diff --git a/lib/js/test/test-double-rendering.js b/lib/js/test/test-double-rendering.js
new file mode 100644
index 0000000..5d9cd2a
--- /dev/null
+++ b/lib/js/test/test-double-rendering.js
@@ -0,0 +1,143 @@
+/*
+ * 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.
+ */
+ /* jshint -W100 */
+
+/*
+ * JavaScript test suite for double constants inside
+ * DebugProtoTest.thrift. These tests will run against Normal (-gen js)
+ * Apache Thrift interfaces.
+ *
+ * Synchronous blocking calls should be identical in both
+ * Normal and jQuery interfaces. All synchronous tests belong
+ * here.
+ *
+ * Asynchronous success callbacks passed as the last parameter
+ * of an RPC call should be identical in both Normal and jQuery
+ * interfaces. Async success tests belong here.
+ *
+ * Asynchronous exception processing is different in Normal
+ * and jQuery interfaces. Such tests belong in the test-nojq.js
+ * or test-jq.js files respectively. jQuery specific XHR object
+ * tests also belong in test-jq.js. Do not create any jQuery
+ * dependencies in this file or in test-nojq.js
+ *
+ * To compile client code for this test use:
+ *      $ thrift -gen js ThriftTest.thrift
+ *      $ thrift -gen js DebugProtoTest.thrift
+ *
+ * See also:
+ * ++ test-nojq.js for "-gen js" only tests
+ */
+
+// double assertion threshold
+var EPSILON = 0.0000001;
+
+// Work around for old API used by QUnitAdapter of jsTestDriver
+if (typeof QUnit.log == 'function') {
+  // When using real QUnit (fron PhantomJS) log failures to console
+  QUnit.log(function(details) {
+    if (!details.result) {
+      console.log('======== FAIL ========');
+      console.log('TestName: ' + details.name);
+      if (details.message) console.log(details.message);
+      console.log('Expected: ' + details.expected);
+      console.log('Actual  : ' + details.actual);
+      console.log('======================');
+    }
+  });
+}
+
+QUnit.module('Double rendering');
+
+  QUnit.test('Double (rendering)', function(assert) {
+    console.log('Double rendering test -- starts');
+    var EXPECTED_DOUBLE_ASSIGNED_TO_INT_CONSTANT = 1;
+    var EXPECTED_DOUBLE_ASSIGNED_TO_NEGATIVE_INT_CONSTANT = -100;
+    var EXPECTED_DOUBLE_ASSIGNED_TO_LARGEST_INT_CONSTANT = 9223372036854775807;
+    var EXPECTED_DOUBLE_ASSIGNED_TO_SMALLEST_INT_CONSTANT = -9223372036854775807;
+    var EXPECTED_DOUBLE_ASSIGNED_TO_DOUBLE_WITH_MANY_DECIMALS = 3.14159265359;
+    var EXPECTED_DOUBLE_ASSIGNED_TO_FRACTIONAL_DOUBLE = 1000000.1;
+    var EXPECTED_DOUBLE_ASSIGNED_TO_NEGATIVE_FRACTIONAL_DOUBLE = -1000000.1;
+    var EXPECTED_DOUBLE_ASSIGNED_TO_LARGE_DOUBLE = 1.7e+308;
+    var EXPECTED_DOUBLE_ASSIGNED_TO_LARGE_FRACTIONAL_DOUBLE = 9223372036854775816.43;
+    var EXPECTED_DOUBLE_ASSIGNED_TO_SMALL_DOUBLE = -1.7e+308;
+    var EXPECTED_DOUBLE_ASSIGNED_TO_NEGATIVE_BUT_LARGE_FRACTIONAL_DOUBLE = -9223372036854775816.43;
+    assert.ok(
+        Math.abs(EXPECTED_DOUBLE_ASSIGNED_TO_INT_CONSTANT - DOUBLE_ASSIGNED_TO_INT_CONSTANT_TEST) <= EPSILON);
+    assert.ok(
+        Math.abs(
+            EXPECTED_DOUBLE_ASSIGNED_TO_NEGATIVE_INT_CONSTANT -
