1 files changed, 32 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/findLast/detached-buffer.js b/js/src/tests/test262/built-ins/TypedArray/prototype/findLast/detached-buffer.js
new file mode 100644
index 0000000000..4aa8408d8b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/findLast/detached-buffer.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2021 Microsoft. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-%typedarray%.prototype.findlast
+description: Throws a TypeError if this has a detached buffer
+info: |
+  %TypedArray%.prototype.findLast  (predicate [ , thisArg ] )
+
+  2. Perform ? ValidateTypedArray(O).
+
+  22.2.3.5.1 Runtime Semantics: ValidateTypedArray ( O )
+
+  ...
+  5. If IsDetachedBuffer(buffer) is true, throw a TypeError exception.
+  ...
+includes: [testTypedArray.js, detachArrayBuffer.js]
+features: [TypedArray, array-find-from-last]
+---*/
+
+var predicate = function() {
+  throw new Test262Error();
+};
+
+testWithTypedArrayConstructors(function(TA) {
+  var sample = new TA(1);
+  $DETACHBUFFER(sample.buffer);
+  assert.throws(TypeError, function() {
+    sample.findLast(predicate);
+  });
+});
+
+reportCompare(0, 0);