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-rw-r--r--js/src/tests/test262/built-ins/Array/prototype/toSorted/comparefn-not-a-function.js35
1 files changed, 35 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/toSorted/comparefn-not-a-function.js b/js/src/tests/test262/built-ins/Array/prototype/toSorted/comparefn-not-a-function.js
new file mode 100644
index 0000000000..3a3e64627e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/toSorted/comparefn-not-a-function.js
@@ -0,0 +1,35 @@
+// 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.toSorted
+description: >
+ Array.prototype.toSorted verifies that the comparator is callable before reading the length.
+info: |
+ Array.prototype.toSorted ( compareFn )
+
+ 1. If comparefn is not undefined and IsCallable(comparefn) is false, throw a TypeError exception.
+ 2. ...
+ 3. Let len be ? LengthOfArrayLike(O).
+features: [change-array-by-copy]
+---*/
+
+var getLengthThrow = {
+ get length() {
+ throw new Test262Error("IsCallable(comparefn) should be observed before this.length");
+ }
+};
+
+var invalidComparators = [null, true, false, "", /a/g, 42, 42n, [], {}, Symbol()];
+
+for (var i = 0; i < invalidComparators.length; i++) {
+ assert.throws(TypeError, function() {
+ [1].toSorted(invalidComparators[i]);
+ }, String(invalidComparators[i]) + " on an array");
+
+ assert.throws(TypeError, function() {
+ Array.prototype.toSorted.call(getLengthThrow, invalidComparators[i]);
+ }, String(invalidComparators[i]) + " on an object whose 'length' throws");
+}
+
+reportCompare(0, 0);