+            DOUBLE_ASSIGNED_TO_NEGATIVE_INT_CONSTANT_TEST) <= EPSILON);
+    assert.ok(
+        Math.abs(
+            EXPECTED_DOUBLE_ASSIGNED_TO_LARGEST_INT_CONSTANT -
+            DOUBLE_ASSIGNED_TO_LARGEST_INT_CONSTANT_TEST) <= EPSILON);
+    assert.ok(
+        Math.abs(
+            EXPECTED_DOUBLE_ASSIGNED_TO_SMALLEST_INT_CONSTANT -
+            DOUBLE_ASSIGNED_TO_SMALLEST_INT_CONSTANT_TEST) <= EPSILON);
+    assert.ok(
+        Math.abs(
+            EXPECTED_DOUBLE_ASSIGNED_TO_DOUBLE_WITH_MANY_DECIMALS -
+            DOUBLE_ASSIGNED_TO_DOUBLE_WITH_MANY_DECIMALS_TEST) <= EPSILON);
+    assert.ok(
+        Math.abs(
+            EXPECTED_DOUBLE_ASSIGNED_TO_FRACTIONAL_DOUBLE -
+            DOUBLE_ASSIGNED_TO_FRACTIONAL_DOUBLE_TEST) <= EPSILON);
+    assert.ok(
+        Math.abs(
+            EXPECTED_DOUBLE_ASSIGNED_TO_NEGATIVE_FRACTIONAL_DOUBLE -
+            DOUBLE_ASSIGNED_TO_NEGATIVE_FRACTIONAL_DOUBLE_TEST) <= EPSILON);
+    assert.ok(
+        Math.abs(
+            EXPECTED_DOUBLE_ASSIGNED_TO_LARGE_DOUBLE -
+            DOUBLE_ASSIGNED_TO_LARGE_DOUBLE_TEST) <= EPSILON);
+    assert.ok(
+        Math.abs(
+            EXPECTED_DOUBLE_ASSIGNED_TO_LARGE_FRACTIONAL_DOUBLE -
+            DOUBLE_ASSIGNED_TO_LARGE_FRACTIONAL_DOUBLE_TEST) <= EPSILON);
+    assert.ok(
+        Math.abs(
+            EXPECTED_DOUBLE_ASSIGNED_TO_SMALL_DOUBLE -
+            DOUBLE_ASSIGNED_TO_SMALL_DOUBLE_TEST) <= EPSILON);
+    assert.ok(
+        Math.abs(
+            EXPECTED_DOUBLE_ASSIGNED_TO_NEGATIVE_BUT_LARGE_FRACTIONAL_DOUBLE -
+            DOUBLE_ASSIGNED_TO_NEGATIVE_BUT_LARGE_FRACTIONAL_DOUBLE_TEST) <= EPSILON);
+    assert.equal(typeof DOUBLE_ASSIGNED_TO_INT_CONSTANT_TEST, 'number');
+    assert.equal(typeof DOUBLE_ASSIGNED_TO_NEGATIVE_INT_CONSTANT_TEST, 'number');
+    assert.equal(typeof DOUBLE_ASSIGNED_TO_LARGEST_INT_CONSTANT_TEST, 'number');
+    assert.equal(typeof DOUBLE_ASSIGNED_TO_SMALLEST_INT_CONSTANT_TEST, 'number');
+    assert.equal(typeof DOUBLE_ASSIGNED_TO_DOUBLE_WITH_MANY_DECIMALS_TEST, 'number');
+    assert.equal(typeof DOUBLE_ASSIGNED_TO_FRACTIONAL_DOUBLE_TEST, 'number');
+    assert.equal(typeof DOUBLE_ASSIGNED_TO_NEGATIVE_FRACTIONAL_DOUBLE_TEST, 'number');
+    assert.equal(typeof DOUBLE_ASSIGNED_TO_LARGE_DOUBLE_TEST, 'number');
+    assert.equal(typeof DOUBLE_ASSIGNED_TO_LARGE_FRACTIONAL_DOUBLE_TEST, 'number');
+    assert.equal(typeof DOUBLE_ASSIGNED_TO_SMALL_DOUBLE_TEST, 'number');
+    assert.equal(typeof DOUBLE_ASSIGNED_TO_NEGATIVE_BUT_LARGE_FRACTIONAL_DOUBLE_TEST, 'number');
+    var EXPECTED_DOUBLE_LIST =
+        [1,-100,100,9223372036854775807,-9223372036854775807,3.14159265359,1000000.1,-1000000.1,1.7e+308,-1.7e+308,
+            9223372036854775816.43,-9223372036854775816.43];
+    assert.equal(DOUBLE_LIST_TEST.length, EXPECTED_DOUBLE_LIST.length);
+    for (var i = 0; i < EXPECTED_DOUBLE_LIST.length; ++i) {
+           assert.ok(Math.abs(EXPECTED_DOUBLE_LIST[i] - DOUBLE_LIST_TEST[i]) <= EPSILON);
+    }
+    console.log('Double rendering test -- ends');
+  });
+