1 files changed, 42 insertions, 0 deletions
diff --git a/test/built-ins/TypedArray/prototype/toLocaleString/BigInt/get-length-uses-internal-arraylength.js b/test/built-ins/TypedArray/prototype/toLocaleString/BigInt/get-length-uses-internal-arraylength.js
new file mode 100644
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+++ b/test/built-ins/TypedArray/prototype/toLocaleString/BigInt/get-length-uses-internal-arraylength.js
@@ -0,0 +1,42 @@
+// 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.tolocalestring
+description:  Get "length" uses internal ArrayLength
+info: |
+  22.2.3.28 %TypedArray%.prototype.toLocaleString ([ reserved1 [ , reserved2 ] ])
+
+  %TypedArray%.prototype.toLocaleString is a distinct function that implements
+  the same algorithm as Array.prototype.toLocaleString as defined in 22.1.3.27
+  except that the this object's [[ArrayLength]] internal slot is accessed in
+  place of performing a [[Get]] of "length".
+  
+  22.1.3.27 Array.prototype.toLocaleString ( [ reserved1 [ , reserved2 ] ] )
+  
+  1. Let array be ? ToObject(this value).
+  2.Let len be ? ToLength(? Get(array, "length")).
+  ...
+includes: [testBigIntTypedArray.js]
+features: [BigInt, TypedArray]
+---*/
+
+var getCalls = 0;
+var desc = {
+  get: function getLen() {
+    getCalls++;
+    return 0;
+  }
+};
+
+Object.defineProperty(TypedArray.prototype, "length", desc);
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var sample = new TA(convertToBigInt([42, 43]));
+
+  Object.defineProperty(TA.prototype, "length", desc);
+  Object.defineProperty(sample, "length", desc);
+
+  sample.toLocaleString();
+
+  assert.sameValue(getCalls, 0, "ignores length properties");
+});