Add MODE=optlinux build mode (#141)

third_party/python/Lib/test/test_cosmo.py

@@ -0,0 +1,22 @@
+import os
+import shutil
+import tempfile
+import unittest
+import subprocess
+
+
+class SubprocessTest(unittest.TestCase):
+    def test_execve(self):
+        tmp_dir = tempfile.mkdtemp()
+        self.addCleanup(shutil.rmtree, tmp_dir)
+        exe = os.path.join(tmp_dir, 'hello.com')
+        shutil.copyfile('/zip/.python/test/hello.com', exe)
+        os.chmod(exe, 0755)
+        proc = subprocess.Popen([exe], stdout=subprocess.PIPE)
+        stdout, stderr = proc.communicate()
+        self.assertEqual(b'hello world\n', stdout)
+        self.assertEqual(0, proc.wait())
+
+
+if __name__ == '__main__':
+    unittest.main()