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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* A regression test for bug 794316 */
#include <stdio.h>
#include <stdlib.h>
#include "prio.h"
static PRIOMethods dummyMethods;
int main()
{
PRDescIdentity topId, middleId, bottomId;
PRFileDesc *top, *middle, *bottom;
PRFileDesc *fd;
topId = PR_GetUniqueIdentity("top");
middleId = PR_GetUniqueIdentity("middle");
bottomId = PR_GetUniqueIdentity("bottom");
top = PR_CreateIOLayerStub(topId, &dummyMethods);
middle = PR_CreateIOLayerStub(middleId, &dummyMethods);
bottom = PR_CreateIOLayerStub(bottomId, &dummyMethods);
fd = bottom;
PR_PushIOLayer(fd, PR_TOP_IO_LAYER, middle);
PR_PushIOLayer(fd, PR_TOP_IO_LAYER, top);
top = fd;
middle = top->lower;
bottom = middle->lower;
/* Verify that the higher pointers are correct. */
if (middle->higher != top) {
fprintf(stderr, "middle->higher is wrong\n");
fprintf(stderr, "FAILED\n");
exit(1);
}
if (bottom->higher != middle) {
fprintf(stderr, "bottom->higher is wrong\n");
fprintf(stderr, "FAILED\n");
exit(1);
}
top = PR_PopIOLayer(fd, topId);
top->dtor(top);
middle = fd;
bottom = middle->lower;
/* Verify that the higher pointer is correct. */
if (bottom->higher != middle) {
fprintf(stderr, "bottom->higher is wrong\n");
fprintf(stderr, "FAILED\n");
exit(1);
}
middle = PR_PopIOLayer(fd, middleId);
middle->dtor(middle);
if (fd->identity != bottomId) {
fprintf(stderr, "The bottom layer has the wrong identity\n");
fprintf(stderr, "FAILED\n");
exit(1);
}
fd->dtor(fd);
printf("PASS\n");
return 0;
}
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