Import intl test suite from v8-i18n project

test/intl/number-format/protected-icu-internals.js

 // Copyright 2013 the V8 project authors. All rights reserved.
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 // modification, are permitted provided that the following conditions are
 // met:
 //
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 //       with the distribution.
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 //       from this software without specific prior written permission.
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 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 // limitations under the License.
 
-#ifndef V8_EXTENSIONS_I18N_I18N_EXTENSION_H_
-#define V8_EXTENSIONS_I18N_I18N_EXTENSION_H_
+// Internal object we got from native code should not be writable,
+// configurable or enumerable. One can still change its public properties, but
+// we don't use them to do actual work.
 
-#include "v8.h"
+var format = new Intl.NumberFormat([]);
 
-namespace v8_i18n {
+// Direct write should fail.
+format.formatter = {'zzz':'some random object'};
 
-class Extension : public v8::Extension {
- public:
-  Extension();
+assertFalse(format.formatter.hasOwnProperty('zzz'));
 
-  virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
-      v8::Handle<v8::String> name);
+// Try redefining the property.
+var didThrow = false;
+try {
+  Object.defineProperty(format, 'formatter', {value: undefined});
+} catch(e) {
+  didThrow = true;
+}
+assertTrue(didThrow);
 
-  static void Register();
-
- private:
-  static Extension* extension_;
-};
-
-}  // namespace v8_i18n
-
-#endif  // V8_EXTENSIONS_I18N_I18N_EXTENSION_H_
+// Try deleting the property.
+assertFalse(delete format.formatter);