Use Utils\is_path_absolute

Author: swissspidy

src/Context/ThenStepDefinitions.php

@@ -4,6 +4,7 @@
 
 use Behat\Gherkin\Node\PyStringNode;
 use Behat\Gherkin\Node\TableNode;
+use WP_CLI\Utils;
 use Exception;
 use Requests;
 use RuntimeException;
@@ -455,10 +456,8 @@ public function then_stdout_stderr_should_be_a_specific_version_string( $stream,
 	public function then_a_specific_file_folder_should_exist( $path, $type, $strictly, $action, $expected = null ): void {
 		$path = $this->replace_variables( $path );
 
-		$is_absolute = preg_match( '#^[a-zA-Z]:\\\\#', $path ) || ( strlen( $path ) > 0 && ( '/' === $path[0] || '\\' === $path[0] ) );
-
 		// If it's a relative path, make it relative to the current test dir.
-		if ( ! $is_absolute ) {
+		if ( ! Utils\is_path_absolute( $path ) ) {
 			$path = $this->variables['RUN_DIR'] . DIRECTORY_SEPARATOR . $path;
 		}