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;;; proced-tests.el --- Test suite for proced.el -*- lexical-binding: t -*-
;; Copyright (C) 2022 Free Software Foundation, Inc.
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Code:
(require 'ert)
(require 'proced)
(require 'thingatpt)
(cl-defmacro proced--within-buffer (format filter &body body)
"Execute BODY within a proced buffer using format FORMAT and filter FILTER."
`(let ((proced-format ,format)
(proced-filter ,filter)
(proced-auto-update-flag nil)
(inhibit-message t))
(proced)
(unwind-protect
(with-current-buffer "*Proced*"
,@body)
(kill-buffer "*Proced*"))))
(defun proced--assert-emacs-pid-in-buffer ()
"Fail unless the process ID of the current Emacs process exists in buffer."
(should (string-match-p
(number-to-string (emacs-pid))
(buffer-substring-no-properties (point-min) (point-max)))))
(defun proced--move-to-column (attribute)
"Move to the column under ATTRIBUTE in the current proced buffer."
(move-to-column (string-match attribute proced-header-line)))
(ert-deftest proced-format-test ()
(dolist (format '(short medium long verbose))
(proced--within-buffer
format
'user
(proced--assert-emacs-pid-in-buffer))))
(ert-deftest proced-update-test ()
(proced--within-buffer
'short
'user
(proced-update)
(proced--assert-emacs-pid-in-buffer)))
(ert-deftest proced-revert-test ()
(proced--within-buffer
'short
'user
(proced-revert)
(proced--assert-emacs-pid-in-buffer)))
(ert-deftest proced-color-test ()
(let ((proced-enable-color-flag t))
(proced--within-buffer
'short
'user
(proced--assert-emacs-pid-in-buffer))))
(ert-deftest proced-refine-test ()
;;(skip-unless (memq system-type '(gnu/linux gnu/kfreebsd darwin)))
(proced--within-buffer
'medium
'user
;; When refining on PID for process A, a process is kept if and only
;; if its PID are the same as process A, which more or less guarentees
;; the refinement will remove some processes.
(proced--move-to-column "PID")
(let ((pid (word-at-point)))
(proced-refine)
(while (not (eobp))
(proced--move-to-column "PID")
(should (string= pid (word-at-point)))
(forward-line)))))
(ert-deftest proced-refine-with-update-test ()
(proced--within-buffer
'medium
'user
(proced--move-to-column "PID")
(let ((pid (word-at-point)))
(proced-refine)
(proced-update t)
(while (not (eobp))
(proced--move-to-column "PID")
(should (string= pid (word-at-point)))
(forward-line)))))
(ert-deftest proced-update-preserves-pid-at-point-test ()
(proced--within-buffer
'medium
'user
(goto-char (point-min))
(search-forward (number-to-string (emacs-pid)))
(proced--move-to-column "PID")
(save-window-excursion
(let ((pid (proced-pid-at-point))
(new-window (split-window))
(old-window (get-buffer-window)))
(select-window new-window)
(with-current-buffer "*Proced*"
(proced-update t t))
(select-window old-window)
(should (= pid (proced-pid-at-point)))))))
(provide 'proced-tests)
;;; proced-tests.el ends here
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