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#include <test.h>
#include <refcount.h>
// Simple initialization test
static void test_init_destroy_RefCount(void)
{
RefCount *refCount = NULL;
RefCountNew(&refCount);
assert_int_equal(0, refCount->user_count);
assert_true(refCount->last == NULL);
assert_true(refCount->users == NULL);
// Now we destroy the refcount.
RefCountDestroy(&refCount);
assert_true(refCount == NULL);
// Try to destroy a NULL refCount
RefCountDestroy(&refCount);
}
static void test_attach_detach_RefCount(void)
{
/*
* This test does not check for NULL pointers, otherwise asserts will
* be triggered. Neither does it check for non-existent owners.
*/
int data1 = 0xdeadbeef;
int data2 = 0xbad00bad;
int data3 = 0x55aaaa55;
RefCount *refCount = NULL;
// initialize the refcount
RefCountNew(&refCount);
assert_int_equal(0, refCount->user_count);
assert_true(refCount->last == NULL);
assert_true(refCount->users == NULL);
// attach it to the first data
RefCountAttach(refCount, &data1);
// Check the result
assert_int_equal(1, refCount->user_count);
assert_true(refCount->last->next == NULL);
assert_true(refCount->last->previous == NULL);
assert_true(refCount->last->user == (void *)&data1);
// Attach the second data
RefCountAttach(refCount, &data2);
// Check the result
assert_int_equal(2, refCount->user_count);
assert_true(refCount->last->next == NULL);
assert_true(refCount->last->previous != NULL);
assert_true(refCount->last->user == (void *)&data2);
// Detach the first data
RefCountDetach(refCount, &data1);
// Check the result
assert_int_equal(1, refCount->user_count);
assert_true(refCount->last->next == NULL);
assert_true(refCount->last->previous == NULL);
assert_true(refCount->last->user == (void *)&data2);
// Attach the third data
RefCountAttach(refCount, &data3);
// Check the result
assert_int_equal(2, refCount->user_count);
assert_true(refCount->last->next == NULL);
assert_true(refCount->last->previous != NULL);
assert_true(refCount->last->user == (void *)&data3);
// Attach the first data
RefCountAttach(refCount, &data1);
// Check the result
assert_int_equal(3, refCount->user_count);
assert_true(refCount->last->next == NULL);
assert_true(refCount->last->previous != NULL);
assert_true(refCount->last->user == (void *)&data1);
// Detach the third data
RefCountDetach(refCount, &data3);
// Check the result
assert_int_equal(2, refCount->user_count);
assert_true(refCount->last->next == NULL);
assert_true(refCount->last->previous != NULL);
assert_true(refCount->last->user == (void *)&data1);
// Detach the first data
RefCountDetach(refCount, &data1);
// Check the result
assert_int_equal(1, refCount->user_count);
assert_true(refCount->last->next == NULL);
assert_true(refCount->last->previous == NULL);
assert_true(refCount->last->user == (void *)&data2);
/*
* We cannot detach the last element because that will assert.
* Whenever there is only one element the only thing is to destroy
* the refcount.
*/
// Destroy the refcount
RefCountDestroy(&refCount);
}
static void test_isSharedRefCount(void)
{
int data1 = 0xdeadbeef;
int data2 = 0xbad00bad;
RefCount *refCount = NULL;
// initialize the refcount
RefCountNew(&refCount);
assert_int_equal(0, refCount->user_count);
assert_true(refCount->last == NULL);
assert_true(refCount->users == NULL);
// isShared should return false
assert_false(RefCountIsShared(refCount));
// attach it to the first data
RefCountAttach(refCount, &data1);
// Check the result
assert_int_equal(1, refCount->user_count);
assert_true(refCount->last->next == NULL);
assert_true(refCount->last->previous == NULL);
assert_true(refCount->last->user == (void *)&data1);
// isShared should return false
assert_false(RefCountIsShared(refCount));
// Attach the second data
RefCountAttach(refCount, &data2);
// Check the result
assert_int_equal(2, refCount->user_count);
assert_true(refCount->last->next == NULL);
assert_true(refCount->last->previous != NULL);
assert_true(refCount->last->user == (void *)&data2);
// isShared should return true
assert_true(RefCountIsShared(refCount));
// Detach and try again
RefCountDetach(refCount, &data1);
// Check the result
assert_int_equal(1, refCount->user_count);
assert_true(refCount->last->next == NULL);
assert_true(refCount->last->previous == NULL);
assert_true(refCount->last->user == (void *)&data2);
// isShared should return false
assert_false(RefCountIsShared(refCount));
// Try isShared with a NULL refCount
assert_false(RefCountIsShared(NULL));
// Destroy the refcount
RefCountDestroy(&refCount);
}
static void test_isEqualRefCount(void)
{
int data2 = 0xbad00bad;
RefCount *refCount1 = NULL;
RefCount *refCount2 = NULL;
// initialize refcount1
RefCountNew(&refCount1);
assert_int_equal(0, refCount1->user_count);
assert_true(refCount1->last == NULL);
assert_true(refCount1->users == NULL);
// initialize refcount2 as a copy of refcount1
refCount2 = refCount1;
// isEqual should return true
assert_true(RefCountIsEqual(refCount1, refCount2));
/* Initialize refcount2 on its own */
RefCountNew(&refCount2);
assert_int_equal(0, refCount2->user_count);
assert_true(refCount2->last == NULL);
assert_true(refCount2->users == NULL);
// isEqual should return false
assert_false(RefCountIsEqual(refCount1, refCount2));
// Add one to refcount1
RefCountAttach(refCount1, &data2);
// isEqual should return false
assert_false(RefCountIsEqual(refCount1, refCount2));
// Add the same to refcount2
RefCountAttach(refCount2, &data2);
// isEqual should return false
assert_false(RefCountIsEqual(refCount1, refCount2));
// Try one NULL
assert_false(RefCountIsEqual(refCount1, NULL));
assert_false(RefCountIsEqual(NULL, refCount2));
// Both NULL
assert_false(RefCountIsEqual(NULL, NULL));
// Destroy both refcounts
RefCountDestroy(&refCount1);
RefCountDestroy(&refCount2);
}
int main()
{
const UnitTest tests[] = {
unit_test(test_init_destroy_RefCount)
, unit_test(test_attach_detach_RefCount)
, unit_test(test_isSharedRefCount)
, unit_test(test_isEqualRefCount)
};
return run_tests(tests);
}
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