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diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/set/BigInt/bigint-tobiguint64.js b/js/src/tests/test262/built-ins/TypedArray/prototype/set/BigInt/bigint-tobiguint64.js
new file mode 100644
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+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/set/BigInt/bigint-tobiguint64.js
@@ -0,0 +1,89 @@
+// Copyright (C) 2018 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-%typedarray%.prototype.set-array-offset
+description: >
+  Behavior for input array of BigInts
+info: |
+  %TypedArray%.prototype.set ( array [ , offset ] )
+  Sets multiple values in this TypedArray, reading the values from the object
+  array. The optional offset value indicates the first element index in this
+  TypedArray where values are written. If omitted, it is assumed to be 0.
+  ...
+  21. Repeat, while targetByteIndex < limit
+    a. Let Pk be ! ToString(k).
+    b. Let kNumber be ? ToNumber(? Get(src, Pk)).
+    c. Let value be ? Get(src, Pk).
+    d. If target.[[TypedArrayName]] is "BigUint64Array" or "BigInt64Array",
+       let value be ? ToBigInt(value).
+    e. Otherwise, let value be ? ToNumber(value).
+    f. If IsDetachedBuffer(targetBuffer) is true, throw a TypeError exception.
+    g. Perform SetValueInBuffer(targetBuffer, targetByteIndex, targetType,
+       kNumbervalue, true, "Unordered").
+    h. Set k to k + 1.
+    i. Set targetByteIndex to targetByteIndex + targetElementSize.
+  ...
+
+  SetValueInBuffer ( arrayBuffer, byteIndex, type, value, isTypedArray, order [ , isLittleEndian ] )
+  ...
+  8. Let rawBytes be NumberToRawBytes(type, value, isLittleEndian).
+  ...
+
+  NumberToRawBytes( type, value, isLittleEndian )
+  ...
+  3. Else,
+    a. Let n be the Number value of the Element Size specified in Table
+       [The TypedArray Constructors] for Element Type type.
+    b. Let convOp be the abstract operation named in the Conversion Operation
+       column in Table 9 for Element Type type.
+
+  The TypedArray Constructors
+  Element Type: BigUint64
+  Conversion Operation: ToBigUint64
+
+  ToBigUint64 ( argument )
+  The abstract operation ToBigInt64 converts argument to one of 264 integer
+  values in the range -2^63 through 2^63-1, inclusive.
+  This abstract operation functions as follows:
+    1. Let n be ? ToBigInt(argument).
+    2. Let int64bit be n modulo 2^64.
+    3. Return int64bit.
+
+features: [BigInt, TypedArray]
+---*/
+
+var vals = [
+  18446744073709551618n, // 2n ** 64n + 2n
+  9223372036854775810n, // 2n ** 63n + 2n
+  2n,
+  0n,
+  -2n,
+  -9223372036854775810n, // -(2n ** 63n) - 2n
+  -18446744073709551618n, // -(2n ** 64n) - 2n
+];
+
+var typedArray = new BigUint64Array(vals.length);
+typedArray.set(vals);
+
+assert.sameValue(typedArray[0], 2n,
+                 "ToBigUint64(2n ** 64n + 2n) => 2n");
+
+assert.sameValue(typedArray[1], 9223372036854775810n, // 2n ** 63n + 2n
+                 "ToBigUint64(2n ** 63n + 2n) => 9223372036854775810");
+
+assert.sameValue(typedArray[2], 2n,
+                 "ToBigUint64(2n) => 2n");
+
+assert.sameValue(typedArray[3], 0n,
+                 "ToBigUint64(0n) => 0n");
+
+assert.sameValue(typedArray[4], 18446744073709551614n, // 2n ** 64n - 2n
+                 "ToBigUint64( -2n) => 18446744073709551614n");
+
+assert.sameValue(typedArray[5], 9223372036854775806n, // 2n ** 63n - 2n
+                 "ToBigUint64( -(2n ** 63n) - 2n) => 9223372036854775806n");
+
+assert.sameValue(typedArray[6], 18446744073709551614n, // 2n ** 64n - 2n
+                 "ToBigUint64( -(2n ** 64n) - 2n) => 18446744073709551614n");
+
+reportCompare(0, 0);