1 files changed, 26 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/at/index-non-numeric-argument-tointeger-invalid.js b/js/src/tests/test262/built-ins/Array/prototype/at/index-non-numeric-argument-tointeger-invalid.js
new file mode 100644
index 0000000000..224f4a2cfb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/at/index-non-numeric-argument-tointeger-invalid.js
@@ -0,0 +1,26 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.at
+description: >
+  Property type and descriptor.
+info: |
+  Array.prototype.at( index )
+
+  Let relativeIndex be ? ToInteger(index).
+
+features: [Array.prototype.at]
+---*/
+assert.sameValue(
+  typeof Array.prototype.at,
+  'function',
+  'The value of `typeof Array.prototype.at` is expected to be "function"'
+);
+
+let a = [0,1,2,3];
+
+assert.throws(TypeError, () => {
+  a.at(Symbol());
+}, 'a.at(Symbol()) throws a TypeError exception');
+
+reportCompare(0, 0);