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fifofast_test.c
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/*
* fifofast_test.c
*
* Created: 08.11.2018 08:34:58
* Author: Dennis
*/
#include "fifofast_test.h"
//////////////////////////////////////////////////////////////////////////
// Test Macros
//////////////////////////////////////////////////////////////////////////
void fifofast_test_macro_initial()
{
UT_ASSERT(_fff_mem_depth(fifo_uint8) == 4); // constant
UT_ASSERT(_fff_mem_mask(fifo_uint8) == 3); // constant = 0b11
UT_ASSERT(_fff_mem_level(fifo_uint8) == 0);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 4);
UT_ASSERT(_fff_is_empty(fifo_uint8) != 0);
UT_ASSERT(_fff_is_full(fifo_uint8) == 0);
}
void fifofast_test_macro_write(uint8_t startvalue)
{
// add 2 values with the fast '_lite' variant (after init we know it is empty)
// use unusual values (NOT 0, 1, 2 ...) to decrease the likelihood of false positives
_fff_write_lite(fifo_uint8, startvalue+0);
_fff_write_lite(fifo_uint8, startvalue+1);
UT_ASSERT(_fff_mem_level(fifo_uint8) == 2);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 2);
UT_ASSERT(_fff_is_empty(fifo_uint8) == 0);
UT_ASSERT(_fff_is_full(fifo_uint8) == 0);
UT_ASSERT(_fff_peek(fifo_uint8, 0) == startvalue+0);
UT_ASSERT(_fff_peek(fifo_uint8, 1) == startvalue+1);
UT_BREAK();
// add 3 values to demonstrate overflow safety
_fff_write(fifo_uint8, startvalue+2);
_fff_write(fifo_uint8, startvalue+3);
_fff_write(fifo_uint8, startvalue+4);
UT_ASSERT(_fff_mem_level(fifo_uint8) == 4);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 0);
UT_ASSERT(_fff_is_empty(fifo_uint8) == 0);
UT_ASSERT(_fff_is_full(fifo_uint8) != 0);
UT_ASSERT(_fff_peek(fifo_uint8, 0) == startvalue+0);
UT_ASSERT(_fff_peek(fifo_uint8, 1) == startvalue+1);
UT_ASSERT(_fff_peek(fifo_uint8, 2) == startvalue+2);
UT_ASSERT(_fff_peek(fifo_uint8, 3) == startvalue+3);
_fff_reset(fifo_uint8);
// Test reset once only
UT_ASSERT(_fff_mem_level(fifo_uint8) == 0);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 4);
UT_ASSERT(_fff_is_empty(fifo_uint8) != 0);
UT_ASSERT(_fff_is_full(fifo_uint8) == 0);
}
void fifofast_test_macro_peek(uint8_t startvalue)
{
_fff_write_lite(fifo_uint8, startvalue+0);
_fff_write_lite(fifo_uint8, startvalue+1);
_fff_write_lite(fifo_uint8, startvalue+2);
// modify existing value (index 0 and 2) with _fff_peek()
_fff_peek(fifo_uint8, 0) = startvalue+3;
_fff_peek(fifo_uint8, 2) = startvalue+4;
UT_ASSERT(_fff_mem_level(fifo_uint8) == 3);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 1);
UT_ASSERT(_fff_is_empty(fifo_uint8) == 0);
UT_ASSERT(_fff_is_full(fifo_uint8) == 0);
UT_ASSERT(_fff_peek(fifo_uint8, 0) == startvalue+3);
UT_ASSERT(_fff_peek(fifo_uint8, 1) == startvalue+1);
UT_ASSERT(_fff_peek(fifo_uint8, 2) == startvalue+4);
// demonstrate "out of bounds" safety (no over-read/ over-write possible)
