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;;; process-tests.el --- Testing the process facilities
;; Copyright (C) 2013-2019 Free Software Foundation, Inc.
;; This program 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.
;; This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;;
;;; Code:
(require 'ert)
;; Timeout in seconds; the test fails if the timeout is reached.
(defvar process-test-sentinel-wait-timeout 2.0)
;; Start a process that exits immediately. Call WAIT-FUNCTION,
;; possibly multiple times, to wait for the process to complete.
(defun process-test-sentinel-wait-function-working-p (wait-function)
(let ((proc (start-process "test" nil "bash" "-c" "exit 20"))
(sentinel-called nil)
(start-time (float-time)))
(set-process-sentinel proc (lambda (proc msg)
(setq sentinel-called t)))
(while (not (or sentinel-called
(> (- (float-time) start-time)
process-test-sentinel-wait-timeout)))
(funcall wait-function))
(cl-assert (eq (process-status proc) 'exit))
(cl-assert (= (process-exit-status proc) 20))
sentinel-called))
(ert-deftest process-test-sentinel-accept-process-output ()
(skip-unless (executable-find "bash"))
(should (process-test-sentinel-wait-function-working-p
#'accept-process-output)))
(ert-deftest process-test-sentinel-sit-for ()
(skip-unless (executable-find "bash"))
(should
(process-test-sentinel-wait-function-working-p (lambda () (sit-for 0.01 t)))))
(when (eq system-type 'windows-nt)
(ert-deftest process-test-quoted-batfile ()
"Check that Emacs hides CreateProcess deficiency (bug#18745)."
(let (batfile)
(unwind-protect
(progn
;; CreateProcess will fail when both the bat file and 1st
;; argument are quoted, so include spaces in both of those
;; to force quoting.
(setq batfile (make-temp-file "echo args" nil ".bat"))
(with-temp-file batfile
(insert "@echo arg1=%1, arg2=%2\n"))
(with-temp-buffer
(call-process batfile nil '(t t) t "x &y")
(should (string= (buffer-string) "arg1=\"x &y\", arg2=\n")))
(with-temp-buffer
(call-process-shell-command
(mapconcat #'shell-quote-argument (list batfile "x &y") " ")
nil '(t t) t)
(should (string= (buffer-string) "arg1=\"x &y\", arg2=\n"))))
(when batfile (delete-file batfile))))))
(ert-deftest process-test-stderr-buffer ()
(skip-unless (executable-find "bash"))
(let* ((stdout-buffer (generate-new-buffer "*stdout*"))
(stderr-buffer (generate-new-buffer "*stderr*"))
(proc (make-process :name "test"
:command (list "bash" "-c"
(concat "echo hello stdout!; "
"echo hello stderr! >&2; "
"exit 20"))
:buffer stdout-buffer
:stderr stderr-buffer))
(sentinel-called nil)
(start-time (float-time)))
(set-process-sentinel proc (lambda (proc msg)
(setq sentinel-called t)))
(while (not (or sentinel-called
(> (- (float-time) start-time)
process-test-sentinel-wait-timeout)))
(accept-process-output))
(cl-assert (eq (process-status proc) 'exit))
(cl-assert (= (process-exit-status proc) 20))
(should (with-current-buffer stdout-buffer
(goto-char (point-min))
(looking-at "hello stdout!")))
(should (with-current-buffer stderr-buffer
(goto-char (point-min))
(looking-at "hello stderr!")))))
(ert-deftest process-test-stderr-filter ()
(skip-unless (executable-find "bash"))
(let* ((sentinel-called nil)
(stderr-sentinel-called nil)
(stdout-output nil)
(stderr-output nil)
(stdout-buffer (generate-new-buffer "*stdout*"))
(stderr-buffer (generate-new-buffer "*stderr*"))
(stderr-proc (make-pipe-process :name "stderr"
:buffer stderr-buffer))
(proc (make-process :name "test" :buffer stdout-buffer
:command (list "bash" "-c"
(concat "echo hello stdout!; "
"echo hello stderr! >&2; "
"exit 20"))
:stderr stderr-proc))
(start-time (float-time)))
(set-process-filter proc (lambda (proc input)
(push input stdout-output)))
(set-process-sentinel proc (lambda (proc msg)
(setq sentinel-called t)))
(set-process-filter stderr-proc (lambda (proc input)
(push input stderr-output)))
(set-process-sentinel stderr-proc (lambda (proc input)
(setq stderr-sentinel-called t)))
(while (not (or sentinel-called
(> (- (float-time) start-time)
process-test-sentinel-wait-timeout)))
(accept-process-output))
(cl-assert (eq (process-status proc) 'exit))
(cl-assert (= (process-exit-status proc) 20))
(should sentinel-called)
(should (equal 1 (with-current-buffer stdout-buffer
(point-max))))
(should (equal "hello stdout!\n"
(mapconcat #'identity (nreverse stdout-output) "")))
(should stderr-sentinel-called)
(should (equal 1 (with-current-buffer stderr-buffer
(point-max))))
(should (equal "hello stderr!\n"
(mapconcat #'identity (nreverse stderr-output) "")))))
(ert-deftest set-process-filter-t ()
"Test setting process filter to t and back." ;; Bug#36591
(with-temp-buffer
(let* ((print-level nil)
(print-length nil)
(proc (start-process
"test proc" (current-buffer)
(concat invocation-directory invocation-name)
"-Q" "--batch" "--eval"
(prin1-to-string
'(let (s)
(while (setq s (read-from-minibuffer "$ "))
(princ s)
(princ "\n")))))))
(set-process-query-on-exit-flag proc nil)
(send-string proc "one\n")
(should
(accept-process-output proc 1)) ; Read "one".
(should (equal (buffer-string) "$ one\n$ "))
(set-process-filter proc t) ; Stop reading from proc.
(send-string proc "two\n")
(should-not
(accept-process-output proc 1)) ; Can't read "two" yet.
(should (equal (buffer-string) "$ one\n$ "))
(set-process-filter proc nil) ; Resume reading from proc.
(should
(accept-process-output proc 1)) ; Read "two" from proc.
(should (equal (buffer-string) "$ one\n$ two\n$ ")))))
(ert-deftest start-process-should-not-modify-arguments ()
"`start-process' must not modify its arguments in-place."
;; See bug#21831.
(let* ((path (pcase system-type
((or 'windows-nt 'ms-dos)
;; Make sure the file name uses forward slashes.
;; The original bug was that 'start-process' would
;; convert forward slashes to backslashes.
(expand-file-name (executable-find "attrib.exe")))
(_ "/bin//sh")))
(samepath (copy-sequence path)))
;; Make sure 'start-process' actually goes all the way and invokes
;; the program.
(should (process-live-p (condition-case nil
(start-process "" nil path)
(error nil))))
(should (equal path samepath))))
(ert-deftest make-process/noquery-stderr ()
"Checks that Bug#30031 is fixed."
(skip-unless (executable-find "sleep"))
(with-temp-buffer
(let* ((previous-processes (process-list))
(process (make-process :name "sleep"
:command '("sleep" "1h")
:noquery t
:connection-type 'pipe
:stderr (current-buffer))))
(unwind-protect
(let ((new-processes (cl-set-difference (process-list)
previous-processes
:test #'eq)))
(should new-processes)
(dolist (process new-processes)
(should-not (process-query-on-exit-flag process))))
(kill-process process)))))
(provide 'process-tests)
;; process-tests.el ends here.
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