mirror of
https://github.com/python/cpython.git
synced 2025-11-03 23:21:29 +00:00
46 lines
1.5 KiB
Python
46 lines
1.5 KiB
Python
import os
|
|
import sys
|
|
import unittest
|
|
import test.support as test_support
|
|
from tkinter import Tcl, TclError
|
|
|
|
test_support.requires('gui')
|
|
|
|
class TkLoadTest(unittest.TestCase):
|
|
|
|
@unittest.skipIf('DISPLAY' not in os.environ, 'No $DISPLAY set.')
|
|
def testLoadTk(self):
|
|
tcl = Tcl()
|
|
self.assertRaises(TclError,tcl.winfo_geometry)
|
|
tcl.loadtk()
|
|
self.assertEqual('1x1+0+0', tcl.winfo_geometry())
|
|
tcl.destroy()
|
|
|
|
def testLoadTkFailure(self):
|
|
old_display = None
|
|
if sys.platform.startswith(('win', 'darwin', 'cygwin')):
|
|
# no failure possible on windows?
|
|
|
|
# XXX Maybe on tk older than 8.4.13 it would be possible,
|
|
# see tkinter.h.
|
|
return
|
|
with test_support.EnvironmentVarGuard() as env:
|
|
if 'DISPLAY' in os.environ:
|
|
del env['DISPLAY']
|
|
# on some platforms, deleting environment variables
|
|
# doesn't actually carry through to the process level
|
|
# because they don't support unsetenv
|
|
# If that's the case, abort.
|
|
with os.popen('echo $DISPLAY') as pipe:
|
|
display = pipe.read().strip()
|
|
if display:
|
|
return
|
|
|
|
tcl = Tcl()
|
|
self.assertRaises(TclError, tcl.winfo_geometry)
|
|
self.assertRaises(TclError, tcl.loadtk)
|
|
|
|
tests_gui = (TkLoadTest, )
|
|
|
|
if __name__ == "__main__":
|
|
test_support.run_unittest(*tests_gui)
|