chore: Update icu4j to 78.3

locales-common/src/test/java/com/spotify/i18n/locales/common/impl/LocalesResolverBaseImplTest.java

@@ -187,7 +187,7 @@ static Stream<Arguments> whenResolvingUnsupportedLocale_returnBetterDefaultLocal
         Arguments.of(
             "et-EE",
             supportedLocales,
-            ResolvedLocale.fromLanguageTags("en-GB", List.of("en"), "en-GB")),
+            ResolvedLocale.fromLanguageTags("en-GB", List.of("en"), "en-EE")),
         // Dutch (Netherlands)
         Arguments.of(
             "nl-NL",

locales-common/src/test/java/com/spotify/i18n/locales/common/impl/ReferenceLocalesCalculatorBaseImplTest.java

@@ -291,20 +291,22 @@ private static List<RelatedReferenceLocale> english() {
         rrl("en-DG", SAME),
         rrl("en-DK", SAME),
         rrl("en-DM", SAME),
+        rrl("en-EE", SAME),
         rrl("en-ER", SAME),
         rrl("en-ES", SAME),
         rrl("en-FI", SAME),
         rrl("en-FJ", SAME),
-        rrl("en-FR", SAME),
         rrl("en-FK", SAME),
         rrl("en-FM", SAME),
+        rrl("en-FR", SAME),
         rrl("en-GB", SAME),
-        rrl("en-GS", SAME),
         rrl("en-GD", SAME),
+        rrl("en-GE", SAME),
         rrl("en-GG", SAME),
         rrl("en-GH", SAME),
         rrl("en-GI", SAME),
         rrl("en-GM", SAME),
+        rrl("en-GS", SAME),
         rrl("en-GU", SAME),
         rrl("en-GY", SAME),
         rrl("en-HK", SAME),
@@ -318,13 +320,16 @@ private static List<RelatedReferenceLocale> english() {
         rrl("en-IT", SAME),
         rrl("en-JE", SAME),
         rrl("en-JM", SAME),
+        rrl("en-JP", SAME),
         rrl("en-KE", SAME),
         rrl("en-KI", SAME),
         rrl("en-KN", SAME),
         rrl("en-KY", SAME),
         rrl("en-LC", SAME),
         rrl("en-LR", SAME),
         rrl("en-LS", SAME),
+        rrl("en-LT", SAME),
+        rrl("en-LV", SAME),
         rrl("en-MG", SAME),
         rrl("en-MH", SAME),
         rrl("en-MO", SAME),
@@ -371,6 +376,7 @@ private static List<RelatedReferenceLocale> english() {
         rrl("en-TT", SAME),
         rrl("en-TV", SAME),
         rrl("en-TZ", SAME),
+        rrl("en-UA", SAME),
         rrl("en-UG", SAME),
         rrl("en-UM", SAME),
         rrl("en-VC", SAME),
@@ -474,7 +480,15 @@ private static List<RelatedReferenceLocale> german() {
   }
 
   private static List<RelatedReferenceLocale> italian() {
-    return List.of(rrl("it", SAME), rrl("it-CH", SAME), rrl("it-SM", SAME), rrl("it-VA", SAME));
+    return List.of(
+        // Italian
+        rrl("it", SAME),
+        rrl("it-CH", SAME),
+        rrl("it-SM", SAME),
+        rrl("it-VA", SAME),
+
+        // Sicilian
+        rrl("scn", LOW));
   }
 
   private static List<RelatedReferenceLocale> norwegian() {

locales-utils/src/test/java/com/spotify/i18n/locales/utils/hierarchy/LocalesHierarchyUtilsTest.java

@@ -47,8 +47,8 @@ class LocalesHierarchyUtilsTest {
   void languageCodesWithMultipleScriptsInCldr() {
     final Set<String> expectedLanguageCodesWithMultipleScriptsInCldr =
         Set.of(
-            "az", "bs", "ff", "hi", "kk", "kok", "ks", "kxv", "mni", "pa", "sat", "sd", "shi", "sr",
-            "su", "uz", "vai", "yue", "zh");
+            "az", "bs", "ff", "hi", "kk", "kok", "ks", "ku", "kxv", "mni", "pa", "sat", "sd", "shi",
+            "sr", "su", "uz", "vai", "yue", "zh");
 
