Patch for --symlink support in pyvenv with framework python

Lib/test/test_venv.py

 """
 Test harness for the venv module.
 
 Copyright (C) 2011-2012 Vinay Sajip.
 Licensed to the PSF under a contributor agreement.
 """
 
 import os
 import os.path
 import shutil
@@ skipping 142 matching lines @@
         for usl in (False, True):
             builder = venv.EnvBuilder(clear=True, symlinks=usl)
             builder.create(self.env_dir)
             fn = self.get_env_file(self.bindir, self.exe)
             # Don't test when False, because e.g. 'python' is always
             # symlinked to 'python3.3' in the env, even when symlinking in
             # general isn't wanted.
             if usl:
                 self.assertTrue(os.path.islink(fn))
 
+    def test_executable(self):
+        """
+        Test that the sys.executable value is as expected.
+        """
+        shutil.rmtree(self.env_dir)
+        self.run_with_capture(venv.create, self.env_dir)
+        envpy = os.path.join(os.path.realpath(self.env_dir), self.bindir, self.exe)
+        cmd = [envpy, '-c', 'import sys; print(sys.executable)']
+        p = subprocess.Popen(cmd, stdout=subprocess.PIPE,
+                             stderr=subprocess.PIPE)
+        out, err = p.communicate()
+        self.assertEqual(out[:-1], envpy.encode())
+
+    @unittest.skipUnless(can_symlink(), 'Needs symlinks')
+    def test_executable_symlinks(self):
+        """
+        Test that the sys.executable value is as expected.
+        """
+        shutil.rmtree(self.env_dir)
+        builder = venv.EnvBuilder(clear=True, symlinks=True)
+        builder.create(self.env_dir)
+        envpy = os.path.join(os.path.realpath(self.env_dir), self.bindir, self.exe)
+        cmd = [envpy, '-c', 'import sys; print(sys.executable)']
+        p = subprocess.Popen(cmd, stdout=subprocess.PIPE,
+                             stderr=subprocess.PIPE)
+        out, err = p.communicate()
+        self.assertEqual(out[:-1], envpy.encode())
+
 def test_main():
     run_unittest(BasicTest)
 
 if __name__ == "__main__":
     test_main()