1 files changed, 50 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/detached-buffer-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/detached-buffer-throws.js
new file mode 100644
index 0000000000..747595e86b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/detached-buffer-throws.js
@@ -0,0 +1,50 @@
+// Copyright (C) 2021 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-integer-indexed-exotic-objects-defineownproperty-p-desc
+description: >
+  Throws TypeError for valid descriptor & canonical numeric string if buffer is detached.
+info: |
+  [[DefineOwnProperty]] ( P, Desc )
+
+  [...]
+  3. If Type(P) is String, then
+    a. Let numericIndex be ! CanonicalNumericIndexString(P).
+    b. If numericIndex is not undefined, then
+      i. If ! IsValidIntegerIndex(O, numericIndex) is false, return false.
+
+  IsValidIntegerIndex ( O, index )
+
+  [...]
+  2. If IsDetachedBuffer(O.[[ViewedArrayBuffer]]) is true, return false.
+includes: [testBigIntTypedArray.js, detachArrayBuffer.js]
+features: [align-detached-buffer-semantics-with-web-reality, BigInt, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var sample = new TA([0n]);
+  var desc = Object.getOwnPropertyDescriptor(sample, "0");
+  $DETACHBUFFER(sample.buffer);
+
+  assert.throws(TypeError, function() {
+    Object.defineProperty(sample, "0", desc);
+  });
+
+  assert.throws(TypeError, function() {
+    Object.defineProperty(sample, "1", desc);
+  });
+
+  assert.throws(TypeError, function() {
+    Object.defineProperty(sample, "-1", desc);
+  });
+
+  assert.throws(TypeError, function() {
+    Object.defineProperty(sample, "1.5", desc);
+  });
+
+  assert.throws(TypeError, function() {
+    Object.defineProperty(sample, "-0", desc);
+  });
+});
+
+reportCompare(0, 0);