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diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/includes/detached-buffer-during-fromIndex-returns-true-for-undefined.js b/js/src/tests/test262/built-ins/TypedArray/prototype/includes/detached-buffer-during-fromIndex-returns-true-for-undefined.js
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+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/includes/detached-buffer-during-fromIndex-returns-true-for-undefined.js
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+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-%typedarray%.prototype.includes
+description: >
+  Returns true if buffer is detached after ValidateTypedArray and searchElement is undefined
+info: |
+  %TypedArray%.prototype.includes ( searchElement [ , fromIndex ] )
+
+  The interpretation and use of the arguments of %TypedArray%.prototype.includes are the same as for Array.prototype.includes as defined in 22.1.3.13.
+
+  When the includes method is called with one or two arguments, the following steps are taken:
+
+  Let O be the this value.
+  Perform ? ValidateTypedArray(O).
+  Let len be O.[[ArrayLength]].
+  If len is 0, return false.
+  Let n be ? ToIntegerOrInfinity(fromIndex).
+  Assert: If fromIndex is undefined, then n is 0.
+  If n is +∞, return false.
+  Else if n is -∞, set n to 0.
+  If n ≥ 0, then
+    Let k be n.
+  Else,
+    Let k be len + n.
+    If k < 0, set k to 0.
+  Repeat, while k < len,
+    Let elementK be the result of ! Get(O, ! ToString(F(k))).
+    If SameValueZero(searchElement, elementK) is true, return true.
+    Set k to k + 1.
+  Return false.
+
+includes: [testTypedArray.js, detachArrayBuffer.js]
+features: [align-detached-buffer-semantics-with-web-reality, TypedArray]
+---*/
+
+testWithTypedArrayConstructors(function(TA) {
+  const sample = new TA(1);
+  const fromIndex = {
+    valueOf() {
+      $DETACHBUFFER(sample.buffer);
+      return 0;
+    }
+  };
+
+  assert.sameValue(sample.includes(undefined, fromIndex), true);
+});
+
+reportCompare(0, 0);