grpc1.45.2/third_party/libuv/test/test-get-currentexe.c

/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
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 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * IN THE SOFTWARE.
 */

#include "uv.h"
#include "task.h"
#include <string.h>

#ifndef _WIN32
#include <unistd.h>
#endif

#define PATHMAX 4096
extern char executable_path[];

TEST_IMPL(get_currentexe) {
  char buffer[PATHMAX];
  char path[PATHMAX];
  size_t size;
  char* match;
  int r;

  size = sizeof(buffer) / sizeof(buffer[0]);
  r = uv_exepath(buffer, &size);
  ASSERT(!r);

#ifdef _WIN32
  snprintf(path, sizeof(path), "%s", executable_path);
#else
  ASSERT(NULL != realpath(executable_path, path));
#endif

  match = strstr(buffer, path);
  /* Verify that the path returned from uv_exepath is a subdirectory of
   * executable_path.
   */
  ASSERT(match && !strcmp(match, path));
  ASSERT(size == strlen(buffer));

  /* Negative tests */
  size = sizeof(buffer) / sizeof(buffer[0]);
  r = uv_exepath(NULL, &size);
  ASSERT(r == UV_EINVAL);

  r = uv_exepath(buffer, NULL);
  ASSERT(r == UV_EINVAL);

  size = 0;
  r = uv_exepath(buffer, &size);
  ASSERT(r == UV_EINVAL);

  memset(buffer, -1, sizeof(buffer));

  size = 1;
  r = uv_exepath(buffer, &size);
  ASSERT(r == 0);
  ASSERT(size == 0);
  ASSERT(buffer[0] == '\0');

  memset(buffer, -1, sizeof(buffer));

  size = 2;
  r = uv_exepath(buffer, &size);
  ASSERT(r == 0);
  ASSERT(size == 1);
  ASSERT(buffer[0] != '\0');
  ASSERT(buffer[1] == '\0');

  return 0;
}