THRIFT-4675: Generate Int64 constants for js
diff --git a/lib/ts/test/test_handler.js b/lib/ts/test/test_handler.js
new file mode 100644
index 0000000..8ba296b
--- /dev/null
+++ b/lib/ts/test/test_handler.js
@@ -0,0 +1,202 @@
+/*
+ * 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.
+ */
+
+//This is the server side Node test handler for the standard
+//  Apache Thrift test service.
+
+const es6Mode = process.argv.includes('--es6');
+const genFolder = es6Mode ? 'gen-nodejs-es6' : 'gen-nodejs';
+const ttypes = require(`./${genFolder}/ThriftTest_types`);
+const TException = require('../../nodejs/lib/thrift').TException;
+const Int64 = require('node-int64');
+
+exports.ThriftTestHandler = {
+  testVoid: function(result) {
+    console.log('testVoid()');
+    result(null);
+  },
+  testString: function(thing, result) {
+    console.log('testString(\'' + thing + '\')');
+    result(null, thing);
+  },
+  testByte: function(thing, result) {
+    console.log('testByte(' + thing + ')');
+    result(null, thing);
+  },
+  testI32: function(thing, result) {
+    console.log('testI32(' + thing + ')');
+    result(null, thing);
+  },
+  testI64: function(thing, result) {
+    console.log('testI64(' + thing + ')');
+    result(null, thing);
+  },
+  testDouble: function(thing, result) {
+    console.log('testDouble(' + thing + ')');
+    result(null, thing);
+  },
+  testBinary: function(thing, result) {
+    console.log('testBinary(\'' + thing + '\')');
+    result(null, thing);
+  },
+  testStruct: function(thing, result) {
+    console.log('testStruct(');
+    console.log(thing);
+    console.log(')');
+    result(null, thing);
+  },
+  testNest: function(nest, result) {
+    console.log('testNest(');
+    console.log(nest);
+    console.log(')');
+    result(null, nest);
+  },
+  testMap: function(thing, result) {
+    console.log('testMap(');
+    console.log(thing);
+    console.log(')');
+    result(null, thing);
+  },
+  testStringMap: function(thing, result) {
+    console.log('testStringMap(');
+    console.log(thing);
+    console.log(')');
+    result(null, thing);
+  },
+  testSet: function(thing, result) {
+    console.log('testSet(');
+    console.log(thing);
+    console.log(')');
+    result(null, thing);
+  },
+  testList: function(thing, result) {
+    console.log('testList(');
+    console.log(thing);
+    console.log(')');
+    result(null, thing);
+  },
+  testEnum: function(thing, result) {
+    console.log('testEnum(' + thing + ')');
+    result(null, thing);
+  },
+  testTypedef: function(thing, result) {
+    console.log('testTypedef(' + thing + ')');
+    result(null, thing);
+  },
+  testMapMap: function(hello, result) {
+    console.log('testMapMap(' + hello + ')');
+
+    const mapmap = [];
+    const pos = [];
+    const neg = [];
+    for (let i = 1; i < 5; i++) {
+      pos[i] = i;
+      neg[-i] = -i;
+    }
+    mapmap[4] = pos;
+    mapmap[-4] = neg;
+
+    result(null, mapmap);
+  },
+  testInsanity: function(argument, result) {
+    console.log('testInsanity(');
+    console.log(argument);
+    console.log(')');
+
+    const hello = new ttypes.Xtruct();
+    hello.string_thing = 'Hello2';
+    hello.byte_thing = 2;
+    hello.i32_thing = 2;
+    hello.i64_thing = new Int64(2);
+
+    const goodbye = new ttypes.Xtruct();
+    goodbye.string_thing = 'Goodbye4';
+    goodbye.byte_thing = 4;
+    goodbye.i32_thing = 4;
+    goodbye.i64_thing = new Int64(4);
+
+    const crazy = new ttypes.Insanity();
+    crazy.userMap = [];
+    crazy.userMap[ttypes.Numberz.EIGHT] = 8;
+    crazy.userMap[ttypes.Numberz.FIVE] = 5;
+    crazy.xtructs = [goodbye, hello];
+
+    const first_map = [];
+    const second_map = [];
+
+    first_map[ttypes.Numberz.TWO] = crazy;
+    first_map[ttypes.Numberz.THREE] = crazy;
+
+    const looney = new ttypes.Insanity();
+    second_map[ttypes.Numberz.SIX] = looney;
+
+    const insane = [];
+    insane[1] = first_map;
+    insane[2] = second_map;
+
+    console.log('insane result:');
+    console.log(insane);
+    result(null, insane);
+  },
+  testMulti: function(arg0, arg1, arg2, arg3, arg4, arg5, result) {
+    console.log('testMulti()');
+
+    const hello = new ttypes.Xtruct();
+    hello.string_thing = 'Hello2';
+    hello.byte_thing = arg0;
+    hello.i32_thing = arg1;
+    hello.i64_thing = arg2;
+    result(null, hello);
+  },
+  testException: function(arg, result) {
+    console.log('testException(' + arg + ')');
+    if (arg === 'Xception') {
+      const x = new ttypes.Xception();
+      x.errorCode = 1001;
+      x.message = arg;
+      result(x);
+    } else if (arg === 'TException') {
+      result(new TException(arg));
+    } else {
+      result(null);
+    }
+  },
+  testMultiException: function(arg0, arg1, result) {
+    console.log('testMultiException(' + arg0 + ', ' + arg1 + ')');
+    if (arg0 === ('Xception')) {
+      const x = new ttypes.Xception();
+      x.errorCode = 1001;
+      x.message = 'This is an Xception';
+      result(x);
+    } else if (arg0 === ('Xception2')) {
+      const x2 = new ttypes.Xception2();
+      x2.errorCode = 2002;
+      x2.struct_thing = new ttypes.Xtruct();
+      x2.struct_thing.string_thing = 'This is an Xception2';
+      result(x2);
+    }
+
+    const res = new ttypes.Xtruct();
+    res.string_thing = arg1;
+    result(null, res);
+  },
+  testOneway: function(sleepFor, result) {
+    console.log('testOneway(' + sleepFor + ') => JavaScript (like Rust) never sleeps!');
+  }
+};   //ThriftTestSvcHandler