tests/run-program.impure.lisp

   1 ;;;; various RUN-PROGRAM tests with side effects
   2
   3 ;;;; This software is part of the SBCL system. See the README file for
   4 ;;;; more information.
   5 ;;;;
   6 ;;;; While most of SBCL is derived from the CMU CL system, the test
   7 ;;;; files (like this one) were written from scratch after the fork
   8 ;;;; from CMU CL.
   9 ;;;;
  10 ;;;; This software is in the public domain and is provided with
  11 ;;;; absolutely no warranty. See the COPYING and CREDITS files for
  12 ;;;; more information.
  13
  14 (cl:in-package :cl-user)
  15
  16 ;; In addition to definitions lower down the impurity we're avoiding
  17 ;; is the sigchld handler that RUN-PROGRAM sets up, which interfers
  18 ;; with the manual unix process control done by the test framework
  19 ;; (sometimes the handler will manage to WAIT3 a process before
  20 ;; run-tests WAITPIDs it).
  21
  22 (with-test (:name :run-program-cat-1 :skipped-on :win32)
  23   (let* ((process (sb-ext:run-program "/bin/cat" '() :wait nil
  24                                       :output :stream :input :stream))
  25          (out (process-input process))
  26          (in (process-output process)))
  27     (unwind-protect
  28          (loop for i from 0 to 255 do
  29               (write-byte i out)
  30               (force-output out)
  31               (assert (= (read-byte in) i)))
  32       (process-close process))))
  33
  34 (with-test (:name :run-program-cat-2 :skipped-on '(or (not :sb-thread) :win32))
  35   ;; Tests that reading from a FIFO is interruptible.
  36   (let* ((process (sb-ext:run-program "/bin/cat" '()
  37                                       :wait nil
  38                                       :output :stream :input :stream))
  39          (in (process-input process))
  40          (out (process-output process))
  41          (sem (sb-thread:make-semaphore))
  42          (state :init)
  43          (writer (sb-thread:make-thread (lambda ()
  44                                           (sb-thread:wait-on-semaphore sem)
  45                                           (setf state :sleep)
  46                                           (sleep 2)
  47                                           (setf state :write)
  48                                           (write-line "OK" in)
  49                                           (finish-output in))))
  50          (timeout nil)
  51          (got nil)
  52          (unwind nil))
  53     (sb-thread:signal-semaphore sem)
  54     (handler-case
  55         (with-timeout 0.1
  56           (unwind-protect
  57                (setf got (read-line out))
  58             (setf unwind state)))
  59       (timeout ()
  60         (setf timeout t)))
  61     (assert (not got))
  62     (assert timeout)
  63     (assert (eq unwind :sleep))
  64     (sb-thread:join-thread writer)
  65     (assert (equal "OK" (read-line out)))))
  66
  67 (defclass buffer-stream (sb-gray:fundamental-binary-input-stream sb-gray:fundamental-binary-output-stream)
  68   ((buffer :initform (make-array 128
  69                                 :element-type '(unsigned-byte 8)
  70                                 :adjustable t
  71                                 :fill-pointer 0))
  72    (mark :initform 0)))
  73
  74 (defmethod stream-element-type ((stream buffer-stream))
  75   '(unsigned-byte 8))
  76
  77 (defmethod sb-gray:stream-read-sequence ((stream buffer-stream) seq &optional (start 0) end)
  78   (let* ((buffer (slot-value stream 'buffer))
  79          (end (or end (length seq)))
  80          (mark (slot-value stream 'mark))
  81          (fill-pointer (fill-pointer buffer))
  82          (new-mark (+ mark (min fill-pointer (- end start)))))
  83     (setf (slot-value stream 'mark) new-mark)
  84     (replace seq buffer
  85              :start1 start :end1 end
  86              :start2 mark :end2 fill-pointer)
  87     (min end (+ start (- fill-pointer mark)))))
  88
  89 (defmethod sb-gray:stream-write-sequence ((stream buffer-stream) seq &optional (start 0) end)
  90   (let* ((buffer (slot-value stream 'buffer))
  91          (end (or end (length seq)))
  92          (fill-pointer (fill-pointer buffer))
  93          (new-fill (min (array-total-size buffer) (+ fill-pointer (- end start)))))
  94     (setf (fill-pointer buffer) new-fill)
  95     (replace buffer seq
  96              :start1 fill-pointer
  97              :start2 start :end2 end)
  98     seq))
  99
 100 (with-test (:name :run-program-cat-3 :skipped-on :win32)
 101   ;; User-defined binary input and output streams.
