guacamole-spice-protocol/tests/client/buffer_pool.c

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#include <CUnit/Basic.h>

#include "client.h"
#include "client_suite.h"

void test_buffer_pool() {

    guac_client* client;

    int i;
    int seen[GUAC_BUFFER_POOL_INITIAL_SIZE] = {0};

    guac_layer* layer;

    /* Get client */
    client = guac_client_alloc();
    CU_ASSERT_PTR_NOT_NULL_FATAL(client);

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

        /* Allocate and throw away a layer (should not disturb buffer alloc) */
        CU_ASSERT_PTR_NOT_NULL_FATAL(guac_client_alloc_layer(client));

        layer = guac_client_alloc_buffer(client);

        /* Index should be within pool size */
        CU_ASSERT_PTR_NOT_NULL_FATAL(layer);
        CU_ASSERT_FATAL(layer->index < 0);
        CU_ASSERT_FATAL(layer->index >= -GUAC_BUFFER_POOL_INITIAL_SIZE);

        /* This should be a layer we have not seen yet */
        CU_ASSERT_FALSE(seen[-layer->index - 1]);
        seen[-layer->index - 1] = 1;

        guac_client_free_buffer(client, layer);

    }

    /* Now that pool is filled, we should get a previously seen layer */
    layer = guac_client_alloc_buffer(client);

    CU_ASSERT_FATAL(layer->index < 0);
    CU_ASSERT_FATAL(layer->index >= -GUAC_BUFFER_POOL_INITIAL_SIZE);
    CU_ASSERT_TRUE(seen[-layer->index - 1]);

    /* Free client */
    guac_client_free(client);

}