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Hook error() and error_at_line() if available.

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They are used by some GNU programs to display error messages.
This commit is contained in:
Simon Ruderich
2013-06-05 23:57:05 +02:00
parent b140cc0a82
commit 7f9856c5da
7 changed files with 156 additions and 1 deletions
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6
tests/Makefile.am
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@@ -4,8 +4,14 @@ example_SOURCES = example.c
example_exec_SOURCES = example_exec.c
example_vfork_SOURCES = example_vfork.c
if HAVE_ERROR_H
check_PROGRAMS += example_error
example_error_SOURCES = example_error.c
endif
dist_check_SCRIPTS = run.sh lib.sh
dist_check_DATA = example.expected \
example_error.expected \
example_exec.expected \
example_vfork.expected \
example-noforce.sh \

57
tests/example_error.c Normal file
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@@ -0,0 +1,57 @@
/*
* Test error() and error_at_line(). Non-standard, GNU only.
*
* Copyright (C) 2013 Simon Ruderich
*
* 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 <http://www.gnu.org/licenses/>.
*/
#define _GNU_SOURCE /* for program_invocation_name */
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <error.h>
void (*error_print_progname)(void);
static void print_prognmae(void) {
fprintf(stderr, "PROG");
}
int main(int argc, char **argv) {
program_invocation_name = "./example_error";
error(0, 0, "<message>");
error_at_line(0, 0, "file", 42, "<message>");
error(0, ENOMEM, "<message>");
error_at_line(0, ENOMEM, "file", 42, "<message>");
error_at_line(0, ENOMEM, "file", 42, "<message>");
error_print_progname = print_prognmae;
error_one_per_line = 1;
error(0, 0, "<message>");
error_at_line(0, 0, "file", 42, "<message>");
error(0, ENOMEM, "<message>");
error_at_line(0, ENOMEM, "file", 42, "<message>");
error_at_line(0, ENOMEM, "file", 42, "<message>");
/* Exit codes are not tested. */
return EXIT_SUCCESS;
}

10
tests/example_error.expected Normal file
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@@ -0,0 +1,10 @@
>STDERR>./example_error:<STDERR<>STDERR> <STDERR<>STDERR><message><STDERR<>STDERR>
<STDERR<>STDERR>./example_error:<STDERR<>STDERR>file:42:<STDERR<>STDERR> <STDERR<>STDERR><message><STDERR<>STDERR>
<STDERR<>STDERR>./example_error:<STDERR<>STDERR> <STDERR<>STDERR><message><STDERR<>STDERR>: Cannot allocate memory<STDERR<>STDERR>
<STDERR<>STDERR>./example_error:<STDERR<>STDERR>file:42:<STDERR<>STDERR> <STDERR<>STDERR><message><STDERR<>STDERR>: Cannot allocate memory<STDERR<>STDERR>
<STDERR<>STDERR>./example_error:<STDERR<>STDERR>file:42:<STDERR<>STDERR> <STDERR<>STDERR><message><STDERR<>STDERR>: Cannot allocate memory<STDERR<>STDERR>
<STDERR<>STDERR>PROG<STDERR<>STDERR><message><STDERR<>STDERR>
<STDERR<>STDERR>PROG<STDERR<>STDERR>file:42:<STDERR<>STDERR> <STDERR<>STDERR><message><STDERR<>STDERR>
<STDERR<>STDERR>PROG<STDERR<>STDERR><message><STDERR<>STDERR>: Cannot allocate memory<STDERR<>STDERR>
<STDERR<>STDERR>PROG<STDERR<>STDERR>file:42:<STDERR<>STDERR> <STDERR<>STDERR><message><STDERR<>STDERR>: Cannot allocate memory<STDERR<>STDERR>
<STDERR<

5
tests/run.sh
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@@ -35,9 +35,14 @@ test_script example-redirects.sh
test_program example
test_program example_exec
test_program example_vfork
test -x "$builddir/example_error" && test_program example_error
test_script_subshell example-simple.sh
test_script_subshell example-redirects.sh
test_program_subshell example
test_program_subshell example_exec
test_program_subshell example_vfork
test -x "$builddir/example_error" && test_program_subshell example_error
# Necessary in case the test -x evaluates to false.
true