string: Add strerror, strerror_r, and strerror_l test

Checked on x86-64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu,
and s390x-linux-gnu.

Tested-by: Carlos O'Donell <carlos@redhat.com>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>

1 files changed, 76 insertions, 0 deletions

diff --git a/string/tst-strerror.c b/string/tst-strerror.c
new file mode 100644
index 0000000..3af5123
--- /dev/null
+++ b/string/tst-strerror.c
@@ -0,0 +1,76 @@
+/* Test for strerror, strerror_r, and strerror_l.
+
+   Copyright (C) 2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#include <locale.h>
+#include <array_length.h>
+
+#include <support/support.h>
+#include <support/check.h>
+
+static int
+do_test (void)
+{
+  xsetlocale (LC_ALL, "C");
+
+  TEST_COMPARE_STRING (strerror (EINVAL), "Invalid argument");
+  TEST_COMPARE_STRING (strerror (-1),     "Unknown error -1");
+
+  {
+    char buffer[32];
+    TEST_COMPARE_STRING (strerror_r (EINVAL, buffer, 8),
+			 "Invalid argument");
+    TEST_COMPARE_STRING (strerror_r (-1, buffer, 8),
+			 "Unknown");
+    TEST_COMPARE_STRING (strerror_r (-1, buffer, 16),
+			 "Unknown error -");
+    TEST_COMPARE_STRING (strerror_r (-1, buffer, 32),
+			 "Unknown error -1");
+  }
+
+  locale_t l = xnewlocale (LC_ALL_MASK, "pt_BR.UTF-8", NULL);
+
+  TEST_COMPARE_STRING (strerror_l (EINVAL, l), "Argumento inv\303\241lido");
+  TEST_COMPARE_STRING (strerror_l (-1, l),     "Erro desconhecido -1");
+
+  xuselocale (l);
+
+  TEST_COMPARE_STRING (strerror (EINVAL), "Argumento inv\303\241lido");
+  TEST_COMPARE_STRING (strerror (-1),     "Erro desconhecido -1");
+
+  {
+    char buffer[32];
+    TEST_COMPARE_STRING (strerror_r (EINVAL, buffer, 8),
+			 "Argumento inv\303\241lido");
+    TEST_COMPARE_STRING (strerror_r (-1, buffer, 8),
+			 "Erro de");
+    TEST_COMPARE_STRING (strerror_r (-1, buffer, 16),
+			 "Erro desconheci");
+    TEST_COMPARE_STRING (strerror_r (-1, buffer, 32),
+			 "Erro desconhecido -1");
+  }
+
+  freelocale (l);
+
+  return 0;
+}
+
+#include <support/test-driver.c>