cosmopolitan/test/libc/stdio/vappendf_test.c

/*-*- 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 2021 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.      │
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│ 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/stdio/append.internal.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/testlib.h"

TEST(vappendf, test) {
  char *b = 0;
  appendf(&b, "hello ");
  EXPECT_EQ(6, appendz(b).i);
  EXPECT_EQ(6, strlen(b));  // guarantees nul terminator
  appendf(&b, " world\n");
  EXPECT_EQ(13, appendz(b).i);
  EXPECT_EQ(13, strlen(b));
  appendd(&b, "\0", 1);  // supports binary
  EXPECT_EQ(14, appendz(b).i);
  EXPECT_EQ(13, strlen(b));
  EXPECT_EQ(0, b[13]);
  EXPECT_EQ(0, b[14]);
  EXPECT_STREQ("hello  world\n", b);
  free(b);
}

TEST(vappends, test) {
  char *b = 0;
  appends(&b, "hello ");
  EXPECT_EQ(6, appendz(b).i);
  EXPECT_EQ(6, strlen(b));  // guarantees nul terminator
  appends(&b, " world\n");
  EXPECT_EQ(13, appendz(b).i);
  EXPECT_EQ(13, strlen(b));
  EXPECT_EQ(0, b[13]);
  EXPECT_STREQ("hello  world\n", b);
  free(b);
}

BENCH(vappendf, bench) {
  const char t[] = {0};
  char *b = 0;
  EZBENCH2("appendf", donothing, appendf(&b, "1"));
  free(b), b = 0;
  EZBENCH2("appends", donothing, appends(&b, "1"));
  free(b), b = 0;
  EZBENCH2("appendd", donothing, appendd(&b, t, 1));
  free(b);
}