1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/findLastIndex/invoked-as-method.js b/js/src/tests/test262/built-ins/TypedArray/prototype/findLastIndex/invoked-as-method.js
new file mode 100644
index 0000000000..89ee3f90f7
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+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/findLastIndex/invoked-as-method.js
@@ -0,0 +1,31 @@
+// Copyright (C) 2021 Microsoft. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-%typedarray%.prototype.findlastindex
+description: Requires a [[TypedArrayName]] internal slot.
+info: |
+  %TypedArray%.prototype.findLastIndex ( predicate [ , thisArg ] )
+
+  ...
+  Perform ? ValidateTypedArray(O).
+  ...
+
+  22.2.3.5.1 Runtime Semantics: ValidateTypedArray ( O )
+
+  1. If Type(O) is not Object, throw a TypeError exception.
+  2. If O does not have a [[TypedArrayName]] internal slot, throw a TypeError
+  exception.
+  ...
+includes: [testTypedArray.js]
+features: [TypedArray, array-find-from-last]
+---*/
+
+var TypedArrayPrototype = TypedArray.prototype;
+
+assert.sameValue(typeof TypedArrayPrototype.findLastIndex, 'function');
+
+assert.throws(TypeError, function() {
+  TypedArrayPrototype.findLastIndex();
+});
+
+reportCompare(0, 0);