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#include <stdarg.h>
#include <stddef.h>
#include <setjmp.h>
#include <assert.h>
#include <cmocka.h>
/* cmocka < 1.0 didn't support these features we need */
#ifndef assert_ptr_equal
#define assert_ptr_equal(a, b) \
_assert_int_equal(cast_ptr_to_largest_integral_type(a), \
cast_ptr_to_largest_integral_type(b), \
__FILE__, __LINE__)
#define CMUnitTest UnitTest
#define cmocka_unit_test unit_test
#define cmocka_run_group_tests(t, setup, teardown) run_tests(t)
#endif
extern void mock_assert(const int result, const char* const expression,
const char * const file, const int line);
#undef assert
#define assert(expression) \
mock_assert((int)(expression), #expression, __FILE__, __LINE__);
#include "alloc-inl.h"
void __wrap_exit(int status);
/* remap exit -> assert, then use cmocka's mock_assert
(compile with `--wrap=exit`) */
extern void exit(int status);
extern void __real_exit(int status);
void __wrap_exit(int status) {
(void) status;
assert(0);
}
int __wrap_printf(const char *format, ...);
/* ignore all printfs */
#undef printf
extern int printf(const char *format, ...);
//extern int __real_printf(const char *format, ...);
int __wrap_printf(const char *format, ...) {
(void)format;
return 1;
}
#define BUF_PARAMS (void **)&buf, &size
/*
static int setup(void **state) {
return 0;
}
*/
static void test_null_allocs(void **state) {
(void)state;
void *buf = NULL;
size_t size = 0;
void *ptr = ck_maybe_grow(BUF_PARAMS, 100);
assert_true(buf == ptr);
assert_true(size >= 100);
ck_free(ptr);
}
static void test_nonpow2_size(void **state) {
(void)state;
char *buf = ck_alloc(150);
size_t size = 150;
buf[140] = '5';
char *ptr = ck_maybe_grow(BUF_PARAMS, 160);
assert_ptr_equal(buf, ptr);
assert_true(size >= 160);
assert_true(buf[140] == '5');
ck_free(ptr);
}
static void test_zero_size(void **state) {
(void)state;
char *buf = NULL;
size_t size = 0;
assert_non_null(maybe_grow(BUF_PARAMS, 0));
free(buf);
buf = NULL;
size = 0;
char *ptr = ck_maybe_grow(BUF_PARAMS, 100);
assert_non_null(ptr);
assert_ptr_equal(buf, ptr);
assert_true(size >= 100);
expect_assert_failure(ck_maybe_grow(BUF_PARAMS, 0));
ck_free(ptr);
}
static void test_unchanged_size(void **state) {
(void)state;
void *buf = ck_alloc(100);
size_t size = 100;
void *buf_before = buf;
void *buf_after = ck_maybe_grow(BUF_PARAMS, 100);
assert_ptr_equal(buf, buf_after);
assert_ptr_equal(buf_after, buf_before);
ck_free(buf);
}
static void test_grow_multiple(void **state) {
(void)state;
char *buf = NULL;
size_t size = 0;
char *ptr = ck_maybe_grow(BUF_PARAMS, 100);
assert_ptr_equal(ptr, buf);
assert_true(size >= 100);
assert_int_equal(size, next_pow2(size));
buf[50] = '5';
ptr = (char *)ck_maybe_grow(BUF_PARAMS, 1000);
assert_ptr_equal(ptr, buf);
assert_true(size >= 100);
assert_int_equal(size, next_pow2(size));
buf[500] = '5';
ptr = (char *)ck_maybe_grow(BUF_PARAMS, 10000);
assert_ptr_equal(ptr, buf);
assert_true(size >= 10000);
assert_int_equal(size, next_pow2(size));
buf[5000] = '5';
assert_int_equal(buf[50], '5');
assert_int_equal(buf[500], '5');
assert_int_equal(buf[5000], '5');
ck_free(buf);
}
/*
static int teardown(void **state) {
return 0;
}
*/
int main(int argc, char **argv) {
(void)argc;
(void)argv;
const struct CMUnitTest tests[] = {
cmocka_unit_test(test_null_allocs),
cmocka_unit_test(test_nonpow2_size),
cmocka_unit_test(test_zero_size),
cmocka_unit_test(test_unchanged_size),
cmocka_unit_test(test_grow_multiple),
};
//return cmocka_run_group_tests (tests, setup, teardown);
__real_exit( cmocka_run_group_tests (tests, NULL, NULL) );
// fake return for dumb compilers
return 0;
}
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