diff options
Diffstat (limited to 'Lib/tkinter/test')
-rw-r--r-- | Lib/tkinter/test/support.py | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/Lib/tkinter/test/support.py b/Lib/tkinter/test/support.py index 97212fb..20bd412 100644 --- a/Lib/tkinter/test/support.py +++ b/Lib/tkinter/test/support.py @@ -1,6 +1,42 @@ +import subprocess +import sys +from test import support import tkinter +import unittest + +_tk_available = None + +def check_tk_availability(): + """Check that Tk is installed and available.""" + global _tk_available + + if _tk_available is not None: + return + + if sys.platform == 'darwin': + # The Aqua Tk implementations on OS X can abort the process if + # being called in an environment where a window server connection + # cannot be made, for instance when invoked by a buildbot or ssh + # process not running under the same user id as the current console + # user. Instead, try to initialize Tk under a subprocess. + p = subprocess.Popen( + [sys.executable, '-c', 'import tkinter; tkinter.Button()'], + stdout=subprocess.PIPE, stderr=subprocess.PIPE) + stderr = support.strip_python_stderr(p.communicate()[1]) + if stderr or p.returncode: + raise unittest.SkipTest("tk cannot be initialized: %s" % stderr) + else: + try: + tkinter.Button() + except tkinter.TclError as msg: + # assuming tk is not available + raise unittest.SkipTest("tk not available: %s" % msg) + + _tk_available = True + return def get_tk_root(): + check_tk_availability() # raise exception if tk unavailable try: root = tkinter._default_root except AttributeError: |