Use production mode when running on debug VM.

dart/frog/scripts/bootstrap/frog_bootstrap_wrapper.py

Index: dart/frog/scripts/bootstrap/frog_bootstrap_wrapper.py
diff --git a/dart/frog/scripts/bootstrap/frog_bootstrap_wrapper.py b/dart/frog/scripts/bootstrap/frog_bootstrap_wrapper.py
index f61d8b5e0d0aeaec164dbcb9df68a54d36e23db3..2dda5cef11e7c14b500de259d7cd44aceb177692 100644
--- a/dart/frog/scripts/bootstrap/frog_bootstrap_wrapper.py
+++ b/dart/frog/scripts/bootstrap/frog_bootstrap_wrapper.py
@@ -11,6 +11,7 @@ HOME = os.path.join(HOME, os.pardir, os.pardir)
 
 END_SCRIPT = '''
 VM = '%s'
+VM_FLAGS = '%s'
 if __name__ == '__main__':
   sys.exit(main(sys.argv))
 '''
@@ -23,13 +24,20 @@ def main(args):
     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)