/*-*- 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.                                                │
╚─────────────────────────────────────────────────────────────────────────────*/

TEST(REPLACESTR, demo) {
  EXPECT_STREQ(S("hello friends"),
               REPLACESTR(S("hello world"), S("world"), S("friends")));
  EXPECT_STREQ(S("bbbbbbbb"), REPLACESTR(S("aaaa"), S("a"), S("bb")));
}

TEST(REPLACESTR, emptyString) {
  EXPECT_STREQ(S(""), REPLACESTR(S(""), S("x"), S("y")));
}

TEST(REPLACESTR, emptyNeedle) {
  EXPECT_EQ(NULL, REPLACESTR(S("a"), S(""), S("a")));
  EXPECT_EQ(EINVAL, errno);
}

TEST(REPLACESTR, needleInReplacement_doesntExplode) {
  EXPECT_STREQ(S("xxxxxxx"), REPLACESTR(S("x"), S("x"), S("xxxxxxx")));
}