 102   (let ((in (make-instance 'buffer-stream))
 103         (out (make-instance 'buffer-stream))
 104         (data #(0 1 2 3 4 5 6 7 8 9 10 11 12)))
 105     (write-sequence data in)
 106     (let ((process (sb-ext:run-program "/bin/cat" '() :wait t :output out :input in))
 107           (buf (make-array (length data))))
 108       (assert (= 13 (read-sequence buf out)))
 109       (assert (= 0 (read-sequence (make-array 8) out)))
 110       (assert (equalp buf data)))))
 111
 112 (with-test (:name :run-program-cat-4 :skipped-on :win32)
 113   ;; Null broadcast stream as output
 114   (let* ((process (sb-ext:run-program "/bin/cat" '() :wait nil
 115                                       :output (make-broadcast-stream)
 116                                       :input :stream))
 117          (in (process-input process)))
 118     (unwind-protect
 119          (progn
 120            (write-string "foobar" in)
 121            (close in)
 122            (process-wait process))
 123       (process-close process))))
 124
 125 ;;; Test driving an external program (cat) through pipes wrapped in
 126 ;;; composite streams.
 127
 128 (require :sb-posix)
 129
 130 #-win32
 131 (progn
 132   (defun make-pipe ()
 133     (multiple-value-bind (in out) (sb-posix:pipe)
 134       (let ((input (sb-sys:make-fd-stream in
 135                                           :input t
 136                                           :external-format :ascii
 137                                           :buffering :none :name "in"))
 138             (output (sb-sys:make-fd-stream out
 139                                            :output t
 140                                            :external-format :ascii
 141                                            :buffering :none :name "out")))
 142         (make-two-way-stream input output))))
 143
 144   (defparameter *cat-in-pipe* (make-pipe))
 145   (defparameter *cat-in* (make-synonym-stream '*cat-in-pipe*))
 146   (defparameter *cat-out-pipe* (make-pipe))
 147   (defparameter *cat-out* (make-synonym-stream '*cat-out-pipe*)))
 148
 149 (with-test (:name :run-program-cat-5 :fails-on :win32)
 150   (let ((cat (run-program "/bin/cat" nil :input *cat-in* :output *cat-out*
 151                           :wait nil)))
 152     (dolist (test '("This is a test!"
 153                     "This is another test!"
 154                     "This is the last test...."))
 155       (write-line test *cat-in*)
 156       (assert (equal test (read-line *cat-out*))))
 157     (process-close cat)))
 158
 159 ;;; The above test used to use ed, but there were buffering issues: on some platforms
 160 ;;; buffering of stdin and stdout depends on their TTYness, and ed isn't sufficiently
 161 ;;; agressive about flushing them. So, here's another test using :PTY.
 162
 163 #-win32 (progn ;; kludge: It would be nicer to disable individual test cases,
 164                ;; but we are not using WITH-TEST yet here.
 165
 166 (defparameter *tmpfile* "run-program-ed-test.tmp")
 167
 168 (with-open-file (f *tmpfile*
 169                    :direction :output
 170                    :if-exists :supersede)
 171   (write-line "bar" f))
 172
 173 (defparameter *ed*
 174   (run-program "/bin/ed" (list *tmpfile*) :wait nil :pty t))
 175
 176 (defparameter *ed-pipe* (make-two-way-stream (process-pty *ed*) (process-pty *ed*)))
 177 (defparameter *ed-in* (make-synonym-stream '*ed-pipe*))
 178 (defparameter *ed-out* (make-synonym-stream '*ed-pipe*))
 179
 180 (defun read-linish (stream)
 181   (with-output-to-string (s)
 182     (loop for c = (read-char stream)
 183           while (and c (not (eq #\newline c)))
 184              ;; Some eds like to send \r\n
 185           do (unless (eq #\return c)
 186                (write-char c s)))))
 187
 188 (defun assert-ed (command response)
 189   (when command
 190     (write-line command *ed-in*)
 191     (force-output *ed-in*))
 192   (when response
 193     (let ((got (read-linish *ed-out*)))
 194       (unless (equal response got)
 195         (error "wanted '~A' from ed, got '~A'" response got))))
 196   *ed*)
 197
 198 (unwind-protect
 199      (with-test (:name :run-program-ed)
 200        (assert-ed nil "4")
 201        (assert-ed ".s/bar/baz/g" nil)
 202        (assert-ed "w" "4")
 203        (assert-ed "q" nil)
 204        (process-wait *ed*)
 205        (with-open-file (f *tmpfile*)
 206          (assert (equal "baz" (read-line f)))))
 207   (delete-file *tmpfile*))
 208
 209 ) ;; #-win32
 210
 211 ;; Around 1.0.12 there was a regression when :INPUT or :OUTPUT was a
 212 ;; pathname designator.  Since these use the same code, it should
 213 ;; suffice to test just :INPUT.
 214 (let ((file))
 215   (unwind-protect
 216        (progn (with-open-file (f "run-program-test.tmp" :direction :output)
 217                 (setf file (truename f))
 218                 (write-line "Foo" f))
 219                   (assert (run-program "cat" ()
 220                                        :input file :output t
 221                                        :search t :wait t)))
 222     (when file
 223       (delete-file file))))
 224
 225 ;;; This used to crash on Darwin and trigger recursive lock errors on
 226 ;;; every platform.
