cpython/Lib/test/test_support.py

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#!/usr/bin/env python
import importlib
import sys
import os
import unittest
import socket
import tempfile
import errno
from test import support
TESTFN = support.TESTFN
TESTDIRN = os.path.basename(tempfile.mkdtemp(dir='.'))
class TestSupport(unittest.TestCase):
def setUp(self):
support.unlink(TESTFN)
support.rmtree(TESTDIRN)
tearDown = setUp
def test_import_module(self):
support.import_module("ftplib")
self.assertRaises(unittest.SkipTest, support.import_module, "foo")
def test_import_fresh_module(self):
support.import_fresh_module("ftplib")
def test_get_attribute(self):
self.assertEqual(support.get_attribute(self, "test_get_attribute"),
self.test_get_attribute)
self.assertRaises(unittest.SkipTest, support.get_attribute, self, "foo")
@unittest.skip("failing buildbots")
def test_get_original_stdout(self):
self.assertEqual(support.get_original_stdout(), sys.stdout)
def test_unload(self):
import sched
self.assertIn("sched", sys.modules)
support.unload("sched")
self.assertNotIn("sched", sys.modules)
def test_unlink(self):
with open(TESTFN, "w") as f:
pass
support.unlink(TESTFN)
self.assertFalse(os.path.exists(TESTFN))
support.unlink(TESTFN)
def test_rmtree(self):
os.mkdir(TESTDIRN)
os.mkdir(os.path.join(TESTDIRN, TESTDIRN))
support.rmtree(TESTDIRN)
self.assertFalse(os.path.exists(TESTDIRN))
support.rmtree(TESTDIRN)
def test_forget(self):
mod_filename = TESTFN + '.py'
with open(mod_filename, 'w') as f:
print('foo = 1', file=f)
sys.path.insert(0, os.curdir)
importlib.invalidate_caches()
try:
mod = __import__(TESTFN)
self.assertIn(TESTFN, sys.modules)
support.forget(TESTFN)
self.assertNotIn(TESTFN, sys.modules)
finally:
del sys.path[0]
support.unlink(mod_filename)
def test_HOST(self):
s = socket.socket()
s.bind((support.HOST, 0))
s.close()
def test_find_unused_port(self):
port = support.find_unused_port()
s = socket.socket()
s.bind((support.HOST, port))
s.close()
def test_bind_port(self):
s = socket.socket()
support.bind_port(s)
s.listen(1)
s.close()
def test_temp_cwd(self):
here = os.getcwd()
with support.temp_cwd(name=TESTFN):
self.assertEqual(os.path.basename(os.getcwd()), TESTFN)
self.assertFalse(os.path.exists(TESTFN))
self.assertTrue(os.path.basename(os.getcwd()), here)
def test_sortdict(self):
self.assertEqual(support.sortdict({3:3, 2:2, 1:1}), "{1: 1, 2: 2, 3: 3}")
def test_make_bad_fd(self):
fd = support.make_bad_fd()
with self.assertRaises(OSError) as cm:
os.write(fd, b"foo")
self.assertEqual(cm.exception.errno, errno.EBADF)
def test_check_syntax_error(self):
support.check_syntax_error(self, "def class")
self.assertRaises(AssertionError, support.check_syntax_error, self, "1")
def test_CleanImport(self):
import importlib
with support.CleanImport("asyncore"):
importlib.import_module("asyncore")
def test_DirsOnSysPath(self):
with support.DirsOnSysPath('foo', 'bar'):
self.assertIn("foo", sys.path)
self.assertIn("bar", sys.path)
self.assertNotIn("foo", sys.path)
self.assertNotIn("bar", sys.path)
def test_captured_stdout(self):
with support.captured_stdout() as s:
print("hello")
self.assertEqual(s.getvalue(), "hello\n")
def test_captured_stderr(self):
with support.captured_stderr() as s:
print("hello", file=sys.stderr)
self.assertEqual(s.getvalue(), "hello\n")
def test_captured_stdin(self):
with support.captured_stdin() as s:
print("hello", file=sys.stdin)
self.assertEqual(s.getvalue(), "hello\n")
def test_gc_collect(self):
support.gc_collect()
def test_python_is_optimized(self):
self.assertIsInstance(support.python_is_optimized(), bool)
def test_swap_attr(self):
class Obj:
x = 1
obj = Obj()
with support.swap_attr(obj, "x", 5):
self.assertEqual(obj.x, 5)
self.assertEqual(obj.x, 1)
def test_swap_item(self):
D = {"item":1}
with support.swap_item(D, "item", 5):
self.assertEqual(D["item"], 5)
self.assertEqual(D["item"], 1)
# XXX -follows a list of untested API
# make_legacy_pyc
# is_resource_enabled
# requires
# fcmp
# umaks
# findfile
# check_warnings
# EnvironmentVarGuard
# TransientResource
# transient_internet
# run_with_locale
# set_memlimit
# bigmemtest
# precisionbigmemtest
# bigaddrspacetest
# requires_resource
# run_doctest
# threading_cleanup
# reap_threads
# reap_children
# strip_python_stderr
# args_from_interpreter_flags
# can_symlink
# skip_unless_symlink
def test_main():
tests = [TestSupport]
support.run_unittest(*tests)
if __name__ == '__main__':
test_main()