Use production mode when running on debug VM.

dart/frog/scripts/bootstrap/frog_bootstrap_wrapper.py

 # Copyright 2011 Google Inc. All Rights Reserved.
 
 import os
 import platform
 import shutil
 import stat
 import sys
 
 HOME = os.path.dirname(os.path.realpath(__file__))
 HOME = os.path.join(HOME, os.pardir, os.pardir)
 
 END_SCRIPT = '''
 VM = '%s'
+VM_FLAGS = '%s'
 if __name__ == '__main__':
   sys.exit(main(sys.argv))
 '''
 
 def main(args):
   product_dir = args[1]
   vm = os.path.join(product_dir, 'dart')
   id = platform.system()
   if id == 'Windows' or id == 'Microsoft':
     vm = vm + '.exe'
   frog = os.path.join(product_dir, 'frog', 'bin', 'frog')
 
-  # TODO(ngeoffray): Create a script that will run the VM in production mode.
-  # if js_out.find('Release') != -1:
   shutil.copy(os.path.join(HOME, 'scripts', 'bootstrap', 'frog_wrapper.py'),
               frog)
 
+  if 'Release' in product_dir:
+    # We want to run our tests on the VM in production mode and in
+    # developer mode. It turns out that developer mode is really slow
+    # on the debug VM, so it makes sense to make the pairings:
+    # (release VM, developer mode) and (debug VM, production mode).
+    vm_flags = '--vm_flags=--enable_asserts --enable_type_checks'

[srdjan, 2012/02/07 16:31:00]

Per specification, enabling type checks enables asserts as well, i.e.,
--enable_asserts does not hurt but is not needed.

+  else:
+    vm_flags = ''
+
   with open(frog, 'a+') as f:
-    f.write(END_SCRIPT % vm)
+    f.write(END_SCRIPT % (vm, vm_flags))
 
   os.chmod(frog, stat.S_IXUSR | stat.S_IXGRP | stat.S_IRUSR |
            stat.S_IRGRP | stat.S_IWUSR)
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))