// SPDX-License-Identifier: GPL-2.0-only
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "debug.h"
#include "tests.h"
#include <api/io.h>
#include <linux/kernel.h>
#include <linux/zalloc.h>
#define TEMPL "/tmp/perf-test-XXXXXX"
#define EXPECT_EQUAL(val, expected) \
do { \
if (val != expected) { \
pr_debug("%s:%d: %d != %d\n", \
__FILE__, __LINE__, val, expected); \
ret = -1; \
} \
} while (0)
#define EXPECT_EQUAL64(val, expected) \
do { \
if (val != expected) { \
pr_debug("%s:%d: %lld != %lld\n", \
__FILE__, __LINE__, val, expected); \
ret = -1; \
} \
} while (0)
static int make_test_file(char path[PATH_MAX], const char *contents)
{
ssize_t contents_len = strlen(contents);
int fd;
strcpy(path, TEMPL);
fd = mkstemp(path);
if (fd < 0) {
pr_debug("mkstemp failed");
return -1;
}
if (write(fd, contents, contents_len) < contents_len) {
pr_debug("short write");
close(fd);
unlink(path);
return -1;
}
close(fd);
return 0;
}
static int setup_test(char path[PATH_MAX], const char *contents,
size_t buf_size, struct io *io)
{
if (make_test_file(path, contents))
return -1;
io->fd = open(path, O_RDONLY);
if (io->fd < 0) {
pr_debug("Failed to open '%s'\n", path);
unlink(path);
return -1;
}
io->buf = malloc(buf_size);
if (io->buf == NULL) {
pr_debug("Failed to allocate memory");
close(io->fd);
unlink(path);
return -1;
}
io__init(io, io->fd, io->buf, buf_size);
return 0;
}
static void cleanup_test(char path[PATH_MAX], struct io *io)
{
zfree(&io->buf);
close(io->fd);
unlink(path);
}
static int do_test_get_char(const char *test_string, size_t buf_size)
{
char path[PATH_MAX];
struct io io;
int ch, ret = 0;
size_t i;
if (setup_test(path, test_string, buf_size, &io))
return -1;
for (i = 0; i < strlen(test_string); i++) {
ch = io__get_char(&io);
EXPECT_EQUAL(ch, test_string[i]);
EXPECT_EQUAL(io.eof, false);
}
ch = io__get_char(&io);
EXPECT_EQUAL(ch, -1);
EXPECT_EQUAL(io.eof, true);
cleanup_test(path, &io);
return ret;
}
static int test_get_char(void)
{
int i, ret = 0;
size_t j;
static const char *const test_strings[] = {
"12345678abcdef90",
"a\nb\nc\nd\n",
"\a\b\t\v\f\r",
};
for (i = 0; i <= 10; i++) {
for (j = 0; j < ARRAY_SIZE(test_strings); j++) {
if (do_test_get_char(test_strings[j], 1 << i))
ret = -1;
}
}
return ret;
}
static int do_test_get_hex(const char *test_string,
__u64 val1, int ch1,
__u64 val2, int ch2,
__u64 val3, int ch3,
bool end_eof)
{
char path[PATH_MAX];
struct io io;
int ch, ret = 0;
__u64 hex;
if (setup_test(path, test_string, 4, &io))
return -1;
ch = io__get_hex(&io, &hex);
EXPECT_EQUAL64(hex, val1);
EXPECT_EQUAL(ch, ch1);
ch = io__get_hex(&io, &hex);
EXPECT_EQUAL64(hex, val2);
EXPECT_EQUAL(ch, ch2);
ch = io__get_hex(&io, &hex);
EXPECT_EQUAL64(hex, val3);
EXPECT_EQUAL(ch, ch3);
EXPECT_EQUAL(io.eof, end_eof);
cleanup_test(path, &io);
return ret;
}