UT_ASSERT(_fff_peek(fifo_uint8, 4) == startvalue+3);
_fff_reset(fifo_uint8);
}
void fifofast_test_macro_read(uint8_t startvalue)
{
_fff_write_lite(fifo_uint8, startvalue+0);
_fff_write_lite(fifo_uint8, startvalue+1);
_fff_write_lite(fifo_uint8, startvalue+2);
// read 2 values with the fast '_lite' variant (we know we have more than two entries)
UT_ASSERT(_fff_read_lite(fifo_uint8) == startvalue+0);
UT_ASSERT(_fff_read_lite(fifo_uint8) == startvalue+1);
UT_ASSERT(_fff_mem_level(fifo_uint8) == 1);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 3);
UT_ASSERT(_fff_is_empty(fifo_uint8) == 0);
UT_ASSERT(_fff_is_full(fifo_uint8) == 0);
UT_ASSERT(_fff_peek(fifo_uint8, 0) == startvalue+2);
// read 2 values to demonstrate overflow safety
UT_ASSERT(_fff_read(fifo_uint8) == startvalue+2);
UT_ASSERT(_fff_read(fifo_uint8) == 0x00);
UT_ASSERT(_fff_mem_level(fifo_uint8) == 0);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 4);
UT_ASSERT(_fff_is_empty(fifo_uint8) != 0);
UT_ASSERT(_fff_is_full(fifo_uint8) == 0);
_fff_reset(fifo_uint8);
}
void fifofast_test_macro_add(uint8_t startvalue)
{
__attribute__ ((unused)) volatile uint8_t* dbg_p0 = 0;
__attribute__ ((unused)) volatile uint8_t* dbg_p1 = 0;
__attribute__ ((unused)) volatile uint8_t* dbg_p2 = 0;
// add 2 values with the fast '_lite' variant (after init we know it is empty)
dbg_p0 = _fff_add_lite(fifo_uint8);
dbg_p1 = _fff_add_lite(fifo_uint8);
UT_ASSERT(dbg_p0 != 0);
UT_ASSERT(dbg_p1 != 0);
if(dbg_p0 != 0) *dbg_p0 = startvalue+0;
if(dbg_p1 != 0) *dbg_p1 = startvalue+1;
UT_ASSERT(_fff_mem_level(fifo_uint8) == 2);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 2);
UT_ASSERT(_fff_is_empty(fifo_uint8) == 0);
UT_ASSERT(_fff_is_full(fifo_uint8) == 0);
UT_ASSERT(_fff_peek(fifo_uint8, 0) == startvalue+0);
UT_ASSERT(_fff_peek(fifo_uint8, 1) == startvalue+1);
// add 3 values to demonstrate overflow safety
dbg_p0 = _fff_add(fifo_uint8);
dbg_p1 = _fff_add(fifo_uint8);
dbg_p2 = _fff_add(fifo_uint8);
UT_ASSERT(dbg_p0 != 0);
UT_ASSERT(dbg_p1 != 0);
UT_ASSERT(dbg_p2 == 0); // the fifo is full, so a null pointer must be returned
if(dbg_p0 != 0) *dbg_p0 = startvalue+2;
if(dbg_p1 != 0) *dbg_p1 = startvalue+3;
if(dbg_p2 != 0) *dbg_p2 = startvalue+4;
UT_ASSERT(_fff_mem_level(fifo_uint8) == 4);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 0);
UT_ASSERT(_fff_is_empty(fifo_uint8) == 0);
UT_ASSERT(_fff_is_full(fifo_uint8) != 0);
UT_ASSERT(_fff_peek(fifo_uint8, 0) == startvalue+0);
UT_ASSERT(_fff_peek(fifo_uint8, 1) == startvalue+1);
UT_ASSERT(_fff_peek(fifo_uint8, 2) == startvalue+2);
UT_ASSERT(_fff_peek(fifo_uint8, 3) == startvalue+3);
_fff_reset(fifo_uint8);
}
void fifofast_test_macro_remove_lite(uint8_t startvalue)
{
// fill with any data (macros have been proved to work before)
_fff_write_lite(fifo_uint8, startvalue+0);
_fff_write_lite(fifo_uint8, startvalue+1);
_fff_write_lite(fifo_uint8, startvalue+2);
