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diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/fill/coerced-indexes.js b/js/src/tests/test262/built-ins/TypedArray/prototype/fill/coerced-indexes.js
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+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-%typedarray%.prototype.fill
+description: >
+  Fills elements from coerced to Integer `start` and `end` values
+info: |
+  22.2.3.8 %TypedArray%.prototype.fill (value [ , start [ , end ] ] )
+
+  %TypedArray%.prototype.fill is a distinct function that implements the same
+  algorithm as Array.prototype.fill as defined in 22.1.3.6 except that the this
+  object's [[ArrayLength]] internal slot is accessed in place of performing a
+  [[Get]] of "length". The implementation of the algorithm may be optimized with
+  the knowledge that the this value is an object that has a fixed length and
+  whose integer indexed properties are not sparse. However, such optimization
+  must not introduce any observable changes in the specified behaviour of the
+  algorithm.
+
+  ...
+
+  22.1.3.6 Array.prototype.fill (value [ , start [ , end ] ] )
+
+  ...
+  3. Let relativeStart be ? ToInteger(start).
+  4. If relativeStart < 0, let k be max((len + relativeStart), 0); else let k be
+  min(relativeStart, len).
+  5. If end is undefined, let relativeEnd be len; else let relativeEnd be ?
+  ToInteger(end).
+  ...
+includes: [compareArray.js, testTypedArray.js]
+features: [TypedArray]
+---*/
+
+testWithTypedArrayConstructors(function(TA) {
+  assert(
+    compareArray(new TA([0, 0]).fill(1, undefined), [1, 1]),
+    '`undefined` start coerced to 0'
+  );
+
+  assert(
+    compareArray(new TA([0, 0]).fill(1, 0, undefined), [1, 1]),
+    'If end is undefined, let relativeEnd be len'
+  );
+
+  assert(
+    compareArray(new TA([0, 0]).fill(1, null), [1, 1]),
+    '`null` start coerced to 0'
+  );
+
+  assert(
+    compareArray(new TA([0, 0]).fill(1, 0, null), [0, 0]),
+    '`null` end coerced to 0'
+  );
+
+  assert(
+    compareArray(new TA([0, 0]).fill(1, true), [0, 1]),
+    '`true` start coerced to 1'
+  );
+
+  assert(
+    compareArray(new TA([0, 0]).fill(1, 0, true), [1, 0]),
+    '`true` end coerced to 1'
+  );
+
+  assert(
+    compareArray(new TA([0, 0]).fill(1, false), [1, 1]),
+    '`false` start coerced to 0'
+  );
+
+  assert(
+    compareArray(new TA([0, 0]).fill(1, 0, false), [0, 0]),
+    '`false` end coerced to 0'
+  );
+
+  assert(
+    compareArray(new TA([0, 0]).fill(1, NaN), [1, 1]),
+    '`NaN` start coerced to 0'
+  );
+
+  assert(
+    compareArray(new TA([0, 0]).fill(1, 0, NaN), [0, 0]),
+    '`NaN` end coerced to 0'
+  );
+
+  assert(
+    compareArray(new TA([0, 0]).fill(1, '1'), [0, 1]),
+    'string start coerced'
+  );
+
+  assert(
+    compareArray(new TA([0, 0]).fill(1, 0, '1'), [1, 0]),
+    'string end coerced'
+  );
+
+  assert(
+    compareArray(new TA([0, 0]).fill(1, 1.5), [0, 1]),
+    'start as a float number coerced'
+  );
+
+  assert(
+    compareArray(new TA([0, 0]).fill(1, 0, 1.5), [1, 0]),
+    'end as a float number coerced'
+  );
+});
+
+reportCompare(0, 0);