patch-nad0013t  Add test for PYTHONEXECUTABLE.

APPLIES:    py3k, 3.0

diff -r c22e80f49e71 Lib/test/test_osx_env.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ Lib/test/test_osx_env.py	Thu Feb 05 15:44:04 2009 -0800
@@ -0,0 +1,35 @@
+"""
+Test suite for OS X interpreter environment variables.
+"""
+
+from test.support import EnvironmentVarGuard, run_unittest
+import subprocess
+import sys
+import unittest
+
+class OSXEnvironmentVariableTestCase(unittest.TestCase):
+    def _check_sys(self, ev, cond, sv, val = '/some/path/to/python'):
+        with EnvironmentVarGuard() as evg:
+            subpc = [str(sys.executable), '-c',
+                'import sys; sys.exit(2 if "%s" %s %s else 3)' % (val, cond, sv)]
+            # ensure environment variable does not exist
+            evg.unset(ev)
+            # test that test on sys.xxx normally fails
+            rc = subprocess.call(subpc)
+            self.assertEqual(rc, 3, "expected %s not %s %s" % (ev, cond, sv))
+            # set environ variable 
+            evg.set(ev, val)
+            # test that sys.xxx has been influenced by the environ value
+            rc = subprocess.call(subpc)
+            self.assertEqual(rc, 2, "expected %s %s %s" % (ev, cond, sv))
+
+    def test_pythonexecutable_sets_sys_executable(self):
+        self._check_sys('PYTHONEXECUTABLE', '==', 'sys.executable')
+
+def test_main():
+    if sys.platform == 'darwin':
+        run_unittest(OSXEnvironmentVariableTestCase)
+
+if __name__ == "__main__":
+    test_main()
+