115 lines
2.1 KiB
C
115 lines
2.1 KiB
C
/*
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* SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <setjmp.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h> // Required by <cmocka.h>
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#include <stddef.h> // Required by <cmocka.h>
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#include <setjmp.h> // Required by <cmocka.h>
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#include <stdint.h> // Required by <cmocka.h>
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#include <cmocka.h>
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#include "string/sprintf.h"
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#define assert_unreachable() assert_true(0)
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#define XASPRINTF_CALLED (-36)
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#define EXIT_CALLED (42)
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#define TEST_OK (-6)
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static jmp_buf jmpb;
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/**********************
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* WRAPPERS
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**********************/
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int __real_vasprintf(char **restrict p, const char *restrict fmt, va_list ap);
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int __wrap_vasprintf(char **restrict p, const char *restrict fmt, va_list ap);
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void __wrap_exit(int status);
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int
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__wrap_vasprintf(char **restrict p, const char *restrict fmt, va_list ap)
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{
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return mock() == -1 ? -1 : __real_vasprintf(p, fmt, ap);
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}
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void
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__wrap_exit(int status)
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{
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longjmp(jmpb, EXIT_CALLED);
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}
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/**********************
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* TEST
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**********************/
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static void test_xasprintf_exit(void **state);
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static void test_xasprintf_ok(void **state);
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static void
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test_xasprintf_exit(void **state)
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{
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volatile int len;
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char *volatile p;
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will_return(__wrap_vasprintf, -1);
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len = 0;
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switch (setjmp(jmpb)) {
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case 0:
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len = XASPRINTF_CALLED;
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len = xasprintf(&p, "foo%s", "bar");
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assert_unreachable();
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break;
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case EXIT_CALLED:
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assert_int_equal(len, XASPRINTF_CALLED);
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len = TEST_OK;
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break;
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default:
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assert_unreachable();
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break;
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}
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assert_int_equal(len, TEST_OK);
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}
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static void
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test_xasprintf_ok(void **state)
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{
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int len;
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char *p;
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// Trick: it will actually return the length, not 0.
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will_return(__wrap_vasprintf, 0);
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len = xasprintf(&p, "foo%d%s", 1, "bar");
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assert_int_equal(len, strlen("foo1bar"));
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assert_string_equal(p, "foo1bar");
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free(p);
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}
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int
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main(void)
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{
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const struct CMUnitTest tests[] = {
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cmocka_unit_test(test_xasprintf_exit),
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cmocka_unit_test(test_xasprintf_ok),
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};
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return cmocka_run_group_tests(tests, NULL, NULL);
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}
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