 227 (with-test (:name (:run-program :stress) :fails-on :win32)
 228   ;; Do it a hundred times in batches of 10 so that with a low limit
 229   ;; of the number of processes the test can have a chance to pass.
 230   (loop
 231    repeat 10 do
 232    (map nil
 233         #'sb-ext:process-wait
 234         (loop repeat 10
 235               collect
 236               (sb-ext:run-program "/bin/echo" '
 237                                   ("It would be nice if this didn't crash.")
 238                                   :wait nil :output nil)))))
 239
 240 (with-test (:name (:run-program :pty-stream) :fails-on :win32)
 241   (assert (equal "OK"
 242                  (subseq
 243                   (with-output-to-string (s)
 244                     (assert (= 42 (process-exit-code
 245                                    (run-program "/bin/sh" '("-c" "echo OK; exit 42") :wait t
 246                                                 :pty s))))
 247                     s)
 248                   0
 249                   2))))
 250
 251 ;; Check whether RUN-PROGRAM puts its child process into the foreground
 252 ;; when stdin is inherited. If it fails to do so we will receive a SIGTTIN.
 253 ;;
 254 ;; We can't check for the signal itself since run-program.c resets the
 255 ;; forked process' signal mask to defaults. But the default is `stop'
 256 ;; of which we can be notified asynchronously by providing a status hook.
 257 (with-test (:name (:run-program :inherit-stdin) :fails-on :win32)
 258   (let (stopped)
 259     (flet ((status-hook (proc)
 260              (case (sb-ext:process-status proc)
 261                (:stopped (setf stopped t)))))
 262       (let ((proc (sb-ext:run-program "/bin/ed" nil :search nil :wait nil
 263                                       :input t :output t
 264                                       :status-hook #'status-hook)))
 265         ;; Give the program a generous time to generate the SIGTTIN.
 266         ;; If it hasn't done so after that time we can consider it
 267         ;; to be working (i.e. waiting for input without generating SIGTTIN).
 268         (sleep 0.5)
 269         ;; either way we have to signal it to terminate
 270         (process-kill proc sb-posix:sigterm)
 271         (process-close proc)
 272         (assert (not stopped))))))
 273
 274
 275 ;; Check that in when you do run-program with :wait t that causes
 276 ;; encoding error, it does not affect the following run-program
 277 (with-test (:name (:run-program :clean-exit-after-encoding-error)
 278                   :fails-on :win32)
 279   (let ((had-error-p nil))
 280     (flet ((barf (&optional (format :default))
 281              (with-output-to-string (stream)
 282                (run-program #-netbsd "/usr/bin/perl" #+netbsd "/usr/pkg/bin/perl"
 283                             '("-e" "print \"\\x20\\xfe\\xff\\x0a\"")
 284                             :output stream
 285                             :external-format format)))
 286            (no-barf ()
 287              (with-output-to-string (stream)
 288                (run-program "/bin/echo"
 289                             '("This is a test")
 290                             :output stream))))
 291       (handler-case
 292           (barf :utf-8)
 293         (error ()
 294           (setq had-error-p t)))
 295       (assert had-error-p)
 296       ;; now run the harmless program
 297       (setq had-error-p nil)
 298       (handler-case
 299           (no-barf)
 300         (error ()
 301           (setq had-error-p t)))
 302       (assert (not had-error-p)))))
 303
 304 (with-test (:name (:run-program :no-such-thing))
 305   (assert (search "Couldn't execute"
 306                   (handler-case
 307                       (progn (run-program "no-such-program-we-hope" '()) nil)
 308                     (error (e)
 309                       (princ-to-string e))))))
 310
 311 (with-test (:name (:run-program :not-executable))
 312   (assert (search "Couldn't execute"
 313                   (handler-case
 314                       (progn (run-program "run-program.impure.lisp" '()) nil)
 315                     (error (e)
 316                       (princ-to-string e))))))
 317
 318 #-win32
 319 (with-test (:name (:run-program :if-input-does-not-exist))
 320   (let ((file (pathname (sb-posix:mktemp "rpXXXXXX"))))
 321     (assert (null (sb-ext:run-program "/bin/cat" '() :input file)))
 322     (assert (null (sb-ext:run-program "/bin/cat" '() :output #.(or *compile-file-truename*
 323                                                                    *load-truename*)
 324                                       :if-output-exists nil)))))
 325
 326
 327 (with-test (:name (:run-program :set-directory))
 328   (let* ((directory #-win32 "/"
 329                     #+win32 "c:\\")
 330          (out (sb-ext:process-output
 331                (sb-ext:run-program #-win32 "/bin/sh"
 332                                    #-win32 '("-c" "pwd")
 333                                    #+win32 "cmd.exe"
 334                                    #+win32 '("/c" "cd")
 335                                    :output :stream
 336                                    :directory directory
 337                                    :search t))))
 338     (assert
 339      (equal directory
 340             (string-right-trim '(#\Return) (read-line out))))))