diff --git a/tests/Core/LocalizedLocaleTest.php b/tests/Core/LocalizedLocaleTest.php
index d1f3125..cd8f330 100644
--- a/tests/Core/LocalizedLocaleTest.php
+++ b/tests/Core/LocalizedLocaleTest.php
@@ -42,8 +42,8 @@ public static function provide_test_get_name(): array
     public function test_localize(): void
     {
         $locale = new Locale(get_repository(), LocaleId::of('fr'));
-        $localized = $locale->localized(LocaleId::of('es'));
+        $localized = $locale->localized(LocaleId::of('ja'));
         $this->assertInstanceOf(LocaleLocalized::class, $localized);
-        $this->assertEquals("francés", $localized->name);
+        $this->assertEquals("フランス語", $localized->name);
     }
 }
diff --git a/tests/Dates/LocalizedDateTimeTest.php b/tests/Dates/LocalizedDateTimeTest.php
index 0783e2f..1d5de40 100644
--- a/tests/Dates/LocalizedDateTimeTest.php
+++ b/tests/Dates/LocalizedDateTimeTest.php
@@ -26,7 +26,7 @@ public static function setupBeforeClass(): void
 
         self::$localized_dates['en'] = new LocalizedDateTime($datetime, locale_for('en'));
         self::$localized_dates['fr'] = new LocalizedDateTime($datetime, locale_for('fr'));
-        self::$localized_dates['zh'] = new LocalizedDateTime($datetime, locale_for('zh'));
+        self::$localized_dates['ja'] = new LocalizedDateTime($datetime, locale_for('ja'));
     }
 
     public function test_get_target(): void
@@ -77,10 +77,10 @@ public static function provide_test_as(): array
             [ 'fr', DateTimeFormatLength::MEDIUM, "4 nov. 2013, 20:21:22" ],
             [ 'fr', DateTimeFormatLength::SHORT, "04/11/2013 20:21" ],
 
-            [ 'zh', DateTimeFormatLength::FULL, "2013年11月4日星期一 UTC 20:21:22" ],
-            [ 'zh', DateTimeFormatLength::LONG, "2013年11月4日 UTC 20:21:22" ],
-            [ 'zh', DateTimeFormatLength::MEDIUM, "2013年11月4日 20:21:22" ],
-            [ 'zh', DateTimeFormatLength::SHORT, "2013/11/4 20:21" ],
+            [ 'ja', DateTimeFormatLength::FULL, "2013年11月4日月曜日 20時21分22秒 UTC" ],
+            [ 'ja', DateTimeFormatLength::LONG, "2013年11月4日 20:21:22 UTC" ],
+            [ 'ja', DateTimeFormatLength::MEDIUM, "2013/11/04 20:21:22" ],
+            [ 'ja', DateTimeFormatLength::SHORT, "2013/11/04 20:21" ],
 
         ];
     }
diff --git a/tests/Numbers/NumbersTest.php b/tests/Numbers/NumbersTest.php
index 585a7bb..097ee41 100644
--- a/tests/Numbers/NumbersTest.php
+++ b/tests/Numbers/NumbersTest.php
@@ -97,20 +97,20 @@ public static function provide_symbols(): array
                 )
             ],
             [
-                'ru',
+                'ja',
                 new Symbols(
+                    '.',
                     ',',
-                    ' ',
                     ';',
                     '%',
                     '-',
                     '+',
-                    '≈',
+                    '約',
                     'E',
                     '×',
                     '‰',
                     '∞',
-                    'не число',
+                    'NaN',
                     '.',
                     ',',
                     ':'
diff --git a/tests/Supplemental/Territory/TerritoryTest.php b/tests/Supplemental/Territory/TerritoryTest.php
index 1106cde..9c367f7 100644
--- a/tests/Supplemental/Territory/TerritoryTest.php
+++ b/tests/Supplemental/Territory/TerritoryTest.php
@@ -125,7 +125,7 @@ public static function provide_test_name_as(): array
 
             [ "France", "FR", "fr" ],
             [ "France", "FR", "fr-BE" ],
-            [ "Francia", "FR", "it" ],
+            [ "Frankreich", "FR", "de" ],
             [ "フランス", "FR", "ja" ]
 
         ];
@@ -147,7 +147,7 @@ public static function provide_test_get_name_as(): array
 
             [ "France", "FR", "fr" ],
             [ "France", "FR", "fr_BE" ],
-            [ "Francia", "FR", "it" ],
+            [ "Frankreich", "FR", "de" ],
             [ "フランス", "FR", "ja" ]
 
         ];