Clean Doltlite lock files in tests

Remove Doltlite's persistent per-database lock file alongside the standard SQLite sidecars so file-based connection tests leave their temporary directories empty.

Author: JanJakes

packages/mysql-on-sqlite/tests/WP_PDO_MySQL_On_SQLite_PDO_API_Tests.php

@@ -598,7 +598,13 @@ public function data_pdo_fetch_methods(): Generator {
 	}
 
 	private function remove_database_files( string $path ): void {
-		foreach ( array( $path, $path . '-wal', $path . '-shm', $path . '-journal' ) as $file ) {
+		foreach ( array(
+			$path,
+			$path . '-wal',
+			$path . '-shm',
+			$path . '-journal',
+			dirname( $path ) . '/.' . basename( $path ) . '-lock',
+		) as $file ) {
 			if ( file_exists( $file ) ) {
 				unlink( $file );
 			}

packages/mysql-on-sqlite/tests/WP_SQLite_Connection_Tests.php

@@ -34,6 +34,7 @@ public function tearDown(): void {
 			$this->db_path . '-wal',
 			$this->db_path . '-shm',
 			$this->db_path . '-journal',
+			dirname( $this->db_path ) . '/.' . basename( $this->db_path ) . '-lock',
 		) as $path ) {
 			if ( is_string( $path ) && file_exists( $path ) ) {
 				unlink( $path );

packages/mysql-on-sqlite/tests/WP_SQLite_Driver_Concurrency_Tests.php

@@ -24,6 +24,7 @@ public function tearDown(): void {
 			$this->db_path . '-wal',
 			$this->db_path . '-shm',
 			$this->db_path . '-journal',
+			dirname( $this->db_path ) . '/.' . basename( $this->db_path ) . '-lock',
 		) as $path ) {
 			if ( is_string( $path ) && file_exists( $path ) ) {
 				unlink( $path );