101 lines
2.4 KiB
C
101 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Test cases for API provided by cmdline.c
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*/
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#include <kunit/test.h>
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#include <linux/kernel.h>
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#include <linux/random.h>
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#include <linux/string.h>
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static const char *cmdline_test_strings[] = {
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"\"\"", "" , "=" , "\"-", "," , "-," , ",-" , "-" ,
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"+," , "--", ",,", "''" , "\"\",", "\",\"", "-\"\"", "\"",
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};
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static const int cmdline_test_values[] = {
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1, 1, 1, 1, 2, 3, 2, 3,
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1, 3, 2, 1, 1, 1, 3, 1,
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};
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static void cmdline_do_one_test(struct kunit *test, const char *in, int rc, int offset)
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{
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const char *fmt = "Pattern: %s";
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const char *out = in;
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int dummy;
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int ret;
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ret = get_option((char **)&out, &dummy);
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KUNIT_EXPECT_EQ_MSG(test, ret, rc, fmt, in);
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KUNIT_EXPECT_PTR_EQ_MSG(test, out, in + offset, fmt, in);
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}
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static void cmdline_test_noint(struct kunit *test)
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{
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unsigned int i = 0;
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do {
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const char *str = cmdline_test_strings[i];
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int rc = 0;
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int offset;
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/* Only first and leading '-' will advance the pointer */
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offset = !!(*str == '-');
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cmdline_do_one_test(test, str, rc, offset);
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} while (++i < ARRAY_SIZE(cmdline_test_strings));
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}
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static void cmdline_test_lead_int(struct kunit *test)
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{
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unsigned int i = 0;
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char in[32];
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do {
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const char *str = cmdline_test_strings[i];
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int rc = cmdline_test_values[i];
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int offset;
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sprintf(in, "%u%s", get_random_int() % 256, str);
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/* Only first '-' after the number will advance the pointer */
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offset = strlen(in) - strlen(str) + !!(rc == 2);
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cmdline_do_one_test(test, in, rc, offset);
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} while (++i < ARRAY_SIZE(cmdline_test_strings));
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}
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static void cmdline_test_tail_int(struct kunit *test)
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{
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unsigned int i = 0;
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char in[32];
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do {
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const char *str = cmdline_test_strings[i];
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/* When "" or "-" the result will be valid integer */
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int rc = strcmp(str, "") ? (strcmp(str, "-") ? 0 : 1) : 1;
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int offset;
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sprintf(in, "%s%u", str, get_random_int() % 256);
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/*
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* Only first and leading '-' not followed by integer
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* will advance the pointer.
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*/
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offset = rc ? strlen(in) : !!(*str == '-');
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cmdline_do_one_test(test, in, rc, offset);
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} while (++i < ARRAY_SIZE(cmdline_test_strings));
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}
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static struct kunit_case cmdline_test_cases[] = {
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KUNIT_CASE(cmdline_test_noint),
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KUNIT_CASE(cmdline_test_lead_int),
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KUNIT_CASE(cmdline_test_tail_int),
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{}
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};
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static struct kunit_suite cmdline_test_suite = {
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.name = "cmdline",
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.test_cases = cmdline_test_cases,
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};
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kunit_test_suite(cmdline_test_suite);
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MODULE_LICENSE("GPL");
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