Add test with UTF-8 multibyte symbols

tests/Db/Syntax/SqlParserTest.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yiisoft\Db\Tests\Db\Syntax;
+
+use Yiisoft\Db\Tests\AbstractSqlParserTest;
+use Yiisoft\Db\Tests\Support\Stub\SqlParser;
+
+class SqlParserTest extends AbstractSqlParserTest
+{
+    protected function createSqlParser(string $sql): SqlParser
+    {
+        return new SqlParser($sql);
+    }
+}

tests/Provider/SqlParserProvider.php

@@ -93,6 +93,11 @@ public static function getNextPlaceholder(): array
                 ':name',
                 65,
             ],
+            [
+                "SELECT * FROM {{customer}} WHERE \"Ģ:name\" = '😀 ȧ Привет 中文 :label' AND age = :age",
+                ':age',
+                92,
+            ],
         ];
     }