1 files changed, 39 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/findLast/predicate-not-called-on-empty-array.js b/js/src/tests/test262/built-ins/TypedArray/prototype/findLast/predicate-not-called-on-empty-array.js
new file mode 100644
index 0000000000..ffe6e0a944
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/findLast/predicate-not-called-on-empty-array.js
@@ -0,0 +1,39 @@
+// 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: >
+  Predicate is not called on empty instances
+info: |
+  %TypedArray%.prototype.findLast (predicate [ , thisArg ] )
+
+  6. Repeat, while k ≥ 0,
+  ...
+    c. Let testResult be ! ToBoolean(? Call(predicate, thisArg, « kValue, 𝔽(k), O »)).
+  ...
+includes: [testTypedArray.js]
+features: [TypedArray, array-find-from-last]
+---*/
+
+testWithTypedArrayConstructors(function(TA) {
+  var sample = new TA();
+  var called = false;
+
+  var result = sample.findLast(function() {
+    called = true;
+    return true;
+  });
+
+  assert.sameValue(
+    called,
+    false,
+    "empty instance does not call predicate"
+  );
+  assert.sameValue(
+    result,
+    undefined,
+    "findLast returns undefined when predicate is not called"
+  );
+});
+
+reportCompare(0, 0);