diff --git a/test/Int64Test.thrift b/test/Int64Test.thrift
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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ * Contains some contributions under the Thrift Software License.
+ * Please see doc/old-thrift-license.txt in the Thrift distribution for
+ * details.
+ */
+
+namespace js Int64Test
+
+const i64 SMALL_INT64 = 42
+const i64 MAX_JS_SAFE_INT64 = 9007199254740991
+const i64 MIN_JS_SAFE_INT64 = -9007199254740991
+const i64 MAX_JS_SAFE_PLUS_ONE_INT64 = 9007199254740992
+const i64 MIN_JS_SAFE_MINUS_ONE_INT64 = -9007199254740992
+const i64 MAX_SIGNED_INT64 = 9223372036854775807
+const i64 MIN_SIGNED_INT64 = -9223372036854775808
+
+const list<i64> INT64_LIST = [SMALL_INT64, MAX_JS_SAFE_INT64, MIN_JS_SAFE_INT64, MAX_JS_SAFE_PLUS_ONE_INT64, MIN_JS_SAFE_MINUS_ONE_INT64, MAX_SIGNED_INT64, MIN_SIGNED_INT64]