1 files changed, 32 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/findLast/predicate-not-called-on-empty-array.js b/js/src/tests/test262/built-ins/Array/prototype/findLast/predicate-not-called-on-empty-array.js
new file mode 100644
index 0000000000..c922025e33
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/findLast/predicate-not-called-on-empty-array.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-array.prototype.findlast
+description: >
+  Predicate is only called if this.length is > 0.
+info: |
+  Array.prototype.findLast ( predicate[ , thisArg ] )
+
+  ...
+  4. Let k be len - 1.
+  5. Repeat, while k ≥ 0,
+    ...
+    c. Let testResult be ! ToBoolean(? Call(predicate, thisArg, « kValue, 𝔽(k), O »)).
+  ...
+  6. Return undefined.
+features: [array-find-from-last]
+---*/
+
+var called = false;
+
+var predicate = function() {
+  called = true;
+  return true;
+};
+
+var result = [].findLast(predicate);
+
+assert.sameValue(called, false, '[].findLast(predicate) does not call predicate');
+assert.sameValue(result, undefined, '[].findLast(predicate) returned undefined');
+
+reportCompare(0, 0);