     assertEquals(
         expectedLanguageCodesWithMultipleScriptsInCldr.size(),
@@ -78,7 +78,7 @@ static Stream<Arguments> getDescendantLocales() {
             "fr",
             "fr-BE,fr-BF,fr-BI,fr-BJ,fr-BL,fr-CA,fr-CD,fr-CF,fr-CG,fr-CH,fr-CI,fr-CM,fr-DJ,fr-DZ,fr-FR,fr-GA,fr-GF,fr-GN,fr-GP,fr-GQ,fr-HT,fr-KM,fr-LU,fr-MA,fr-MC,fr-MF,fr-MG,fr-ML,fr-MQ,fr-MR,fr-MU,fr-NC,fr-NE,fr-PF,fr-PM,fr-RE,fr-RW,fr-SC,fr-SN,fr-SY,fr-TD,fr-TG,fr-TN,fr-VU,fr-WF,fr-YT",
             "en",
-            "en-001,en-150,en-AE,en-AG,en-AI,en-AS,en-AT,en-AU,en-BB,en-BE,en-BI,en-BM,en-BS,en-BW,en-BZ,en-CA,en-CC,en-CH,en-CK,en-CM,en-CX,en-CY,en-CZ,en-DE,en-DG,en-DK,en-DM,en-ER,en-ES,en-FI,en-FJ,en-FK,en-FM,en-FR,en-GB,en-GD,en-GG,en-GH,en-GI,en-GM,en-GS,en-GU,en-GY,en-HK,en-HU,en-ID,en-IE,en-IL,en-IM,en-IN,en-IO,en-IT,en-JE,en-JM,en-KE,en-KI,en-KN,en-KY,en-LC,en-LR,en-LS,en-MG,en-MH,en-MO,en-MP,en-MS,en-MT,en-MU,en-MV,en-MW,en-MY,en-NA,en-NF,en-NG,en-NL,en-NO,en-NR,en-NU,en-NZ,en-PG,en-PH,en-PK,en-PL,en-PN,en-PR,en-PT,en-PW,en-RO,en-RW,en-SB,en-SC,en-SD,en-SE,en-SG,en-SH,en-SI,en-SK,en-SL,en-SS,en-SX,en-SZ,en-TC,en-TK,en-TO,en-TT,en-TV,en-TZ,en-UG,en-UM,en-US,en-VC,en-VG,en-VI,en-VU,en-WS,en-ZA,en-ZM,en-ZW,hi-Latn,hi-Latn-IN",
+            "en-001,en-150,en-AE,en-AG,en-AI,en-AS,en-AT,en-AU,en-BB,en-BE,en-BI,en-BM,en-BS,en-BW,en-BZ,en-CA,en-CC,en-CH,en-CK,en-CM,en-CX,en-CY,en-CZ,en-DE,en-DG,en-DK,en-DM,en-EE,en-ER,en-ES,en-FI,en-FJ,en-FK,en-FM,en-FR,en-GB,en-GD,en-GE,en-GG,en-GH,en-GI,en-GM,en-GS,en-GU,en-GY,en-HK,en-HU,en-ID,en-IE,en-IL,en-IM,en-IN,en-IO,en-IT,en-JE,en-JM,en-JP,en-KE,en-KI,en-KN,en-KY,en-LC,en-LR,en-LS,en-LT,en-LV,en-MG,en-MH,en-MO,en-MP,en-MS,en-MT,en-MU,en-MV,en-MW,en-MY,en-NA,en-NF,en-NG,en-NL,en-NO,en-NR,en-NU,en-NZ,en-PG,en-PH,en-PK,en-PL,en-PN,en-PR,en-PT,en-PW,en-RO,en-RW,en-SB,en-SC,en-SD,en-SE,en-SG,en-SH,en-SI,en-SK,en-SL,en-SS,en-SX,en-SZ,en-TC,en-TK,en-TO,en-TT,en-TV,en-TZ,en-UA,en-UG,en-UM,en-US,en-VC,en-VG,en-VI,en-VU,en-WS,en-ZA,en-ZM,en-ZW,hi-Latn,hi-Latn-IN",
             "zh-Hant",
             "zh-Hant-HK,zh-Hant-MO,zh-Hant-MY,zh-Hant-TW")
         .entrySet()
@@ -176,42 +176,45 @@ public void allRootChildLocalesAreHighestAncestorLocales() {
     }
   }
 
