mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 03:53:33 +00:00
67 lines
2.8 KiB
C
67 lines
2.8 KiB
C
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/stdio/stdio.h"
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#include "libc/testlib/testlib.h"
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/*
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* This test was contributed by @ahgamut
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* https://github.com/jart/cosmopolitan/issues/61#issuecomment-792214575
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*/
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char testlib_enable_tmp_setup_teardown;
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int writefile(const char* filename) {
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int stat = 0;
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FILE* fp = fopen(filename, "w");
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stat = fputs("cosmopolitan libc\n", fp);
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fclose(fp);
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return stat;
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}
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int readfile(const char* filename) {
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int stat = 0;
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char buf1[30];
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char buf2[30];
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FILE *fp1, *fp2;
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fp1 = fopen(filename, "r");
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if (!fp1) {
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printf("failed to read %s in r\n", filename);
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return 1;
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}
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buf1[0] = fgetc(fp1);
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buf1[1] = '\0';
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fp2 = freopen(filename, "rb", fp1);
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if (!fp2) {
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printf("failed to read %s in rb\n", filename);
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return 1;
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}
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stat = fread(buf2, sizeof(buf2[0]), 20, fp2);
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ASSERT_EQ(18, stat);
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buf2[stat] = '\0';
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fclose(fp2);
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ASSERT_STREQ("c", buf1);
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ASSERT_STREQ("cosmopolitan libc\n", buf2);
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return 0;
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}
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TEST(freopen, test) {
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writefile("file.txt");
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readfile("file.txt");
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}
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