1 /* Test harness for pipe-filter-gi.
3 Copyright (C) 2009 Free Software Foundation, Inc.
4 Written by Paolo Bonzini <bonzini@gnu.org>, 2009.
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "pipe-filter.h"
29 #include "full-write.h"
32 #define ASSERT(expr) \
37 fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
51 static char static_buf[5];
54 prepare_read (size_t *num_bytes_p, void *private_data)
56 *num_bytes_p = sizeof (static_buf);
60 /* Callback that ignores the data that has been read. */
63 ignore_done_read (void *data_read, size_t num_bytes_read, void *private_data)
67 /* Callback that outputs the data that has been read. */
70 output_done_read (void *data_read, size_t num_bytes_read, void *private_data)
72 full_write (STDOUT_FILENO, data_read, num_bytes_read);
76 pipe_filter_gi_write_string (struct pipe_filter_gi *f, const char *string)
78 pipe_filter_gi_write (f, string, strlen (string));
82 main (int argc, char **argv)
84 struct pipe_filter_gi *f;
85 const char *path[] = { NULL, NULL };
87 set_program_name (argv[0]);
91 /* Test writing to a nonexistent program traps sooner or later. */
95 path[0] = "/nonexistent/blah";
96 f = pipe_filter_gi_create ("pipe-filter-test", path[0], path, true, false,
97 prepare_read, ignore_done_read, NULL);
99 rc = pipe_filter_gi_write (f, "", 1);
100 ASSERT (rc == 127 || rc == -1);
101 rc = pipe_filter_gi_close (f);
102 ASSERT (rc == 127 || rc == -1);
103 printf ("Test 1 passed.\n");
107 /* Test returning the exit status. */
110 f = pipe_filter_gi_create ("pipe-filter-test", path[0], path, false, false,
111 prepare_read, ignore_done_read, NULL);
112 pipe_filter_gi_write_string (f, "1 -1");
113 ASSERT (pipe_filter_gi_close (f) == 1);
114 printf ("Test 2 passed.\n");
118 /* Same, but test returning the status in pipe_filter_gi_write. */
123 f = pipe_filter_gi_create ("pipe-filter-test", path[0], path, false, false,
124 prepare_read, ignore_done_read, NULL);
125 pipe_filter_gi_write_string (f, "1 -1\n"); /* tell the child to terminate */
126 small_nap (); /* let the child terminate */
127 rc = pipe_filter_gi_write (f, " ", 1); /* write to a closed pipe */
128 ASSERT (rc == -1 && errno == EPIPE);
129 /* Closing the filter must report same error again, for consistency with
130 pipe_filter_ii_execute. The subprocess' exit status is not returned. */
131 rc = pipe_filter_gi_close (f);
132 ASSERT (rc == -1 && errno == EPIPE);
133 printf ("Test 3 passed.\n");
137 /* Now test asynchronous I/O. */
140 f = pipe_filter_gi_create ("pipe-filter-test", path[0], path, false, true,
141 prepare_read, output_done_read, NULL);
142 pipe_filter_gi_write_string (f, "1 50\n");
143 pipe_filter_gi_write_string (f, "51\n");
144 pipe_filter_gi_write_string (f, "100");
145 ASSERT (pipe_filter_gi_close (f) == 0);
146 printf ("Test 4 passed.\n");