#include <stdlib.h>

#include <assert.h>

#include <stdio.h>

#include "queue.h"

void test_queue_create() {

struct _queue * q = queue_create(sizeof(int));

assert ( q != NULL );

assert ( q->head == NULL );

assert ( q->tail == NULL );

assert ( q->n_items == 0 );

queue_remove(q);

}

void test_queue_enque() {

struct _queue * q = queue_create(sizeof(int));

int i, size = 3;

int items[3] = {0, 1, 2};

int item;

for (i=0; i<size; ++i) {

assert( q->n_items == i );

queue_enque(q, &items[i]);

}

queue_deque(q, &item);

assert ( item == 0);

assert ( q->n_items == 2);

queue_deque(q, &item);

assert ( item == 1);

assert ( q->n_items == 1);

queue_deque(q, &item);

assert ( item == 2);

assert ( q->n_items == 0);

assert ( NULL == queue_deque(q, &item) );

assert ( NULL == queue_deque(q, &item) );

queue_remove(q);

}

int main() {

test_queue_create();

test_queue_enque();

}