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97 lines
3.4 KiB
EmacsLisp
97 lines
3.4 KiB
EmacsLisp
;;; thread-tests.el --- Test suite for thread.el -*- lexical-binding: t; -*-
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;; Copyright (C) 2018-2021 Free Software Foundation, Inc.
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;; Author: Gemini Lasswell <gazally@runbox.com>
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;; Keywords: threads
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;; Code:
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(require 'ert)
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(require 'thread)
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;; Declare the functions used here in case Emacs has been configured
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;; --without-threads.
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(declare-function make-mutex "thread.c" (&optional name))
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(declare-function mutex-lock "thread.c" (mutex))
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(declare-function mutex-unlock "thread.c" (mutex))
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(declare-function make-thread "thread.c" (function &optional name))
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(declare-function thread-join "thread.c" (thread))
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(declare-function thread-yield "thread.c" ())
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(defvar thread-tests-flag)
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(defvar thread-tests-mutex (when (featurep 'threads) (make-mutex "mutex1")))
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(defun thread-tests--thread-function ()
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(setq thread-tests-flag t)
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(with-mutex thread-tests-mutex
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(sleep-for 0.01)))
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(ert-deftest thread-tests-thread-list-send-error ()
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"A thread can be sent an error signal from the *Thread List* buffer."
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(skip-unless (featurep 'threads))
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(cl-letf (((symbol-function 'y-or-n-p) (lambda (_prompt) t)))
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(with-mutex thread-tests-mutex
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(setq thread-tests-flag nil)
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(let ((thread (make-thread #'thread-tests--thread-function
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"thread-tests-wait")))
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(while (not thread-tests-flag)
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(thread-yield))
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(list-threads)
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(goto-char (point-min))
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(re-search-forward
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"^thread-tests.+[[:blank:]]+Blocked[[:blank:]]+.+mutex1.+?")
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(thread-list-send-error-signal)
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(should-error (thread-join thread))
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(list-threads)
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(goto-char (point-min))
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(should-error (re-search-forward "thread-tests"))))))
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(ert-deftest thread-tests-thread-list-show-backtrace ()
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"Show a backtrace for another thread from the *Thread List* buffer."
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(skip-unless (featurep 'threads))
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(let (thread)
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(with-mutex thread-tests-mutex
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(setq thread-tests-flag nil)
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(setq thread
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(make-thread #'thread-tests--thread-function "thread-tests-back"))
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(while (not thread-tests-flag)
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(thread-yield))
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(list-threads)
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(goto-char (point-min))
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(re-search-forward
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"^thread-tests.+[[:blank:]]+Blocked[[:blank:]]+.+mutex1.+?")
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(thread-list-pop-to-backtrace)
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(goto-char (point-min))
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(re-search-forward "thread-tests-back")
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(re-search-forward "mutex-lock")
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(re-search-forward "thread-tests--thread-function"))
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(thread-join thread)))
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(ert-deftest thread-tests-list-threads-error-when-not-configured ()
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"Signal an error running `list-threads' if threads are not configured."
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(skip-unless (not (featurep 'threads)))
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(should-error (list-threads)))
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(provide 'thread-tests)
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;;; thread-tests.el ends here
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