1/* Verify capture output from a subprocess.
2 Copyright (C) 2017-2018 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C 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.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#include <stdbool.h>
20#include <stdio.h>
21#include <support/capture_subprocess.h>
22#include <support/check.h>
23
24static void
25print_context (const char *context, bool *failed)
26{
27 if (*failed)
28 /* Do not duplicate message. */
29 return;
30 support_record_failure ();
31 printf ("error: subprocess failed: %s\n", context);
32}
33
34void
35support_capture_subprocess_check (struct support_capture_subprocess *proc,
36 const char *context, int status,
37 int allowed)
38{
39 TEST_VERIFY ((allowed & sc_allow_none)
40 || (allowed & sc_allow_stdout)
41 || (allowed & sc_allow_stderr));
42 TEST_VERIFY (!((allowed & sc_allow_none)
43 && ((allowed & sc_allow_stdout)
44 || (allowed & sc_allow_stderr))));
45
46 bool failed = false;
47 if (proc->status != status)
48 {
49 print_context (context, &failed);
50 printf ("error: expected exit status: %d\n", status);
51 printf ("error: actual exit status: %d\n", proc->status);
52 }
53 if (!(allowed & sc_allow_stdout) && proc->out.length != 0)
54 {
55 print_context (context, &failed);
56 printf ("error: unexpected output from subprocess\n");
57 fwrite (proc->out.buffer, proc->out.length, 1, stdout);
58 puts ("\n");
59 }
60 if (!(allowed & sc_allow_stderr) && proc->err.length != 0)
61 {
62 print_context (context, &failed);
63 printf ("error: unexpected error output from subprocess\n");
64 fwrite (proc->err.buffer, proc->err.length, 1, stdout);
65 puts ("\n");
66 }
67}
68