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Fix bugs and make code tinier

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- Fixed bug where stdio eof wasn't being sticky
- Fixed bug where fseeko() wasn't clearing eof state
- Removed assert() usage from libc favoring _unassert() / _npassert()
This commit is contained in:
Justine Tunney 2022-10-09 22:38:28 -07:00
parent 9b7c8db846
commit d5910e2673
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GPG key ID: BE714B4575D6E328
115 changed files with 510 additions and 290 deletions
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test/libc/stdio/fread_test.c Normal file
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/*-*- 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 2022 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/calls.h"
#include "libc/stdio/stdio.h"
#include "libc/testlib/testlib.h"
char testlib_enable_tmp_setup_teardown;
TEST(fread, eofIsSticky) {
FILE *fo, *fi;
char b[10] = "hello";
ASSERT_NE(NULL, (fo = fopen("foo", "w")));
ASSERT_NE(NULL, (fi = fopen("foo", "r")));
ASSERT_EQ(0, fread(b, 1, 8, fi));
ASSERT_TRUE(feof(fi));
ASSERT_EQ(8, fwrite(b, 1, 8, fo));
ASSERT_EQ(0, fflush(fo));
ASSERT_EQ(0, fread(b, 1, 8, fi));
ASSERT_TRUE(feof(fi));
clearerr(fi);
ASSERT_EQ(8, fread(b, 1, 10, fi));
ASSERT_TRUE(feof(fi));
ASSERT_EQ(0, fseek(fi, 0, SEEK_SET));
ASSERT_FALSE(feof(fi));
ASSERT_EQ(0, fclose(fi));
ASSERT_EQ(0, fclose(fo));
}
TEST(fread, seekWithBuffer) {
FILE *f;
char b[8] = "hellosup";
char c[8] = {0};
char d[8] = {0};
ASSERT_NE(NULL, (f = fopen("foo", "w")));
ASSERT_EQ(8, fwrite(b, 1, 8, f));
ASSERT_EQ(0, fclose(f));
ASSERT_NE(NULL, (f = fopen("foo", "r")));
ASSERT_EQ(5, fread(c, 1, 5, f));
ASSERT_STREQ("hello", c);
ASSERT_EQ(0, fseek(f, 1, SEEK_SET));
ASSERT_EQ(5, fread(d, 1, 5, f));
ASSERT_STREQ("ellos", d);
ASSERT_EQ(0, fclose(f));
}