1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/toSpliced/this-value-boolean.js b/js/src/tests/test262/built-ins/Array/prototype/toSpliced/this-value-boolean.js
new file mode 100644
index 0000000000..0f97abcd1d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/toSpliced/this-value-boolean.js
@@ -0,0 +1,31 @@
+// 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 converts booleans to objects
+info: |
+  Array.prototype.toSpliced ( start, deleteCount, ...items )
+
+  1. Let O be ? ToObject(this value).
+  2. Let len be ? LengthOfArrayLike(O).
+  ...
+features: [change-array-by-copy]
+includes: [compareArray.js]
+---*/
+
+assert.compareArray(Array.prototype.toSpliced.call(true, 0, 0), []);
+assert.compareArray(Array.prototype.toSpliced.call(false, 0, 0), []);
+
+/* Add length and indexed properties to `Boolean.prototype` */
+Boolean.prototype.length = 3;
+assert.compareArray(Array.prototype.toSpliced.call(true, 0, 0), [undefined, undefined, undefined]);
+assert.compareArray(Array.prototype.toSpliced.call(false, 0, 0), [undefined, undefined, undefined]);
+delete Boolean.prototype.length;
+Boolean.prototype[0] = "monkeys";
+Boolean.prototype[2] = "bogus";
+assert.compareArray(Array.prototype.toSpliced.call(true, 0, 0), []);
+assert.compareArray(Array.prototype.toSpliced.call(false, 0, 0), []);
+
+reportCompare(0, 0);