The Tor Browser: nsprpub/pr/tests/pushtop.c@ca08bd8f51b2

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 /* A regression test for bug 794316 */

     8 #include <stdio.h>

     9 #include <stdlib.h>

    11 #include "prio.h"

    13 static PRIOMethods dummyMethods;

    15 int main()

    16 {

    17     PRDescIdentity topId, middleId, bottomId;

    18     PRFileDesc *top, *middle, *bottom;

    19     PRFileDesc *fd;

    21     topId = PR_GetUniqueIdentity("top");

    22     middleId = PR_GetUniqueIdentity("middle");

    23     bottomId = PR_GetUniqueIdentity("bottom");

    25     top = PR_CreateIOLayerStub(topId, &dummyMethods);

    26     middle = PR_CreateIOLayerStub(middleId, &dummyMethods);

    27     bottom = PR_CreateIOLayerStub(bottomId, &dummyMethods);

    29     fd = bottom;

    30     PR_PushIOLayer(fd, PR_TOP_IO_LAYER, middle);

    31     PR_PushIOLayer(fd, PR_TOP_IO_LAYER, top);

    33     top = fd;

    34     middle = top->lower;

    35     bottom = middle->lower;

    37     /* Verify that the higher pointers are correct. */

    38     if (middle->higher != top) {

    39         fprintf(stderr, "middle->higher is wrong\n");

    40         fprintf(stderr, "FAILED\n");

    41         exit(1);

    42     }

    43     if (bottom->higher != middle) {

    44         fprintf(stderr, "bottom->higher is wrong\n");

    45         fprintf(stderr, "FAILED\n");

    46         exit(1);

    47     }

    49     top = PR_PopIOLayer(fd, topId);

    50     top->dtor(top);

    52     middle = fd;

    53     bottom = middle->lower;

    55     /* Verify that the higher pointer is correct. */

    56     if (bottom->higher != middle) {

    57         fprintf(stderr, "bottom->higher is wrong\n");

    58         fprintf(stderr, "FAILED\n");

    59         exit(1);

    60     }

    62     middle = PR_PopIOLayer(fd, middleId);

    63     middle->dtor(middle);

    64     if (fd->identity != bottomId) {

    65         fprintf(stderr, "The bottom layer has the wrong identity\n");

    66         fprintf(stderr, "FAILED\n");

    67         exit(1);

    68     }

    69     fd->dtor(fd);

    71     printf("PASS\n");

    72     return 0;

    73 }

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