_fff_write_lite(fifo_uint8, startvalue+3);
// fifo is now full
// _remove 2 (Test case: fifo full before macro)
_fff_remove_lite(fifo_uint8, 2);
UT_ASSERT(_fff_mem_level(fifo_uint8) == 2);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 2);
UT_ASSERT(_fff_is_empty(fifo_uint8) == 0);
UT_ASSERT(_fff_is_full(fifo_uint8) == 0);
UT_ASSERT(_fff_peek(fifo_uint8, 0) == startvalue+2);
UT_ASSERT(_fff_peek(fifo_uint8, 1) == startvalue+3);
// _remove 1 (Test case: fifo not full before and not empty after macro)
_fff_remove_lite(fifo_uint8, 1);
UT_ASSERT(_fff_mem_level(fifo_uint8) == 1);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 3);
UT_ASSERT(_fff_is_empty(fifo_uint8) == 0);
UT_ASSERT(_fff_is_full(fifo_uint8) == 0);
UT_ASSERT(_fff_peek(fifo_uint8, 0) == startvalue+3);
// _remove 1 (Test case: fifo empty after macro)
_fff_remove_lite(fifo_uint8, 1);
UT_ASSERT(_fff_mem_level(fifo_uint8) == 0);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 4);
UT_ASSERT(_fff_is_empty(fifo_uint8) != 0);
UT_ASSERT(_fff_is_full(fifo_uint8) == 0);
_fff_reset(fifo_uint8);
}
void fifofast_test_macro_remove(uint8_t startvalue)
{
// fill with any data (macros have been proved to work before)
_fff_write_lite(fifo_uint8, startvalue+0);
_fff_write_lite(fifo_uint8, startvalue+1);
_fff_write_lite(fifo_uint8, startvalue+2);
_fff_write_lite(fifo_uint8, startvalue+3);
// fifo is now full
// _remove 0 (Test case: amount == 0 elements)
_fff_remove(fifo_uint8, 0);
UT_ASSERT(_fff_mem_level(fifo_uint8) == 4);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 0);
UT_ASSERT(_fff_is_empty(fifo_uint8) == 0);
UT_ASSERT(_fff_is_full(fifo_uint8) != 0);
UT_ASSERT(_fff_peek(fifo_uint8, 0) == startvalue+0);
UT_ASSERT(_fff_peek(fifo_uint8, 1) == startvalue+1);
UT_ASSERT(_fff_peek(fifo_uint8, 2) == startvalue+2);
UT_ASSERT(_fff_peek(fifo_uint8, 3) == startvalue+3);
// _remove 4 (Test case: amount == _fff_mem_level() w/ fifo full)
_fff_remove(fifo_uint8, 4);
UT_ASSERT(_fff_mem_level(fifo_uint8) == 0);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 4);
UT_ASSERT(_fff_is_empty(fifo_uint8) != 0);
UT_ASSERT(_fff_is_full(fifo_uint8) == 0);
}
void fifofast_test_macro_rebase(uint8_t startvalue)
{
//////////////////////////////////////////////////////////////////////////
// Test 1: no rebase needed
// fill with any data (macros have been proved to work before)
_fff_write_lite(fifo_uint8, startvalue+0);
_fff_write_lite(fifo_uint8, startvalue+1);
_fff_write_lite(fifo_uint8, startvalue+2);
_fff_write_lite(fifo_uint8, startvalue+3);
_fff_rebase(fifo_uint8);
// Confirm it is exactly like before:
UT_ASSERT(_fff_mem_level(fifo_uint8) == 4);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 0);
UT_ASSERT(_fff_is_empty(fifo_uint8) == 0);
UT_ASSERT(_fff_is_full(fifo_uint8) != 0);
UT_ASSERT(_fff_peek(fifo_uint8, 0) == startvalue+0);
