1 ;;;; popen.test --- exercise ice-9/popen.scm -*- scheme -*-
3 ;;;; Copyright 2003, 2006, 2010, 2011, 2013, 2014 Free Software Foundation, Inc.
5 ;;;; This library is free software; you can redistribute it and/or
6 ;;;; modify it under the terms of the GNU Lesser General Public
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8 ;;;; version 3 of the License, or (at your option) any later version.
10 ;;;; This library is distributed in the hope that it will be useful,
11 ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
12 ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 ;;;; Lesser General Public License for more details.
15 ;;;; You should have received a copy of the GNU Lesser General Public
16 ;;;; License along with this library; if not, write to the Free Software
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19 (define-module (test-suite test-ice-9-popen)
20 #:use-module (test-suite lib))
22 ;; read from PORT until eof is reached, return what's read as a string
23 (define (read-string-to-eof port)
24 (do ((lst '() (cons c lst))
25 (c (read-char port) (read-char port)))
27 (list->string (reverse! lst)))))
29 ;; call (THUNK), with SIGPIPE set to SIG_IGN so that an EPIPE error is
30 ;; generated rather than a SIGPIPE signal
31 (define (with-epipe thunk)
34 (sigaction SIGPIPE SIG_IGN))
38 (define-syntax-rule (if-supported body ...)
43 (use-modules (ice-9 popen))
50 (with-test-prefix "open-input-pipe"
52 (pass-if-exception "no args" exception:wrong-num-args
56 (port? (open-input-pipe "echo hello")))
59 (string=? "hello\n" (read-string-to-eof (open-input-pipe "echo hello"))))
61 ;; exercise file descriptor setups when stdin is the same as stderr
62 (pass-if "stdin==stderr"
63 (let ((port (open-file "/dev/null" "r+")))
64 (with-input-from-port port
66 (with-error-to-port port
68 (open-input-pipe "echo hello"))))))
71 ;; exercise file descriptor setups when stdout is the same as stderr
72 (pass-if "stdout==stderr"
73 (let ((port (open-file "/dev/null" "r+")))
74 (with-output-to-port port
76 (with-error-to-port port
78 (open-input-pipe "echo hello"))))))
81 (pass-if "open-input-pipe process gets (current-input-port) as stdin"
83 (port (with-input-from-port (car p2c)
85 (open-input-pipe "read line && echo $line")))))
86 (display "hello\n" (cdr p2c))
87 (force-output (cdr p2c))
88 (let ((result (eq? (read port) 'hello)))
89 (close-port (cdr p2c))
93 ;; After the child closes stdout (which it indicates here by writing
94 ;; "closed" to stderr), the parent should see eof. In Guile 1.6.4
95 ;; and earlier a duplicate of stdout existed in the child, meaning
98 ;; Note that the objective here is to test that the parent sees EOF
99 ;; while the child is still alive. (It is obvious that the parent
100 ;; must see EOF once the child has died.) The use of the `p2c'
101 ;; pipe, and `echo closed' and `read' in the child, allows us to be
102 ;; sure that we are testing what the parent sees at a point where
103 ;; the child has closed stdout but is still alive.
104 (pass-if "no duplicate"
107 (port (with-error-to-port (cdr c2p)
109 (with-input-from-port (car p2c)
112 (format #f "exec 1>~a; echo closed 1>&2; \
113 exec 2>~a; read REPLY"
114 %null-device %null-device))))))))
115 (close-port (cdr c2p)) ;; write side
116 (let ((result (eof-object? (read-char port))))
117 (display "hello!\n" (cdr p2c))
118 (force-output (cdr p2c))
126 (with-test-prefix "open-output-pipe"
128 (pass-if-exception "no args" exception:wrong-num-args
132 (port? (open-output-pipe "exit 0")))
134 ;; exercise file descriptor setups when stdin is the same as stderr
135 (pass-if "stdin==stderr"
136 (let ((port (open-file "/dev/null" "r+")))
137 (with-input-from-port port
139 (with-error-to-port port
141 (open-output-pipe "exit 0"))))))
144 ;; exercise file descriptor setups when stdout is the same as stderr
145 (pass-if "stdout==stderr"
146 (let ((port (open-file "/dev/null" "r+")))
147 (with-output-to-port port
149 (with-error-to-port port
151 (open-output-pipe "exit 0"))))))
154 ;; After the child closes stdin (which it indicates here by writing
155 ;; "closed" to stderr), the parent should see a broken pipe. We
156 ;; setup to see this as EPIPE (rather than SIGPIPE). In Guile 1.6.4
157 ;; and earlier a duplicate of stdin existed in the child, preventing
158 ;; the broken pipe occurring.
160 ;; Note that the objective here is to test that the parent sees a
161 ;; broken pipe while the child is still alive. (It is obvious that
162 ;; the parent will see a broken pipe once the child has died.) The
163 ;; use of the `c2p' pipe, and the repeated `echo closed' in the
164 ;; child, allows us to be sure that we are testing what the parent
165 ;; sees at a point where the child has closed stdin but is still
168 ;; Note that `with-epipe' must apply only to the parent and not to
169 ;; the child process; we rely on the child getting SIGPIPE, to
170 ;; terminate it (and avoid leaving a zombie).
171 (pass-if "no duplicate"
173 (port (with-error-to-port (cdr c2p)
176 (string-append "exec guile --no-auto-compile -s \""
177 (getenv "TEST_SUITE_DIR")
178 "/tests/popen-child.scm\""))))))
179 (close-port (cdr c2p)) ;; write side
183 (and (char? (read-char (car c2p))) ;; wait for child to do its thing
186 (write-char #\x port)
189 (lambda (key name fmt args errno-list)
190 (= (car errno-list) EPIPE))))))
191 ;; Now close our reading end of the pipe. This should give
192 ;; the child a broken pipe and so allow it to exit.
193 (close-port (car c2p))
201 (with-test-prefix "close-pipe"
203 (pass-if-exception "no args" exception:wrong-num-args
207 (let ((st (close-pipe (open-output-pipe "exit 0"))))
208 (and (status:exit-val st)
209 (= 0 (status:exit-val st)))))
212 (let ((st (close-pipe (open-output-pipe "exit 1"))))
213 (and (status:exit-val st)
214 (= 1 (status:exit-val st)))))))