[Intl] Impl LocaleInfo PR 63

tc39/proposal-intl-locale-info#63

Sort collation code alphabetically before return.

Bug: v8:13542
Change-Id: I1c7df69af483a96a1fc7625b11c2b850edc59283
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4094503
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/main@{#84857}

src/objects/js-locale.cc

@@ -531,7 +531,7 @@ MaybeHandle<JSArray> JSLocale::Collations(Isolate* isolate,
   icu::Locale icu_locale(*(locale->icu_locale().raw()));
   return GetKeywordValuesFromLocale<icu::Collator>(
       isolate, "collations", "co", icu_locale, Intl::RemoveCollation, true,
-      false);
+      true);
 }
 
 MaybeHandle<JSArray> JSLocale::HourCycles(Isolate* isolate,

test/intl/assert.js

@@ -292,3 +292,17 @@ function assertLanguageTag(child, parent) {
     fail(child, parent, 'language tag comparison');
   }
 }
+
+function assertArrayEquals(expected, found, name_opt) {
+  var start = "";
+  if (name_opt) {
+    start = name_opt + " - ";
+  }
+  assertEquals(expected.length, found.length, start + "array length");
+  if (expected.length === found.length) {
+    for (var i = 0; i < expected.length; ++i) {
+      assertEquals(expected[i], found[i],
+                   start + "array element at index " + i);
+    }
+  }
+}

test/intl/locale/locale-collations.js

@@ -15,5 +15,6 @@ for (var i = 0; i < a_to_z.length; i++) {
           locale + ".collations [" + locale.collations +
           "] does not meet 'type: alphanum{3,8}(sep alphanum{3,8})*'");
     });
+    assertArrayEquals(locale.collations, locale.collations.sort());
   }
 }