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diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/findIndex/return-index-predicate-result-is-true.js b/js/src/tests/test262/built-ins/TypedArray/prototype/findIndex/return-index-predicate-result-is-true.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.findindex
+description: >
+  Return index if predicate return a boolean true value.
+info: |
+  22.2.3.11 %TypedArray%.prototype.findIndex ( predicate [ , thisArg ] )
+
+  %TypedArray%.prototype.findIndex is a distinct function that implements the
+  same algorithm as Array.prototype.findIndex as defined in 22.1.3.9 except that
+  the this object's [[ArrayLength]] internal slot is accessed in place of
+  performing a [[Get]] of "length".
+
+  ...
+
+  22.1.3.9 Array.prototype.findIndex ( predicate[ , thisArg ] )
+
+  ...
+  5. Let k be 0.
+  6. Repeat, while k < len
+    ...
+    c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
+    d. If testResult is true, return k.
+  ...
+includes: [testTypedArray.js]
+features: [Symbol, TypedArray]
+---*/
+
+testWithTypedArrayConstructors(function(TA) {
+  var sample = new TA([39, 3, 9]);
+  var called = 0;
+
+  var result = sample.findIndex(function() {
+    called++;
+    return true;
+  });
+
+  assert.sameValue(result, 0, "returned true on sample[0]");
+  assert.sameValue(called, 1, "predicate was called once");
+
+  called = 0;
+  result = sample.findIndex(function(val) {
+    called++;
+    return val === 9;
+  });
+
+  assert.sameValue(called, 3, "predicate was called three times");
+  assert.sameValue(result, 2, "returned true on sample[3]");
+
+  result = sample.findIndex(function() { return "string"; });
+  assert.sameValue(result, 0, "ToBoolean(string)");
+
+  result = sample.findIndex(function() { return {}; });
+  assert.sameValue(result, 0, "ToBoolean(object)");
+
+  result = sample.findIndex(function() { return Symbol(""); });
+  assert.sameValue(result, 0, "ToBoolean(symbol)");
+
+  result = sample.findIndex(function() { return 1; });
+  assert.sameValue(result, 0, "ToBoolean(number)");
+
+  result = sample.findIndex(function() { return -1; });
+  assert.sameValue(result, 0, "ToBoolean(negative number)");
+});
+
+reportCompare(0, 0);