cpython: b58b0c5c7e96 (original) (raw)

Mercurial > cpython

changeset 71242:b58b0c5c7e96 3.2

Issue #8716: Instead of relying on Aqua Tk exceptions to detect lack of OS X window manager connection in tk tests, use OS X Application Services API calls instead. [#8716]

Ned Deily nad@acm.org
date	Tue, 05 Jul 2011 19:09:37 -0700
parents	807921ba241d
children	2f7e353f9e83 4e83d8f6d496
files	Lib/tkinter/test/support.py
diffstat	1 files changed, 35 insertions(+), 25 deletions(-)[+] [-] Lib/tkinter/test/support.py 60

line wrap: on

line diff

--- a/Lib/tkinter/test/support.py +++ b/Lib/tkinter/test/support.py @@ -1,38 +1,48 @@ -import subprocess import sys -from test import support import tkinter import unittest -_tk_available = None +_tk_unavailable = None def check_tk_availability(): """Check that Tk is installed and available."""

global _tk_available

global _tk_unavailable

if _tk_available is not None:
```
   return[](#l1.19)
```

if _tk_unavailable is None:
```
   _tk_unavailable = False[](#l1.21)
```

   if sys.platform == 'darwin':[](#l1.22)

       # The Aqua Tk implementations on OS X can abort the process if[](#l1.23)

       # being called in an environment where a window server connection[](#l1.24)

       # cannot be made, for instance when invoked by a buildbot or ssh[](#l1.25)

       # process not running under the same user id as the current console[](#l1.26)

       # user.  To avoid that, raise an exception if the window manager[](#l1.27)

       # connection is not available.[](#l1.28)

       from ctypes import cdll, c_int, pointer, Structure[](#l1.29)

       from ctypes.util import find_library[](#l1.30)

       app_services = cdll.LoadLibrary(find_library("ApplicationServices"))[](#l1.32)

if sys.platform == 'darwin':

   # The Aqua Tk implementations on OS X can abort the process if[](#l1.35)

   # being called in an environment where a window server connection[](#l1.36)

   # cannot be made, for instance when invoked by a buildbot or ssh[](#l1.37)

   # process not running under the same user id as the current console[](#l1.38)

   # user.  Instead, try to initialize Tk under a subprocess.[](#l1.39)

```
   p = subprocess.Popen([](#l1.40)
```

           [sys.executable, '-c', 'import tkinter; tkinter.Button()'],[](#l1.41)

           stdout=subprocess.PIPE, stderr=subprocess.PIPE)[](#l1.42)

   stderr = support.strip_python_stderr(p.communicate()[1])[](#l1.43)

```
   if stderr or p.returncode:[](#l1.44)
```

       raise unittest.SkipTest("tk cannot be initialized: %s" % stderr)[](#l1.45)

else:
```
   try:[](#l1.47)
```
```
       tkinter.Button()[](#l1.48)
```

   except tkinter.TclError as msg:[](#l1.49)

       # assuming tk is not available[](#l1.50)

       raise unittest.SkipTest("tk not available: %s" % msg)[](#l1.51)

       if app_services.CGMainDisplayID() == 0:[](#l1.52)

           _tk_unavailable = "cannot run without OS X window manager"[](#l1.53)

```
       else:[](#l1.54)
```

           class ProcessSerialNumber(Structure):[](#l1.55)

               _fields_ = [("highLongOfPSN", c_int),[](#l1.56)

                           ("lowLongOfPSN", c_int)][](#l1.57)

           psn = ProcessSerialNumber()[](#l1.58)

           psn_p = pointer(psn)[](#l1.59)

           if (  (app_services.GetCurrentProcess(psn_p) < 0) or[](#l1.60)

                 (app_services.SetFrontProcess(psn_p) < 0) ):[](#l1.61)

               _tk_unavailable = "cannot run without OS X gui process"[](#l1.62)

```
   else:   # not OS X[](#l1.63)
```
```
       import tkinter[](#l1.64)
```
```
       try:[](#l1.65)
```
```
           tkinter.Button()[](#l1.66)
```

       except tkinter.TclError as msg:[](#l1.67)

           # assuming tk is not available[](#l1.68)

           _tk_unavailable = "tk not available: %s" % msg[](#l1.69)

_tk_available = True

if _tk_unavailable:

   raise unittest.SkipTest(_tk_unavailable)[](#l1.73)

return def get_tk_root():