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-rw-r--r--libio/tst-readline.c237
1 files changed, 0 insertions, 237 deletions
diff --git a/libio/tst-readline.c b/libio/tst-readline.c
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index 40663ed..0000000
--- a/libio/tst-readline.c
+++ /dev/null
@@ -1,237 +0,0 @@
-/* Test the __libc_readline_unlocked function.
- Copyright (C) 2018-2020 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/>. */
-
-/* Exercise __libc_readline_unlocked with various combinations of line
- lengths, stdio buffer sizes, and line read buffer sizes. */
-
-#include <errno.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <string.h>
-#include <support/check.h>
-#include <support/support.h>
-#include <support/temp_file.h>
-#include <support/test-driver.h>
-#include <support/xmemstream.h>
-#include <support/xstdio.h>
-#include <support/xunistd.h>
-
-enum
- {
- maximum_line_length = 7,
- number_of_lines = 3,
- };
-
-/* -1: Do not set buffer size. 0: unbuffered. Otherwise, use this as
- the size of the buffer. */
-static int buffer_size;
-
-/* These size of the buffer used for reading. Must be at least 2. */
-static int read_size;
-
-/* If a read files with ERANGE, increase the buffer size by this
- amount. Must be positive. */
-static int read_size_increment;
-
-/* If non-zero, do not reset the read size after an ERANGE error. */
-static int read_size_preserve;
-
-/* If non-zero, no '\n' at the end of the file. */
-static int no_newline_at_eof;
-
-/* Length of the line, or -1 if the line is not present. */
-static int line_lengths[number_of_lines];
-
-/* The name of the test file. */
-static char *test_file_path;
-
-/* The contents of the test file. */
-static char expected_contents[(maximum_line_length + 2) * number_of_lines + 1];
-static size_t expected_length;
-
-/* Returns a random byte which is not zero or the line terminator. */
-static char
-random_char (void)
-{
- static unsigned int rand_state = 1;
- while (true)
- {
- char result = rand_r (&rand_state) >> 16;
- if (result != 0 && result != '\n')
- return result;
- }
-}
-
-/* Create the test file. */
-static void
-prepare (int argc, char **argv)
-{
- int fd = create_temp_file ("tst-readline-", &test_file_path);
- TEST_VERIFY_EXIT (fd >= 0);
- xclose (fd);
-}
-
-/* Prepare the test file. Return false if the test parameters are
- incongruent and the test should be skipped. */
-static bool
-write_test_file (void)
-{
- expected_length = 0;
- char *p = expected_contents;
- for (int lineno = 0; lineno < number_of_lines; ++lineno)
- for (int i = 0; i < line_lengths[lineno]; ++i)
- *p++ = random_char ();
- expected_length = p - &expected_contents[0];
- if (no_newline_at_eof)
- {
- if (expected_length == 0)
- return false;
- --expected_length;
- --p;
- }
- if (test_verbose > 0)
- {
- printf ("info: writing test file of %zu bytes:\n", expected_length);
- for (int i = 0; i < number_of_lines; ++i)
- printf (" line %d: %d\n", i, line_lengths[i]);
- if (no_newline_at_eof)
- puts (" (no newline at EOF)");
- }
- TEST_VERIFY_EXIT (expected_length < sizeof (expected_contents));
- *p++ = '\0';
- support_write_file_string (test_file_path, expected_contents);
- return true;
-}
-
-/* Run a single test (a combination of a test file and read
- parameters). */
-static void
-run_test (void)
-{
- TEST_VERIFY_EXIT (read_size_increment > 0);
- if (test_verbose > 0)
- {
- printf ("info: running test: buffer_size=%d read_size=%d\n"
- " read_size_increment=%d read_size_preserve=%d\n",
- buffer_size, read_size, read_size_increment, read_size_preserve);
- }
-
- struct xmemstream result;
- xopen_memstream (&result);
-
- FILE *fp = xfopen (test_file_path, "rce");
- char *fp_buffer = NULL;
- if (buffer_size == 0)
- TEST_VERIFY_EXIT (setvbuf (fp, NULL, _IONBF, 0) == 0);
- if (buffer_size > 0)
- {
- fp_buffer = xmalloc (buffer_size);
- TEST_VERIFY_EXIT (setvbuf (fp, fp_buffer, _IOFBF, buffer_size) == 0);
- }
-
- char *line_buffer = xmalloc (read_size);
- size_t line_buffer_size = read_size;
-
- while (true)
- {
- ssize_t ret = __libc_readline_unlocked
- (fp, line_buffer, line_buffer_size);
- if (ret < 0)
- {
- TEST_VERIFY (ret == -1);
- if (errno != ERANGE)
- FAIL_EXIT1 ("__libc_readline_unlocked: %m");
- line_buffer_size += read_size_increment;
- free (line_buffer);
- line_buffer = xmalloc (line_buffer_size);
- /* Try reading this line again. */
- }
- else if (ret == 0)
- break;
- else
- {
- /* A line has been read. Save it. */
- TEST_VERIFY (ret == strlen (line_buffer));
- const char *pnl = strchr (line_buffer, '\n');
- /* If there is a \n, it must be at the end. */
- TEST_VERIFY (pnl == NULL || pnl == line_buffer + ret - 1);
- fputs (line_buffer, result.out);
-
- /* Restore the original read size if required. */
- if (line_buffer_size > read_size && !read_size_preserve)
- {
- line_buffer_size = read_size;
- free (line_buffer);
- line_buffer = xmalloc (line_buffer_size);
- }
- }
- }
-
- xfclose (fp);
- free (fp_buffer);
- free (line_buffer);
-
- xfclose_memstream (&result);
- TEST_VERIFY (result.length == expected_length);
- TEST_VERIFY (strcmp (result.buffer, expected_contents) == 0);
- if (test_verbose > 0)
- {
- printf ("info: expected (%zu): [[%s]]\n",
- expected_length, expected_contents);
- printf ("info: actual (%zu): [[%s]]\n", result.length, result.buffer);
- }
- free (result.buffer);
-}
-
-/* Test one test file with multiple read parameters. */
-static void
-test_one_file (void)
-{
- for (buffer_size = -1; buffer_size <= maximum_line_length + 1; ++buffer_size)
- for (read_size = 2; read_size <= maximum_line_length + 2; ++read_size)
- for (read_size_increment = 1; read_size_increment <= 4;
- ++read_size_increment)
- for (read_size_preserve = 0; read_size_preserve < 2;
- ++read_size_preserve)
- run_test ();
-}
-
-
-static int
-do_test (void)
-{
- /* Set up the test file contents. */
- for (line_lengths[0] = -1; line_lengths[0] <= maximum_line_length;
- ++line_lengths[0])
- for (line_lengths[1] = -1; line_lengths[1] <= maximum_line_length;
- ++line_lengths[1])
- for (line_lengths[2] = -1; line_lengths[2] <= maximum_line_length;
- ++line_lengths[2])
- for (no_newline_at_eof = 0; no_newline_at_eof < 2; ++no_newline_at_eof)
- {
- if (!write_test_file ())
- continue;
- test_one_file ();
- }
- free (test_file_path);
- return 0;
-}
-
-#define TIMEOUT 100
-#define PREPARE prepare
-#include <support/test-driver.c>