1 files changed, 23 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/toSpliced/length-casted-to-zero.js b/js/src/tests/test262/built-ins/Array/prototype/toSpliced/length-casted-to-zero.js
new file mode 100644
index 0000000000..de36d2c41a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/toSpliced/length-casted-to-zero.js
@@ -0,0 +1,23 @@
+// Copyright (C) 2021 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-array.prototype.toSpliced
+description: >
+  Array.prototype.toSpliced treats its `this` value's `length` property as zero if the
+  property's value is not a positive integer.
+info: |
+  Array.prototype.toSpliced ( start, deleteCount, ...items )
+
+  ...
+  2. Let len be ? LengthOfArrayLike(O).
+  ...
+features: [change-array-by-copy]
+includes: [compareArray.js]
+---*/
+
+assert.compareArray(Array.prototype.toSpliced.call({ length: -2 }, 0, 0, 2, 3), [2, 3]);
+assert.compareArray(Array.prototype.toSpliced.call({ length: "dog" }, 0, 0, 2, 3), [2, 3]);
+assert.compareArray(Array.prototype.toSpliced.call({ length: NaN }, 0, 0, 2, 3), [2, 3]);
+
+reportCompare(0, 0);