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Add support for multisession variables

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* doc/lispref/elisp.texi (Top): Add to menu.
(Top):
* doc/lispref/variables.texi (Variables): Ditto.
(Multisession Variables): Document multisession variables.

* lisp/emacs-lisp/multisession.el: New file.
This commit is contained in:
Lars Ingebrigtsen 2021-12-16 07:19:58 +01:00
parent 1c6363ff4b
commit bfc38ff058
5 changed files with 778 additions and 0 deletions
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201
test/lisp/emacs-lisp/multisession-tests.el Normal file
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;;; multisession-tests.el --- Tests for multisession.el -*- lexical-binding: t; -*-
;; Copyright (C) 2021 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/>.
;;; Commentary:
;;; Code:
(require 'multisession)
(require 'ert)
(require 'ert-x)
(require 'cl-lib)
(ert-deftest multi-test-sqlite-simple ()
(skip-unless (sqlite-available-p))
(ert-with-temp-file dir
:directory t
(let ((user-init-file "/tmp/foo.el")
(multisession-storage 'sqlite)
(multisession-directory dir))
(unwind-protect
(progn
(define-multisession-variable foo 0
""
:synchronized t)
(should (= (multisession-value foo) 0))
(cl-incf (multisession-value foo))
(should (= (multisession-value foo) 1))
(call-process
(concat invocation-directory invocation-name)
nil t nil
"-Q" "-batch"
"--eval" (prin1-to-string
`(progn
(require 'multisession)
(let ((multisession-directory ,dir)
(multisession-storage 'sqlite)
(user-init-file "/tmp/foo.el"))
(define-multisession-variable foo 0
""
:synchronized t)
(cl-incf (multisession-value foo))))))
(should (= (multisession-value foo) 2)))
(sqlite-close multisession--db)
(setq multisession--db nil)))))
(ert-deftest multi-test-sqlite-busy ()
(skip-unless (and t (sqlite-available-p)))
(ert-with-temp-file dir
:directory t
(let ((user-init-file "/tmp/foo.el")
(multisession-directory dir)
(multisession-storage 'sqlite)
proc)
(unwind-protect
(progn
(define-multisession-variable bar 0
""
:synchronized t)
(should (= (multisession-value bar) 0))
(cl-incf (multisession-value bar))
(should (= (multisession-value bar) 1))
(setq proc
(start-process
"other-emacs"
nil
(concat invocation-directory invocation-name)
"-Q" "-batch"
"--eval" (prin1-to-string
`(progn
(require 'multisession)
(let ((multisession-directory ,dir)
(multisession-storage 'sqlite)
(user-init-file "/tmp/bar.el"))
(define-multisession-variable bar 0
"" :synchronized t)
(dotimes (i 100)
(cl-incf (multisession-value bar))))))))
(while (process-live-p proc)
(ignore-error 'sqlite-locked-error
(message "bar %s" (multisession-value bar))
;;(cl-incf (multisession-value bar))
)
(sleep-for 0.1))
(message "bar ends up as %s" (multisession-value bar))
(should (< (multisession-value bar) 1003)))
(sqlite-close multisession--db)
(setq multisession--db nil)))))
(ert-deftest multi-test-files-simple ()
(ert-with-temp-file dir
:directory t
(let ((user-init-file "/tmp/sfoo.el")
(multisession-storage 'files)
(multisession-directory dir))
(define-multisession-variable sfoo 0
""
:synchronized t)
(should (= (multisession-value sfoo) 0))
(cl-incf (multisession-value sfoo))
(should (= (multisession-value sfoo) 1))
(call-process
(concat invocation-directory invocation-name)
nil t nil
"-Q" "-batch"
"--eval" (prin1-to-string
`(progn
(require 'multisession)
(let ((multisession-directory ,dir)
(multisession-storage 'files)
(user-init-file "/tmp/sfoo.el"))
(define-multisession-variable sfoo 0
""
:synchronized t)
(cl-incf (multisession-value sfoo))))))
(should (= (multisession-value sfoo) 2)))))
(ert-deftest multi-test-files-busy ()
(skip-unless (and t (sqlite-available-p)))
(ert-with-temp-file dir
:directory t
(let ((user-init-file "/tmp/foo.el")
(multisession-storage 'files)
(multisession-directory dir)
proc)
(define-multisession-variable sbar 0
""
:synchronized t)
(should (= (multisession-value sbar) 0))
(cl-incf (multisession-value sbar))
(should (= (multisession-value sbar) 1))
(setq proc
(start-process
"other-emacs"
nil
(concat invocation-directory invocation-name)
"-Q" "-batch"
"--eval" (prin1-to-string
`(progn
(require 'multisession)
(let ((multisession-directory ,dir)
(multisession-storage 'files)
(user-init-file "/tmp/sbar.el"))
(define-multisession-variable sbar 0
"" :synchronized t)
(dotimes (i 1000)
(cl-incf (multisession-value sbar))))))))
(while (process-live-p proc)
(message "sbar %s" (multisession-value sbar))
;;(cl-incf (multisession-value sbar))
(sleep-for 0.1))
(message "sbar ends up as %s" (multisession-value sbar))
(should (< (multisession-value sbar) 2000)))))
(ert-deftest multi-test-files-some-values ()
(ert-with-temp-file dir
:directory t
(let ((user-init-file "/tmp/sfoo.el")
(multisession-storage 'files)
(multisession-directory dir))
(define-multisession-variable foo1 nil)
(should (eq (multisession-value foo1) nil))
(setf (multisession-value foo1) nil)
(should (eq (multisession-value foo1) nil))
(setf (multisession-value foo1) t)
(should (eq (multisession-value foo1) t))
(define-multisession-variable foo2 t)
(setf (multisession-value foo2) nil)
(should (eq (multisession-value foo2) nil))
(setf (multisession-value foo2) t)
(should (eq (multisession-value foo2) t))
(define-multisession-variable foo3 t)
(should-error (setf (multisession-value foo3) (make-marker)))
(let ((string (with-temp-buffer
(set-buffer-multibyte nil)
(insert 0 1 2)
(buffer-string))))
(should-not (multibyte-string-p string))
(define-multisession-variable foo4 nil)
(setf (multisession-value foo4) string)
(should (equal (multisession-value foo4) string))))))
;;; multisession-tests.el ends here