Do not assume parity between dirname() and wp_unix_dirname() for multiple slashes

Author: adamziel

components/Blueprints/Tests/Unit/Steps/StepTestCase.php

@@ -47,7 +47,7 @@ public function setUp(): void {
 		$this->execution_context      = LocalFilesystem::create( $this->execution_context_path );
 
 		$base_site_root = wp_join_unix_paths( $tmp_dir, 'blueprint_test_base_site' );
-		if ( is_dir( $base_site_root ) && file_exists( $base_site_root . '/wp-load.php' ) ) {
+		if ( is_dir( $base_site_root ) && file_exists( wp_join_unix_paths( $base_site_root, 'wp-load.php' ) ) ) {
 			LocalFilesystem::create( $tmp_dir )->copy(
 				'blueprint_test_base_site',
 				basename( $this->document_root ),

components/Filesystem/Tests/FunctionsTest.php

@@ -84,7 +84,7 @@ public static function wpUnixDirnameProvider() {
 			'Trailing slash: /foo/bar/' => [ '/foo/bar/', 1, '/foo', true ],
 
 			// Multiple slashes
-			'Multiple slashes: //' => [ '//', 1, '/', true ],
+			'Multiple slashes: //' => [ '//', 1, '/', false ],
 			'Multiple slashes: ///' => [ '///', 1, '/', false ],
 
 			// No slash / relative