/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * The contents of this file are subject to the Mozilla Public License Version
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 * The Original Code is libguac.
 *
 * The Initial Developer of the Original Code is
 * Michael Jumper.
 * Portions created by the Initial Developer are Copyright (C) 2010
 * the Initial Developer. All Rights Reserved.
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#include <CUnit/Basic.h>

#include "pool.h"
#include "util_suite.h"

#define UNSEEN          0 
#define SEEN_PHASE_1    1
#define SEEN_PHASE_2    2

#define POOL_SIZE 128

void test_guac_pool() {

    guac_pool* pool;

    int i;
    int seen[POOL_SIZE] = {0};
    int value;

    /* Get pool */
    pool = guac_pool_alloc(POOL_SIZE);
    CU_ASSERT_PTR_NOT_NULL_FATAL(pool);

    /* Fill pool */
    for (i=0; i<POOL_SIZE; i++) {

        /* Get value from pool */
        value = guac_pool_next_int(pool);

        /* Value should be within pool size */
        CU_ASSERT_FATAL(value >= 0);
        CU_ASSERT_FATAL(value <  POOL_SIZE);

        /* This should be an integer we have not seen yet */
        CU_ASSERT_EQUAL(UNSEEN, seen[value]);
        seen[value] = SEEN_PHASE_1;

        /* Return value to pool */
        guac_pool_free_int(pool, value);

    }

    /* Now that pool is filled, we should get ONLY previously seen integers */
    for (i=0; i<POOL_SIZE; i++) {

        /* Get value from pool */
        value = guac_pool_next_int(pool);

        /* Value should be within pool size */
        CU_ASSERT_FATAL(value >= 0);
        CU_ASSERT_FATAL(value <  POOL_SIZE);

        /* This should be an integer we have seen already */
        CU_ASSERT_EQUAL(SEEN_PHASE_1, seen[value]);
        seen[value] = SEEN_PHASE_2;

    }

    /* Pool is filled to minimum now. Next value should be equal to size. */
    value = guac_pool_next_int(pool);

    CU_ASSERT_EQUAL(POOL_SIZE, value);

    /* Free pool */
    guac_pool_free(pool);

}