third_party/nacl-tests/environment_variables/passthrough_test.c

/*
 * Copyright 2015 The Native Client Authors. All rights reserved.
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "native_client/src/include/nacl_assert.h"

int main(int argc, char *argv[], char *envp[]) {
  const char *env_var = getenv("FOO");
  if (strcmp(argv[1], "with_p") == 0) {
    ASSERT_NE_MSG(env_var, NULL, "expected FOO=bar");
    ASSERT_EQ_MSG(strcmp(env_var, "bar"), 0, "error: expected FOO=bar");
  } else if (strcmp(argv[1], "with_p_override") == 0) {
    int nfound = 0;
    const char *last_found = NULL;
    for (char **ep = envp; *ep != NULL; ++ep) {
      if (strncmp(*ep, "FOO=", 4) == 0) {
        ++nfound;
        last_found = *ep + 4;
      }
    }
    ASSERT_EQ_MSG(nfound, 1, "expected exactly one FOO variable");
    ASSERT_EQ_MSG(last_found, env_var,
                  "expected getenv(\"FOO\") to find FOO");
    ASSERT_EQ_MSG(strcmp(env_var, "bar"), 0, "error: expected FOO=bar");
  } else {
    ASSERT_EQ_MSG(env_var, NULL, "FOO set in environment");
  }
  return 0;
}