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diff --git a/js/src/tests/test262/intl402/Intl/supportedValuesOf/collations-accepted-by-Collator.js b/js/src/tests/test262/intl402/Intl/supportedValuesOf/collations-accepted-by-Collator.js
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+// Copyright (C) 2021 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-intl.supportedvaluesof
+description: >
+  The returned "collation" values can be used with Collator.
+info: |
+  Intl.supportedValuesOf ( key )
+
+  1. Let key be ? ToString(key).
+  ...
+  3. Else if key is "collation", then
+    a. Let list be ! AvailableCollations( ).
+  ...
+  9. Return ! CreateArrayFromList( list ).
+
+  AvailableCollations ( )
+    The AvailableCollations abstract operation returns a List, ordered as if an
+    Array of the same values had been sorted using %Array.prototype.sort% using
+    undefined as comparefn, that contains unique collation types identifying the
+    collations for which the implementation provides the functionality of
+    Intl.Collator objects.
+includes: [testIntl.js]
+locale: [en, ar, de, es, ko, ln, si, sv, zh]
+features: [Intl-enumeration, Array.prototype.includes]
+---*/
+
+const collations = Intl.supportedValuesOf("collation");
+
+// Not all locales support all possible collations, so test the minimal set to
+// cover all supported collations.
+//
+// The list of all collations can be derived from
+// <https://github.com/unicode-org/cldr/blob/master/common/bcp47/collation.xml>.
+//
+// Note: "standard" and "search" are explicitly disallowed by Intl.Collator.
+const locales = [
+  "en", // ducet, emoji, eor
+  "ar", // compat
+  "de", // phonebk
+  "es", // trad
+  "hi", // direct
+  "ko", // searchjl
+  "ln", // phonetic
+  "si", // dict
+  "sv", // reformed
+  "zh", // big5han, gb2312, pinyin, stroke, unihan, zhuyin
+];
+
+for (let collation of collations) {
+  let supported = false;
+  for (let locale of locales) {
+    let obj = new Intl.Collator(locale, {collation});
+    if (obj.resolvedOptions().collation === collation) {
+      supported = true;
+      break;
+    }
+  }
+
+  assert(supported, `${collation} is supported by Collator`);
+}
+
+for (let collation of allCollations()) {
+  let supported = false;
+  for (let locale of locales) {
+    let obj = new Intl.Collator(locale, {collation});
+    if (obj.resolvedOptions().collation === collation) {
+      supported = true;
+      break;
+    }
+  }
+
+  if (supported) {
+    assert(collations.includes(collation),
+           `${collation} supported but not returned by supportedValuesOf`);
+  } else {
+    assert(!collations.includes(collation),
+           `${collation} not supported but returned by supportedValuesOf`);
+  }
+}
+
+reportCompare(0, 0);