;;; test/buttercup.el --- Run buttercup tests  -*- lexical-binding: t; -*-

;;; Commentary:
;;
;; Command to run buttercup tests,
;;
;;   $ eask buttercup
;;

;;; Code:

(let ((dir (file-name-directory (nth 1 (member "-scriptload" command-line-args)))))
  (load (expand-file-name "_prepare.el"
                          (locate-dominating-file dir "_prepare.el"))
        nil t))

(eask-start
  ;; Preparation
  (eask-archive-install-packages '("gnu" "melpa")
                                 'buttercup)

  ;; Start Testing
  (require 'buttercup)
  ;; Propose fix from https://github.com/jorgenschaefer/emacs-buttercup/pull/217
  (let* ((load-path (cons "." load-path))
         ;; this does not include options
         (args (eask-args)))
    ;; `buttercup-run-discover' uses `command-line-args-left' not `command-line-args'
    (setq command-line-args-left args)
    ;; Seems like `buttercup-run-discover' only works on directories that are
    ;; children of the current directory. When given a parent directory it
    ;; always fails with "No suites found", even if there are tests.
    ;; Since this is a bit confusing, we warn the user specifically;
    ;; see discussion https://github.com/emacs-eask/cli/pull/281.
    (when-let* ((bad-arg (seq-find (lambda (x)
                                     (not (file-in-directory-p x default-directory)))
                                   args)))
      (error "Buttercup cannot run in parent directory: %s" bad-arg))
    (buttercup-run-discover)))

;;; test/buttercup.el ends here