-  @Test
-  public void whenCallingIsLanguageWrittenInSeveralScripts_returnsExpected() {
-    final Set<String> uniqueLanguageCodes =
-        AvailableLocalesUtils.getCldrLocales().stream()
-            .map(ULocale::getLanguage)
-            .collect(Collectors.toSet());
-    for (String languageCode : uniqueLanguageCodes) {
-      switch (languageCode) {
-        case "az":
-        case "bs":
-        case "ff":
-        case "hi":
-        case "kk":
-        case "kok":
-        case "ks":
-        case "kxv":
-        case "mni":
-        case "pa":
-        case "sat":
-        case "sd":
-        case "shi":
-        case "sr":
-        case "su":
-        case "uz":
-        case "vai":
-        case "yue":
-        case "zh":
-          assertTrue(LocalesHierarchyUtils.isLanguageWrittenInSeveralScripts(languageCode));
-          break;
-        default:
-          assertFalse(LocalesHierarchyUtils.isLanguageWrittenInSeveralScripts(languageCode));
-          break;
-      }
+  @ParameterizedTest
+  @MethodSource
+  void whenCallingIsLanguageWrittenInSeveralScripts_returnsExpected(final String languageCode) {
+    switch (languageCode) {
+      case "az":
+      case "bs":
+      case "ff":
+      case "hi":
+      case "kk":
+      case "kok":
+      case "ks":
+      case "ku":
+      case "kxv":
+      case "mni":
+      case "pa":
+      case "sat":
+      case "sd":
+      case "shi":
+      case "sr":
+      case "su":
+      case "uz":
+      case "vai":
+      case "yue":
+      case "zh":
+        assertTrue(LocalesHierarchyUtils.isLanguageWrittenInSeveralScripts(languageCode));
+        break;
+      default:
+        assertFalse(LocalesHierarchyUtils.isLanguageWrittenInSeveralScripts(languageCode));
+        break;
     }
   }
 
+  static Stream<Arguments> whenCallingIsLanguageWrittenInSeveralScripts_returnsExpected() {
+    return AvailableLocalesUtils.getCldrLocales().stream()
+        .map(ULocale::getLanguage)
+        .distinct()
+        .map(Arguments::of);
+  }
+
   @ParameterizedTest
   @MethodSource
   void emptyParentLocaleForUnsupportedCombinationsOfLanguageScriptCodes(String languageTag) {

locales-utils/src/test/java/com/spotify/i18n/locales/utils/language/LanguageUtilsTest.java

@@ -59,6 +59,7 @@ void canGetWrittenLanguageLocaleForCldrAvailableLocales(final ULocale locale) {
       case "kk":
       case "kok":
       case "ks":
+      case "ku":
       case "kxv":
       case "mni":
       case "pa":
@@ -113,8 +114,10 @@ public void confirmLogicAccountsForAllHighestAncestorLocalesWithScript() {
             "az-Cyrl", // https://www.omniglot.com/writing/azeri.htm
             "bs-Cyrl", // https://www.omniglot.com/writing/bosnian.htm
             "ff-Adlm", // https://www.omniglot.com/writing/fula.htm
+            "kk-Arab", // https://www.omniglot.com/writing/kazakh.htm
             "kok-Latn", // https://www.omniglot.com/writing/konkani.htm
             "ks-Deva", // https://www.omniglot.com/writing/kashmiri.htm
+            "ku-Latn", // https://www.omniglot.com/writing/kurdish.htm
             "kxv-Deva", // https://www.businesswireindia.com/two-of-indias-endangered-languages-kuvi-and-kangri-get-a-lease-of-revival-as-motorola-and-lenovo-foundation-bring-alive-their-indigenous-languages-digital-inclusion-initiative-83131.html
             "kxv-Orya", // https://www.businesswireindia.com/two-of-indias-endangered-languages-kuvi-and-kangri-get-a-lease-of-revival-as-motorola-and-lenovo-foundation-bring-alive-their-indigenous-languages-digital-inclusion-initiative-83131.html
             "kxv-Telu", // https://www.businesswireindia.com/two-of-indias-endangered-languages-kuvi-and-kangri-get-a-lease-of-revival-as-motorola-and-lenovo-foundation-bring-alive-their-indigenous-languages-digital-inclusion-initiative-83131.html

pom.xml

@@ -36,7 +36,7 @@
     <apache.httpcore.version>4.4.16</apache.httpcore.version>
     <google.auto-value.version>1.11.0</google.auto-value.version>
     <google.guava.version>33.3.1-jre</google.guava.version>
-    <icu4j.version>77.1</icu4j.version>
+    <icu4j.version>78.3</icu4j.version>
     <java-hamcrest.version>2.0.0.0</java-hamcrest.version>
     <junit.version>5.11.3</junit.version>
     <mockito.version>5.12.0</mockito.version>