UT_ASSERT(_fff_peek(fifo_uint8, 1) == startvalue+1);
UT_ASSERT(_fff_peek(fifo_uint8, 2) == startvalue+2);
UT_ASSERT(_fff_peek(fifo_uint8, 3) == startvalue+3);
// confirm that the element 0 is at array index 0
UT_ASSERT(&_fff_peek(fifo_uint8, 0) == &fifo_uint8.data[0]);
_fff_reset(fifo_uint8);
//////////////////////////////////////////////////////////////////////////
// Test 3: move 2 elements
// fill with any data (macros have been proved to work before)
_fff_write_lite(fifo_uint8, startvalue+0);
_fff_write_lite(fifo_uint8, startvalue+1);
_fff_write_lite(fifo_uint8, startvalue+2);
_fff_write_lite(fifo_uint8, startvalue+3);
_fff_read_lite(fifo_uint8);
_fff_write_lite(fifo_uint8, startvalue+4);
_fff_rebase(fifo_uint8);
// Confirm it is exactly like before:
UT_ASSERT(_fff_mem_level(fifo_uint8) == 4);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 0);
UT_ASSERT(_fff_is_empty(fifo_uint8) == 0);
UT_ASSERT(_fff_is_full(fifo_uint8) != 0);
UT_ASSERT(_fff_peek(fifo_uint8, 0) == startvalue+1);
UT_ASSERT(_fff_peek(fifo_uint8, 1) == startvalue+2);
UT_ASSERT(_fff_peek(fifo_uint8, 2) == startvalue+3);
UT_ASSERT(_fff_peek(fifo_uint8, 3) == startvalue+4);
// confirm that the element 0 is at array index 0
UT_ASSERT(&_fff_peek(fifo_uint8, 0) == &fifo_uint8.data[0]);
_fff_reset(fifo_uint8);
//////////////////////////////////////////////////////////////////////////
// Test 3: move 2 elements
// fill with any data (macros have been proved to work before)
_fff_write_lite(fifo_uint8, startvalue+0);
_fff_write_lite(fifo_uint8, startvalue+1);
_fff_write_lite(fifo_uint8, startvalue+2);
_fff_write_lite(fifo_uint8, startvalue+3);
_fff_read_lite(fifo_uint8);
_fff_read_lite(fifo_uint8);
_fff_write_lite(fifo_uint8, startvalue+4);
_fff_write_lite(fifo_uint8, startvalue+5);
_fff_rebase(fifo_uint8);
// Confirm it is exactly like before:
UT_ASSERT(_fff_mem_level(fifo_uint8) == 4);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 0);
UT_ASSERT(_fff_is_empty(fifo_uint8) == 0);
UT_ASSERT(_fff_is_full(fifo_uint8) != 0);
UT_ASSERT(_fff_peek(fifo_uint8, 0) == startvalue+2);
UT_ASSERT(_fff_peek(fifo_uint8, 1) == startvalue+3);
UT_ASSERT(_fff_peek(fifo_uint8, 2) == startvalue+4);
UT_ASSERT(_fff_peek(fifo_uint8, 3) == startvalue+5);
// confirm that the element 0 is at array index 0
UT_ASSERT(&_fff_peek(fifo_uint8, 0) == &fifo_uint8.data[0]);
_fff_reset(fifo_uint8);
//////////////////////////////////////////////////////////////////////////
// Test 2: move 3 elements
// fill with any data (macros have been proved to work before)
_fff_write_lite(fifo_uint8, startvalue+0);
_fff_write_lite(fifo_uint8, startvalue+1);
_fff_write_lite(fifo_uint8, startvalue+2);
_fff_write_lite(fifo_uint8, startvalue+3);
_fff_read_lite(fifo_uint8);
_fff_read_lite(fifo_uint8);
_fff_read_lite(fifo_uint8);
_fff_write_lite(fifo_uint8, startvalue+4);
_fff_write_lite(fifo_uint8, startvalue+5);
