):
        super().tearDown()
        sysconfig._CONFIG_VARS.clear()
        sysconfig._CONFIG_VARS.update(self._backup_CONFIG_VARS)

def test_check_library_dist(self):
        pkg_dir, dist = self.create_dist()
        cmd = build_clib(dist)

# 'libraries' option must be a list
        self.assertRaises(DistutilsSetupError, cmd.check_library_list, 'foo')

# each element of 'libraries' must a 2-tuple
        self.assertRaises(DistutilsSetupError, cmd.check_library_list,
                          ['foo1', 'foo2'])

# first element of each tuple in 'libraries'
        # must be a string (the library name)
        self.assertRaises(DistutilsSetupError, cmd.check_library_list,
                          [(1, 'foo1'), ('name', 'foo2')])

# library name may not contain directory separators
        self.assertRaises(DistutilsSetupError, cmd.check_library_list,
                          [('name', 'foo1'),
                           ('another/name', 'foo2')])

# second element of each tuple must be a dictionary (build info)
        self.assertRaises(DistutilsSetupError, cmd.check_library_list,
                          [('name', {}),
                           ('another', 'foo2')])

# those work
        libs = [('name', {}), ('name', {'ok': 'good'})]
        cmd.check_library_list(libs)

def test_get_source_files(self):
        pkg_dir, dist = self.create_dist()
        cmd = build_clib(dist)

# "in 'libraries' option 'sources' must be present and must be
        # a list of source filenames
        cmd.libraries = [('name', {})]
        self.assertRaises(DistutilsSetupError, cmd.get_source_files)

cmd.libraries = [('name', {'sources': 1})]
        self.assertRaises(DistutilsSetupError, cmd.get_source_files)

cmd.libraries = [('name', {'sources': ['a', 'b']})]
        self.assertEqual(cmd.get_source_files(), ['a', 'b'])

cmd.libraries = [('name', {'sources': ('a', 'b')})]
        self.assertEqual(cmd.get_source_files(), ['a', 'b'])

cmd.libraries = [('name', {'sources': ('a', 'b')}),
                         ('name2', {'sources': ['c', 'd']})]
        self.assertEqual(cmd.get_source_files(), ['a', 'b', 'c', 'd'])

def test_build_libraries(self):

pkg_dir, dist = self.create_dist()
        cmd = build_clib(dist)
        class FakeCompiler:
            def compile(*args, **kw):
                pass
            create_static_lib = compile

cmd.compiler = FakeCompiler()

# build_libraries is also doing a bit of typo checking
        lib = [('name', {'sources': 'notvalid'})]
        self.assertRaises(DistutilsSetupError, cmd.build_libraries, lib)

lib = [('name', {'sources': list()})]
        cmd.build_libraries(lib)

lib = [('name', {'sources': tuple()})]
        cmd.build_libraries(lib)

def test_finalize_options(self):
        pkg_dir, dist = self.create_dist()
        cmd = build_clib(dist)

cmd.include_dirs = 'one-dir'
        cmd.finalize_options()
        self.assertEqual(cmd.include_dirs, ['one-dir'])

cmd.include_dirs = None
        cmd.finalize_options()
        self.assertEqual(cmd.include_dirs, [])

cmd.distribution.libraries = 'WONTWORK'
        self.assertRaises(DistutilsSetupError, cmd.finalize_options)

@unittest.skipIf(sys.platform == 'win32', "can't test on Windows")
    @requires_subprocess()
    def test_run(self):
        pkg_dir, dist = self.create_dist()
        cmd = build_clib(dist)

foo_c = os.path.join(pkg_dir, 'foo.c')
        self.write_file(foo_c, 'int main(void) { return 1;}\n')
        cmd.libraries = [('foo', {'sources': [foo_c]})]

build_temp = os.path.join(pkg_dir, 'build')
        os.mkdir(build_temp)
        cmd.build_temp = build_temp
        cmd.build_clib = build_temp

# Before we run the command, we want to make sure
        # all commands are present on the system.
        ccmd = missing_compiler_executable()
        if ccmd is not None:
            self.skipTest('The %r command is not found' % ccmd)

# this should work
        cmd.run()

# let's check the result
        self.assertIn('libfoo.a', os.listdir(build_temp))

if __name__ == "__main__":
    unittest.main()