fix tests for new default mysql collation

Author: LordSimal

tests/Phinx/Db/Adapter/MysqlAdapterTest.php

@@ -409,7 +409,9 @@ public function testCreateTableAndInheritDefaultCollation()
               ->save();
         $this->assertTrue($adapter->hasTable('table_with_default_collation'));
         $row = $adapter->fetchRow(sprintf("SHOW TABLE STATUS WHERE Name = '%s'", 'table_with_default_collation'));
-        $this->assertEquals('utf8_unicode_ci', $row['Collation']);
+        // This catches legacy collations as well as the new utf8mb3_general_ci default from MySQL 8.0.30+
+        $this->assertStringStartsWith('utf8', $row['Collation']);
+        $this->assertStringEndsWith('_general_ci', $row['Collation']);
     }
 
     public function testCreateTableWithLatin1Collate()
@@ -772,7 +774,9 @@ public function testAddStringColumnWithCustomCollation()
         $table->addColumn('string_collation_default', 'string', [])->save();
         $table->addColumn('string_collation_custom', 'string', ['collation' => 'utf8mb4_unicode_ci'])->save();
         $rows = $this->adapter->fetchAll('SHOW FULL COLUMNS FROM table_custom_collation');
-        $this->assertEquals('utf8_general_ci', $rows[1]['Collation']);
+        // This catches legacy collations as well as the new utf8mb3_general_ci default from MySQL 8.0.30+
+        $this->assertStringStartsWith('utf8', $rows[1]['Collation']);
+        $this->assertStringEndsWith('_general_ci', $rows[1]['Collation']);
         $this->assertEquals('utf8mb4_unicode_ci', $rows[2]['Collation']);
     }