test-gethostname.c

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/* Copyright libuv contributors. All rights reserved.
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 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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#include "uv.h"
#include "task.h"
#include <string.h>
 
TEST_IMPL(gethostname) {
  char buf[UV_MAXHOSTNAMESIZE];
  size_t size;
  size_t enobufs_size;
  int r;
 
  /* Reject invalid inputs */
  size = 1;
  r = uv_os_gethostname(NULL, &size);
  ASSERT(r == UV_EINVAL);
  r = uv_os_gethostname(buf, NULL);
  ASSERT(r == UV_EINVAL);
  size = 0;
  r = uv_os_gethostname(buf, &size);
  ASSERT(r == UV_EINVAL);
 
  /* Return UV_ENOBUFS if the buffer cannot hold the hostname */
  enobufs_size = 1;
  buf[0] = '\0';
  r = uv_os_gethostname(buf, &enobufs_size);
  ASSERT(r == UV_ENOBUFS);
  ASSERT(buf[0] == '\0');
  ASSERT(enobufs_size > 1);
 
  /* Successfully get the hostname */
  size = UV_MAXHOSTNAMESIZE;
  r = uv_os_gethostname(buf, &size);
  ASSERT(r == 0);
  ASSERT(size > 0 && size == strlen(buf));
  ASSERT(size + 1 == enobufs_size);
 
  return 0;
}