1 files changed, 48 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/map/BigInt/speciesctor-get-species-custom-ctor-length.js b/js/src/tests/test262/built-ins/TypedArray/prototype/map/BigInt/speciesctor-get-species-custom-ctor-length.js
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index 0000000000..0e9e7a3fd7
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+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/map/BigInt/speciesctor-get-species-custom-ctor-length.js
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+// Copyright (C) 2018 Peter Wong. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-%typedarray%.prototype.map
+description: >
+  Does not throw a TypeError if new typedArray's length >= len
+info: |
+  22.2.3.19 %TypedArray%.prototype.map ( callbackfn [ , thisArg ] )
+
+  ...
+  6. Let A be ? TypedArraySpeciesCreate(O, « len »).
+  ...
+
+  22.2.4.7 TypedArraySpeciesCreate ( exemplar, argumentList )
+
+  ...
+  4. Return ? TypedArrayCreate(constructor, argumentList).
+
+  22.2.4.6 TypedArrayCreate ( constructor, argumentList )
+
+  ...
+  3. If argumentList is a List of a single Number, then
+    a. If the value of newTypedArray's [[ArrayLength]] internal slot <
+    argumentList[0], throw a TypeError exception.
+  ...
+includes: [testBigIntTypedArray.js]
+features: [BigInt, Symbol.species, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var sample = new TA(2);
+  var customCount, result;
+
+  sample.constructor = {};
+  sample.constructor[Symbol.species] = function() {
+    return new TA(customCount);
+  };
+
+  customCount = 2;
+  result = sample.map(function() { return 0n; });
+  assert.sameValue(result.length, customCount, "length == count");
+
+  customCount = 5;
+  result = sample.map(function() { return 0n; });
+  assert.sameValue(result.length, customCount, "length > count");
+});
+
+reportCompare(0, 0);