Mercurial > gnulib
view tests/test-fwriting.c @ 40226:5b87a9bf7240
uninorm tests: Free allocated memory.
* tests/uninorm/test-u32-normalize-big.h
(struct normalization_test_file): Remove 'const' from allocated member.
(free_normalization_test_file): New declaration.
* tests/uninorm/test-u32-normalize-big.c (test_other): Free allocated
memory.
(free_normalization_test_file): New function.
* tests/uninorm/test-u32-nfc-big.c (main): Free allocated
'struct normalization_test_file' contents.
* tests/uninorm/test-u32-nfd-big.c (main): Likewise.
* tests/uninorm/test-u32-nfkc-big.c (main): Likewise.
* tests/uninorm/test-u32-nfkd-big.c (main): Likewise.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sun, 10 Mar 2019 15:14:01 +0100 |
parents | b06060465f09 |
children |
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/* Test of fwriting() function. Copyright (C) 2007-2019 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. */ /* Written by Bruno Haible <bruno@clisp.org>, 2007. */ #include <config.h> /* None of the files accessed by this test are large, so disable the fseek link warning if we are not using the gnulib fseek module. */ #define _GL_NO_LARGE_FILES #include "fwriting.h" #include <stdio.h> #include "macros.h" #define TESTFILE "t-fwriting.tmp" int main () { FILE *fp; /* Create a file with some contents. Write-only file is always writing. */ fp = fopen (TESTFILE, "w"); if (fp == NULL) goto skip; ASSERT (fwriting (fp)); if (fwrite ("foobarsh", 1, 8, fp) < 8) goto skip; ASSERT (fwriting (fp)); if (fclose (fp)) goto skip; /* Open it in read-only mode. Read-only file is never writing. */ fp = fopen (TESTFILE, "r"); if (fp == NULL) goto skip; ASSERT (!fwriting (fp)); if (fgetc (fp) != 'f') goto skip; ASSERT (!fwriting (fp)); if (fseek (fp, 2, SEEK_CUR)) goto skip; ASSERT (!fwriting (fp)); if (fgetc (fp) != 'b') goto skip; ASSERT (!fwriting (fp)); fflush (fp); ASSERT (!fwriting (fp)); if (fgetc (fp) != 'a') goto skip; ASSERT (!fwriting (fp)); if (fseek (fp, 0, SEEK_END)) goto skip; ASSERT (!fwriting (fp)); if (fclose (fp)) goto skip; /* Open it in read-write mode. POSIX requires a reposition (fseek, fsetpos, rewind) or fflush when transitioning from write to read, fwriting is only deterministic after input or output, but this test case should be portable even on open, after reposition, and after fflush. */ /* First a scenario with only fgetc, fseek, fputc. */ fp = fopen (TESTFILE, "r+"); if (fp == NULL) goto skip; ASSERT (!fwriting (fp)); if (fgetc (fp) != 'f') goto skip; ASSERT (!fwriting (fp)); if (fseek (fp, 2, SEEK_CUR)) goto skip; ASSERT (!fwriting (fp)); if (fgetc (fp) != 'b') goto skip; ASSERT (!fwriting (fp)); /* This fseek call is necessary when switching from reading to writing. See the description of fopen(), ISO C 99 7.19.5.3.(6). */ if (fseek (fp, 0, SEEK_CUR) != 0) goto skip; ASSERT (!fwriting (fp)); if (fputc ('x', fp) != 'x') goto skip; ASSERT (fwriting (fp)); if (fseek (fp, 0, SEEK_END)) goto skip; /* freading (fp) is undefined here, because on some implementations (e.g. glibc) fseek causes a buffer to be read. fwriting (fp) is undefined as well. */ if (fclose (fp)) goto skip; /* Open it in read-write mode. POSIX requires a reposition (fseek, fsetpos, rewind) or fflush when transitioning from write to read, fwriting is only deterministic after input or output, but this test case should be portable even on open, after reposition, and after fflush. */ /* Here a scenario that includes fflush. */ fp = fopen (TESTFILE, "r+"); if (fp == NULL) goto skip; ASSERT (!fwriting (fp)); if (fgetc (fp) != 'f') goto skip; ASSERT (!fwriting (fp)); if (fseek (fp, 2, SEEK_CUR)) goto skip; ASSERT (!fwriting (fp)); if (fgetc (fp) != 'b') goto skip; ASSERT (!fwriting (fp)); fflush (fp); ASSERT (!fwriting (fp)); if (fgetc (fp) != 'x') goto skip; ASSERT (!fwriting (fp)); /* This fseek call is necessary when switching from reading to writing. See the description of fopen(), ISO C 99 7.19.5.3.(6). */ if (fseek (fp, 0, SEEK_CUR) != 0) goto skip; ASSERT (!fwriting (fp)); if (fputc ('z', fp) != 'z') goto skip; ASSERT (fwriting (fp)); if (fseek (fp, 0, SEEK_END)) goto skip; /* freading (fp) is undefined here, because on some implementations (e.g. glibc) fseek causes a buffer to be read. fwriting (fp) is undefined as well. */ if (fclose (fp)) goto skip; /* Open it in append mode. */ fp = fopen (TESTFILE, "a"); if (fp == NULL) goto skip; ASSERT (fwriting (fp)); if (fwrite ("bla", 1, 3, fp) < 3) goto skip; ASSERT (fwriting (fp)); if (fclose (fp)) goto skip; return 0; skip: fprintf (stderr, "Skipping test: file operations failed.\n"); return 77; }