_fff_write_lite(fifo_uint8, startvalue+6);
_fff_rebase(fifo_uint8);
// Confirm it is exactly like before:
UT_ASSERT(_fff_mem_level(fifo_uint8) == 4);
UT_ASSERT(_fff_mem_free(fifo_uint8) == 0);
UT_ASSERT(_fff_is_empty(fifo_uint8) == 0);
UT_ASSERT(_fff_is_full(fifo_uint8) != 0);
UT_ASSERT(_fff_peek(fifo_uint8, 0) == startvalue+3);
UT_ASSERT(_fff_peek(fifo_uint8, 1) == startvalue+4);
UT_ASSERT(_fff_peek(fifo_uint8, 2) == startvalue+5);
UT_ASSERT(_fff_peek(fifo_uint8, 3) == startvalue+6);
// confirm that the element 0 is at array index 0
UT_ASSERT(&_fff_peek(fifo_uint8, 0) == &fifo_uint8.data[0]);
_fff_reset(fifo_uint8);
}
//////////////////////////////////////////////////////////////////////////
// Test Functions
//////////////////////////////////////////////////////////////////////////
void fifofast_test_func_initial(fff_proto_t* fifo)
{
//UT_ASSERT(fff_mem_depth(fifo) == 4); // constant
UT_ASSERT(fff_mem_mask(fifo) == 3); // constant = 0b11
UT_ASSERT(fff_mem_level(fifo) == 0);
UT_ASSERT(fff_mem_free(fifo) == 4);
UT_ASSERT(fff_is_empty(fifo) != 0);
UT_ASSERT(fff_is_full(fifo) == 0);
}
void fifofast_test_func_write(fff_proto_t* fifo, uint8_t startvalue)
{
// add 2 values with the fast '_lite' variant (after init we know it is empty)
// use unusual values (NOT 0, 1, 2 ...) to decrease the likelihood of false positives
uint8_t tmp0 = startvalue+0;
uint8_t tmp1 = startvalue+1;
fff_write_lite(fifo, &tmp0);
fff_write_lite(fifo, &tmp1);
UT_ASSERT(fff_mem_level(fifo) == 2);
UT_ASSERT(fff_mem_free(fifo) == 2);
UT_ASSERT(fff_is_empty(fifo) == 0);
UT_ASSERT(fff_is_full(fifo) == 0);
UT_ASSERT(*(uint8_t*)fff_peek_read(fifo, 0) == startvalue+0);
UT_ASSERT(*(uint8_t*)fff_peek_read(fifo, 1) == startvalue+1);
// add 3 values to demonstrate overflow safety
uint8_t tmp2 = startvalue+2;
uint8_t tmp3 = startvalue+3;
uint8_t tmp4 = startvalue+4;
fff_write(fifo, &tmp2);
fff_write(fifo, &tmp3);
fff_write(fifo, &tmp4);
UT_ASSERT(fff_mem_level(fifo) == 4);
UT_ASSERT(fff_mem_free(fifo) == 0);
UT_ASSERT(fff_is_empty(fifo) == 0);
UT_ASSERT(fff_is_full(fifo) != 0);
UT_ASSERT(*(uint8_t*)fff_peek_read(fifo, 0) == startvalue+0);
UT_ASSERT(*(uint8_t*)fff_peek_read(fifo, 1) == startvalue+1);
UT_ASSERT(*(uint8_t*)fff_peek_read(fifo, 2) == startvalue+2);
UT_ASSERT(*(uint8_t*)fff_peek_read(fifo, 3) == startvalue+3);
fff_reset(fifo);
// Test reset once only
UT_ASSERT(fff_mem_level(fifo) == 0);
UT_ASSERT(fff_mem_free(fifo) == 4);
UT_ASSERT(fff_is_empty(fifo) != 0);
UT_ASSERT(fff_is_full(fifo) == 0);
}
void fifofast_test_func_peek(fff_proto_t* fifo, uint8_t startvalue)
{
uint8_t tmp0 = startvalue+0;
uint8_t tmp1 = startvalue+1;
uint8_t tmp2 = startvalue+2;
fff_write_lite(fifo, &tmp0);
fff_write_lite(fifo, &tmp1);
fff_write_lite(fifo, &tmp2);
// modify existing value (index 0 and 2) with _fff_peek()
uint8_t tmp3 = startvalue+3;
uint8_t tmp4 = startvalue+4;
fff_peek_write(fifo, 0, &tmp3);
