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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2020 Sean Anderson <seanga2@gmail.com>
*
* Portions of these tests were inspired by glibc's posix/bug-getopt1.c and
* posix/tst-getopt-cancel.c
*/
#include <common.h>
#include <getopt.h>
#include <test/lib.h>
#include <test/test.h>
#include <test/ut.h>
static int do_test_getopt(struct unit_test_state *uts, int line,
struct getopt_state *gs, const char *optstring,
int args, char *argv[], int expected_count,
int expected[])
{
int opt;
getopt_init_state(gs);
for (int i = 0; i < expected_count; i++) {
opt = getopt_silent(gs, args, argv, optstring);
if (expected[i] != opt) {
/*
* Fudge the line number so we can tell which test
* failed
*/
ut_failf(uts, __FILE__, line, __func__,
"expected[i] == getopt()",
"Expected '%c' (%d) with i=%d, got '%c' (%d)",
expected[i], expected[i], i, opt, opt);
return CMD_RET_FAILURE;
}
}
opt = getopt_silent(gs, args, argv, optstring);
if (opt != -1) {
ut_failf(uts, __FILE__, line, __func__,
"getopt() != -1",
"Expected -1, got '%c' (%d)", opt, opt);
return CMD_RET_FAILURE;
}
return 0;
}
#define test_getopt(optstring, argv, expected) do { \
int ret = do_test_getopt(uts, __LINE__, &gs, optstring, \
ARRAY_SIZE(argv) - 1, argv, \
ARRAY_SIZE(expected), expected); \
if (ret) \
return ret; \
} while (0)
static int lib_test_getopt(struct unit_test_state *uts)
{
struct getopt_state gs;
/* Happy path */
test_getopt("ab:c",
((char *[]){ "program", "-cb", "x", "-a", "foo", 0 }),
((int []){ 'c', 'b', 'a' }));
ut_asserteq(4, gs.index);
/* Make sure we pick up the optional argument */
test_getopt("a::b:c",
((char *[]){ "program", "-cbx", "-a", "foo", 0 }),
((int []){ 'c', 'b', 'a' }));
ut_asserteq(4, gs.index);
/* Test required arguments */
test_getopt("a:b", ((char *[]){ "program", "-a", 0 }),
((int []){ ':' }));
ut_asserteq('a', gs.opt);
test_getopt("a:b", ((char *[]){ "program", "-b", "-a", 0 }),
((int []){ 'b', ':' }));
ut_asserteq('a', gs.opt);
/* Test invalid arguments */
test_getopt("ab:c", ((char *[]){ "program", "-d", 0 }),
((int []){ '?' }));
ut_asserteq('d', gs.opt);
/* Test arg */
test_getopt("a::b:c",
((char *[]){ "program", "-a", 0 }),
((int []){ 'a' }));
ut_asserteq(2, gs.index);
ut_assertnull(gs.arg);
test_getopt("a::b:c",
((char *[]){ "program", "-afoo", 0 }),
((int []){ 'a' }));
ut_asserteq(2, gs.index);
ut_assertnonnull(gs.arg);
ut_asserteq_str("foo", gs.arg);
test_getopt("a::b:c",
((char *[]){ "program", "-a", "foo", 0 }),
((int []){ 'a' }));
ut_asserteq(3, gs.index);
ut_assertnonnull(gs.arg);
ut_asserteq_str("foo", gs.arg);
test_getopt("a::b:c",
((char *[]){ "program", "-bfoo", 0 }),
((int []){ 'b' }));
ut_asserteq(2, gs.index);
ut_assertnonnull(gs.arg);
ut_asserteq_str("foo", gs.arg);
test_getopt("a::b:c",
((char *[]){ "program", "-b", "foo", 0 }),
((int []){ 'b' }));
ut_asserteq(3, gs.index);
ut_assertnonnull(gs.arg);
ut_asserteq_str("foo", gs.arg);
return 0;
}
LIB_TEST(lib_test_getopt, 0);
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