test: fix setUp()

Drop database for non-SQLite connections.

Author: kenjis

tests/system/Commands/CreateDatabaseTest.php

@@ -12,7 +12,7 @@
 namespace CodeIgniter\Commands;
 
 use CodeIgniter\Database\BaseConnection;
-use CodeIgniter\Database\SQLite3\Connection;
+use CodeIgniter\Database\SQLite3\Connection as SQLite3Connection;
 use CodeIgniter\Test\CIUnitTestCase;
 use CodeIgniter\Test\Filters\CITestStreamFilter;
 use Config\Database;
@@ -39,9 +39,13 @@ protected function setUp(): void
 
         parent::setUp();
 
-        $file = WRITEPATH . 'foobar.db';
-        if (file_exists($file)) {
-            unlink($file);
+        if ($this->connection instanceof SQLite3Connection) {
+            $file = WRITEPATH . 'foobar.db';
+            if (file_exists($file)) {
+                unlink($file);
+            }
+        } else {
+            Database::forge()->dropDatabase('foobar');
         }
     }
 
@@ -65,7 +69,7 @@ public function testCreateDatabase()
 
     public function testSqliteDatabaseDuplicated()
     {
-        if (! $this->connection instanceof Connection) {
+        if (! $this->connection instanceof SQLite3Connection) {
             $this->markTestSkipped('Needs to run on SQLite3.');
         }
 
@@ -78,7 +82,7 @@ public function testSqliteDatabaseDuplicated()
 
     public function testOtherDriverDuplicatedDatabase()
     {
-        if ($this->connection instanceof Connection) {
+        if ($this->connection instanceof SQLite3Connection) {
             $this->markTestSkipped('Needs to run on non-SQLite3 drivers.');
         }