fff_peek_write(fifo, 2, &tmp4);
UT_ASSERT(fff_mem_level(fifo) == 3);
UT_ASSERT(fff_mem_free(fifo) == 1);
UT_ASSERT(fff_is_empty(fifo) == 0);
UT_ASSERT(fff_is_full(fifo) == 0);
UT_ASSERT(*(uint8_t*)fff_peek_read(fifo, 0) == startvalue+3);
UT_ASSERT(*(uint8_t*)fff_peek_read(fifo, 1) == startvalue+1);
UT_ASSERT(*(uint8_t*)fff_peek_read(fifo, 2) == startvalue+4);
// demonstrate "out of bounds" safety (no over-read/ over-write possible)
UT_ASSERT(*(uint8_t*)fff_peek_read(fifo, 4) == startvalue+3);
fff_reset(fifo);
}
void fifofast_test_func_remove_lite(fff_proto_t* fifo, uint8_t startvalue)
{
// fill with any data (macros have been proved to work before)
uint8_t tmp0 = startvalue+0;
uint8_t tmp1 = startvalue+1;
uint8_t tmp2 = startvalue+2;
uint8_t tmp3 = startvalue+3;
fff_write_lite(fifo, &tmp0);
fff_write_lite(fifo, &tmp1);
fff_write_lite(fifo, &tmp2);
fff_write_lite(fifo, &tmp3);
// fifo is now full
// _remove 2 (Test case: fifo full before macro)
fff_remove_lite(fifo, 2);
UT_ASSERT(fff_mem_level(fifo) == 2);
UT_ASSERT(fff_mem_free(fifo) == 2);
UT_ASSERT(fff_is_empty(fifo) == 0);
UT_ASSERT(fff_is_full(fifo) == 0);
UT_ASSERT(*(uint8_t*)fff_peek_read(fifo, 0) == startvalue+2);
UT_ASSERT(*(uint8_t*)fff_peek_read(fifo, 1) == startvalue+3);
// _remove 1 (Test case: fifo not full before and not empty after macro)
fff_remove_lite(fifo, 1);
UT_ASSERT(fff_mem_level(fifo) == 1);
UT_ASSERT(fff_mem_free(fifo) == 3);
UT_ASSERT(fff_is_empty(fifo) == 0);
UT_ASSERT(fff_is_full(fifo) == 0);
UT_ASSERT(*(uint8_t*)fff_peek_read(fifo, 0) == startvalue+3);
// _remove 1 (Test case: fifo empty after macro)
fff_remove_lite(fifo, 1);
UT_ASSERT(fff_mem_level(fifo) == 0);
UT_ASSERT(fff_mem_free(fifo) == 4);
UT_ASSERT(fff_is_empty(fifo) != 0);
UT_ASSERT(fff_is_full(fifo) == 0);
fff_reset(fifo);
}
void fifofast_test_func_remove(fff_proto_t* fifo, uint8_t startvalue)
{
// fill with any data (macros have been proved to work before)
uint8_t tmp0 = startvalue+0;
uint8_t tmp1 = startvalue+1;
uint8_t tmp2 = startvalue+2;
uint8_t tmp3 = startvalue+3;
fff_write_lite(fifo, &tmp0);
fff_write_lite(fifo, &tmp1);
fff_write_lite(fifo, &tmp2);
fff_write_lite(fifo, &tmp3);
// fifo is now full
// _remove 0 (Test case: amount == 0 elements)
fff_remove(fifo, 0);
UT_ASSERT(fff_mem_level(fifo) == 4);
UT_ASSERT(fff_mem_free(fifo) == 0);
UT_ASSERT(fff_is_empty(fifo) == 0);
UT_ASSERT(fff_is_full(fifo) != 0);
UT_ASSERT(*(uint8_t*)fff_peek_read(fifo, 0) == startvalue+0);
UT_ASSERT(*(uint8_t*)fff_peek_read(fifo, 1) == startvalue+1);
UT_ASSERT(*(uint8_t*)fff_peek_read(fifo, 2) == startvalue+2);
UT_ASSERT(*(uint8_t*)fff_peek_read(fifo, 3) == startvalue+3);
// _remove 4 (Test case: amount == _fff_mem_level() w/ fifo full)
fff_remove(fifo, 4);
UT_ASSERT(fff_mem_level(fifo) == 0);
UT_ASSERT(fff_mem_free(fifo) == 4);
UT_ASSERT(fff_is_empty(fifo) != 0);
UT_ASSERT(fff_is_full(fifo) == 0);
}