static int test_get_hex(void)
{
int ret = 0;
if (do_test_get_hex("12345678abcdef90",
0x12345678abcdef90, -1,
0, -1,
0, -1,
true))
ret = -1;
if (do_test_get_hex("1\n2\n3\n",
1, '\n',
2, '\n',
3, '\n',
false))
ret = -1;
if (do_test_get_hex("12345678ABCDEF90;a;b",
0x12345678abcdef90, ';',
0xa, ';',
0xb, -1,
true))
ret = -1;
if (do_test_get_hex("0x1x2x",
0, 'x',
1, 'x',
2, 'x',
false))
ret = -1;
if (do_test_get_hex("x1x",
0, -2,
1, 'x',
0, -1,
true))
ret = -1;
if (do_test_get_hex("10000000000000000000000000000abcdefgh99i",
0xabcdef, 'g',
0, -2,
0x99, 'i',
false))
ret = -1;
return ret;
}
static int do_test_get_dec(const char *test_string,
__u64 val1, int ch1,
__u64 val2, int ch2,
__u64 val3, int ch3,
bool end_eof)
{
char path[PATH_MAX];
struct io io;
int ch, ret = 0;
__u64 dec;
if (setup_test(path, test_string, 4, &io))
return -1;
ch = io__get_dec(&io, &dec);
EXPECT_EQUAL64(dec, val1);
EXPECT_EQUAL(ch, ch1);
ch = io__get_dec(&io, &dec);
EXPECT_EQUAL64(dec, val2);
EXPECT_EQUAL(ch, ch2);
ch = io__get_dec(&io, &dec);
EXPECT_EQUAL64(dec, val3);
EXPECT_EQUAL(ch, ch3);
EXPECT_EQUAL(io.eof, end_eof);
cleanup_test(path, &io);
return ret;
}
static int test_get_dec(void)
{
int ret = 0;
if (do_test_get_dec("12345678abcdef90",
12345678, 'a',
0, -2,
0, -2,
false))
ret = -1;
if (do_test_get_dec("1\n2\n3\n",
1, '\n',
2, '\n',
3, '\n',
false))
ret = -1;
if (do_test_get_dec("12345678;1;2",
12345678, ';',
1, ';',
2, -1,
true))
ret = -1;
if (do_test_get_dec("0x1x2x",
0, 'x',
1, 'x',
2, 'x',
false))
ret = -1;
if (do_test_get_dec("x1x",
0, -2,
1, 'x',
0, -1,
true))
ret = -1;
if (do_test_get_dec("10000000000000000000000000000000000000000000000000000000000123456789ab99c",
123456789, 'a',
0, -2,
99, 'c',
false))
ret = -1;
return ret;
}
static int test_get_line(void)
{
char path[PATH_MAX];
struct io io;
char test_string[1024];
char *line = NULL;
size_t i, line_len = 0;
size_t buf_size = 128;
int ret = 0;
for (i = 0; i < 512; i++)
test_string[i] = 'a';
test_string[512] = '\n';
for (i = 513; i < 1023; i++)
test_string[i] = 'b';
test_string[1023] = '\0';
if (setup_test(path, test_string, buf_size, &io))
return -1;
EXPECT_EQUAL((int)io__getline(&io, &line, &line_len), 513);
EXPECT_EQUAL((int)strlen(line), 513);
for (i = 0; i < 512; i++)
EXPECT_EQUAL(line[i], 'a');
EXPECT_EQUAL(line[512], '\n');
EXPECT_EQUAL((int)io__getline(&io, &line, &line_len), 510);
for (i = 0; i < 510; i++)
EXPECT_EQUAL(line[i], 'b');
free(line);
cleanup_test(path, &io);
return ret;
}
static int test__api_io(struct test_suite *test __maybe_unused,
int subtest __maybe_unused)
{
int ret = 0;
if (test_get_char())
ret = TEST_FAIL;
if (test_get_hex())
ret = TEST_FAIL;
if (test_get_dec())
ret = TEST_FAIL;
if (test_get_line())
ret = TEST_FAIL;
return ret;
}
DEFINE_SUITE("Test api io", api_io);
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