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test_spawn.py
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"""Tests for distutils.spawn."""
importos
importstat
importsys
importunittest
fromunittestimportmock
fromtest.supportimportrun_unittest, unix_shell
fromtestimportsupportastest_support
fromdistutils.spawnimportfind_executable
fromdistutils.spawnimport_nt_quote_args
fromdistutils.spawnimportspawn
fromdistutils.errorsimportDistutilsExecError
fromdistutils.testsimportsupport
classSpawnTestCase(support.TempdirManager,
support.LoggingSilencer,
unittest.TestCase):
deftest_nt_quote_args(self):
for (args, wanted) in ((['with space', 'nospace'],
['"with space"', 'nospace']),
(['nochange', 'nospace'],
['nochange', 'nospace'])):
res=_nt_quote_args(args)
self.assertEqual(res, wanted)
@unittest.skipUnless(os.namein ('nt', 'posix'),
'Runs only under posix or nt')
deftest_spawn(self):
tmpdir=self.mkdtemp()
# creating something executable
# through the shell that returns 1
ifsys.platform!='win32':
exe=os.path.join(tmpdir, 'foo.sh')
self.write_file(exe, '#!%s\nexit 1'%unix_shell)
else:
exe=os.path.join(tmpdir, 'foo.bat')
self.write_file(exe, 'exit 1')
os.chmod(exe, 0o777)
self.assertRaises(DistutilsExecError, spawn, [exe])
# now something that works
ifsys.platform!='win32':
exe=os.path.join(tmpdir, 'foo.sh')
self.write_file(exe, '#!%s\nexit 0'%unix_shell)
else:
exe=os.path.join(tmpdir, 'foo.bat')
self.write_file(exe, 'exit 0')
os.chmod(exe, 0o777)
spawn([exe]) # should work without any error
deftest_find_executable(self):
withtest_support.temp_dir() astmp_dir:
# use TESTFN to get a pseudo-unique filename
program_noeext=test_support.TESTFN
# Give the temporary program an ".exe" suffix for all.
# It's needed on Windows and not harmful on other platforms.
program=program_noeext+".exe"
filename=os.path.join(tmp_dir, program)
withopen(filename, "wb"):
pass
os.chmod(filename, stat.S_IXUSR)
# test path parameter
rv=find_executable(program, path=tmp_dir)
self.assertEqual(rv, filename)
ifsys.platform=='win32':
# test without ".exe" extension
rv=find_executable(program_noeext, path=tmp_dir)
self.assertEqual(rv, filename)
# test find in the current directory
withtest_support.change_cwd(tmp_dir):
rv=find_executable(program)
self.assertEqual(rv, program)
# test non-existent program
dont_exist_program="dontexist_"+program
rv=find_executable(dont_exist_program , path=tmp_dir)
self.assertIsNone(rv)
# PATH='': no match, except in the current directory
withtest_support.EnvironmentVarGuard() asenv:
env['PATH'] =''
withunittest.mock.patch('distutils.spawn.os.confstr',
return_value=tmp_dir, create=True), \
unittest.mock.patch('distutils.spawn.os.defpath',
tmp_dir):
rv=find_executable(program)
self.assertIsNone(rv)
# look in current directory
withtest_support.change_cwd(tmp_dir):
rv=find_executable(program)
self.assertEqual(rv, program)
# PATH=':': explicitly looks in the current directory
withtest_support.EnvironmentVarGuard() asenv:
env['PATH'] =os.pathsep
withunittest.mock.patch('distutils.spawn.os.confstr',
return_value='', create=True), \
unittest.mock.patch('distutils.spawn.os.defpath', ''):
rv=find_executable(program)
self.assertIsNone(rv)
# look in current directory
withtest_support.change_cwd(tmp_dir):
rv=find_executable(program)
self.assertEqual(rv, program)
# missing PATH: test os.confstr("CS_PATH") and os.defpath
withtest_support.EnvironmentVarGuard() asenv:
env.pop('PATH', None)
# without confstr
withunittest.mock.patch('distutils.spawn.os.confstr',
side_effect=ValueError,
create=True), \
unittest.mock.patch('distutils.spawn.os.defpath',
tmp_dir):
rv=find_executable(program)
self.assertEqual(rv, filename)
# with confstr
withunittest.mock.patch('distutils.spawn.os.confstr',
return_value=tmp_dir, create=True), \
unittest.mock.patch('distutils.spawn.os.defpath', ''):
rv=find_executable(program)
self.assertEqual(rv, filename)
deftest_suite():
returnunittest.makeSuite(SpawnTestCase)
if__name__=="__main__":
run_unittest(test_suite())
