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diff --git a/external/contributions/Microsoft/ietcLatest/TestCases/ch15/15.2/15.2.3/15.2.3.7/15.2.3.7-6-a-162.js b/external/contributions/Microsoft/ietcLatest/TestCases/ch15/15.2/15.2.3/15.2.3.7/15.2.3.7-6-a-162.js
new file mode 100644
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+++ b/external/contributions/Microsoft/ietcLatest/TestCases/ch15/15.2/15.2.3/15.2.3.7/15.2.3.7-6-a-162.js
@@ -0,0 +1,41 @@
+/// Copyright (c) 2009 Microsoft Corporation 
+/// 
+/// Redistribution and use in source and binary forms, with or without modification, are permitted provided
+/// that the following conditions are met: 
+///    * Redistributions of source code must retain the above copyright notice, this list of conditions and
+///      the following disclaimer. 
+///    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and 
+///      the following disclaimer in the documentation and/or other materials provided with the distribution.  
+///    * Neither the name of Microsoft nor the names of its contributors may be used to
+///      endorse or promote products derived from this software without specific prior written permission.
+/// 
+/// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+/// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+/// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+/// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+/// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+/// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+/// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+/// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+/**
+ * @path ch15/15.2/15.2.3/15.2.3.7/15.2.3.7-6-a-162.js
+ * @description Object.defineProperties - 'O' is an Array, 'P' is the length property of 'O', the [[Value]] field of 'desc' is less than value of  the length property,  test the [[Writable]] attribute of the length property is set to true at last after deleting properties with large index named if the [[Writable]] field of 'desc' is true (15.4.5.1 step 3.h)
+ */
+
+
+function testcase() {
+    
+        var arr = [0, 1];
+
+        Object.defineProperties(arr, {
+            length: {
+                value: 1,
+                writable: true
+            }
+        });
+
+        arr.length = 10; //try to overwrite length value of arr
+        return !arr.hasOwnProperty("1") && arr.length === 10 && arr[0] === 0;
+    }
+runTestCase(testcase);