Prevent project creation from crashing in dired

Dired does not set `buffer-file-name`. We have to fallback to
`default-directory` in this case.

Author: stevenremot

ede-php-autoload-composer.el

@@ -190,7 +190,7 @@ information into AUTOLOADS."
   "Auto-detect composer project root.
 
 Return the parent directory of the current buffer file that contains a composer.json file."
-  (let ((dominating-file (locate-dominating-file (buffer-file-name) ede-php-autoload-composer-file)))
+  (let ((dominating-file (locate-dominating-file (or (buffer-file-name) default-directory) ede-php-autoload-composer-file)))
     (when dominating-file
       (file-name-directory dominating-file))))
 

test/ede-php-autoload-test.el

@@ -42,6 +42,11 @@
     (should (string= (car (oref (ede-current-project) :system-include-path))
                      "/usr/share/php"))))
 
+(ert-deftest ede-php-autoload-creates-project-in-dired ()
+  "The EDE php autoload project instanciates properly in a dired buffer."
+  (with-current-project-file "." "without-composer"
+                             (should (ede-php-autoload-project-p (ede-current-project)))))
+
 ;; Class loading tests
 (define-class-definition-test ede-php-autoload-find-psr0 ()
   "The definition for a PSR-4 class should be found."