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-rw-r--r--js/src/tests/test262/built-ins/Array/prototype/with/immutable.js19
1 files changed, 19 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/with/immutable.js b/js/src/tests/test262/built-ins/Array/prototype/with/immutable.js
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index 0000000000..04c1621dff
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+++ b/js/src/tests/test262/built-ins/Array/prototype/with/immutable.js
@@ -0,0 +1,19 @@
+// 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.with
+description: >
+ Array.prototype.with does not mutate its this value
+features: [change-array-by-copy]
+includes: [compareArray.js]
+---*/
+
+var arr = [0, 1, 2];
+arr.with(1, 3);
+
+assert.compareArray(arr, [0, 1, 2]);
+assert.notSameValue(arr.with(1, 3), arr);
+assert.notSameValue(arr.with(1, 1), arr);
+
+reportCompare(0, 0);