text: /*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
  │vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
  ╞══════════════════════════════════════════════════════════════════════════════╡
  │ Copyright 2020 Justine Alexandra Roberts Tunney                              │
  │                                                                              │
  │ Permission to use, copy, modify, and/or distribute this software for         │
  │ any purpose with or without fee is hereby granted, provided that the         │
  │ above copyright notice and this permission notice appear in all copies.      │
  │                                                                              │
  │ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
  │ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
  │ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
  │ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
  │ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
  │ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
  │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
  │ PERFORMANCE OF THIS SOFTWARE.                                                │
  ╚─────────────────────────────────────────────────────────────────────────────*/
  #include "libc/calls/ntspawn.h"
  #include "libc/runtime/gc.h"
  #include "libc/testlib/testlib.h"
  
  char16_t envvars[ARG_MAX];
  
  TEST(mkntenvblock, emptyList_onlyOutputsDoubleNulStringTerminator) {
    char *envp[] = {NULL};
    ASSERT_NE(-1, mkntenvblock(envvars, envp, NULL));
    ASSERT_BINEQ(u"  ", envvars);
  }
  
  TEST(mkntenvblock, envp_becomesSortedDoubleNulTerminatedUtf16String) {
    char *envp[] = {"u=b", "c=d", "韩=非", "uh=d", "hduc=d", NULL};
    ASSERT_NE(-1, mkntenvblock(envvars, envp, NULL));
    ASSERT_BINEQ(u"c = d   "
                 u"h d u c = d   "
                 u"u = b   "
                 u"u h = d   "
                 u"Θù= ^ù  "
                 u"  ",
                 envvars);
  }
  
  TEST(mkntenvblock, extraVar_getsAdded) {
    char *envp[] = {"u=b", "c=d", "韩=非", "uh=d", "hduc=d", NULL};
    ASSERT_NE(-1, mkntenvblock(envvars, envp, "a=a"));
    ASSERT_BINEQ(u"a = a   "
                 u"c = d   "
                 u"h d u c = d   "
                 u"u = b   "
                 u"u h = d   "
                 u"Θù= ^ù  "
                 u"  ",
                 envvars);
  }
  