projects
/
gnulib.git
/ blobdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
|
commitdiff
|
tree
raw
|
inline
| side by side
Update
[gnulib.git]
/
tests
/
test-fwriting.c
diff --git
a/tests/test-fwriting.c
b/tests/test-fwriting.c
index
00b6870
..
a162130
100644
(file)
--- a/
tests/test-fwriting.c
+++ b/
tests/test-fwriting.c
@@
-21,9
+21,19
@@
#include "fwriting.h"
#include "fwriting.h"
+#include <stdio.h>
#include <stdlib.h>
#include <stdlib.h>
-#define ASSERT(expr) if (!(expr)) abort ();
+#define ASSERT(expr) \
+ do \
+ { \
+ if (!(expr)) \
+ { \
+ fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
+ abort (); \
+ } \
+ } \
+ while (0)
#define TESTFILE "t-fwriting.tmp"
#define TESTFILE "t-fwriting.tmp"
@@
-73,6
+83,7
@@
main ()
fwriting is only deterministic after input or output, but this
test case should be portable even on open, after reposition, and
after fflush. */
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;
fp = fopen (TESTFILE, "r+");
if (fp == NULL)
goto skip;
@@
-91,12
+102,14
@@
main ()
if (fseek (fp, 0, SEEK_CUR) != 0)
goto skip;
ASSERT (!fwriting (fp));
if (fseek (fp, 0, SEEK_CUR) != 0)
goto skip;
ASSERT (!fwriting (fp));
- if (fputc ('
z', fp) != 'z
')
+ if (fputc ('
x', fp) != 'x
')
goto skip;
ASSERT (fwriting (fp));
if (fseek (fp, 0, SEEK_END))
goto skip;
goto skip;
ASSERT (fwriting (fp));
if (fseek (fp, 0, SEEK_END))
goto skip;
- /* fwriting (fp) is undefined here, but freading (fp) is false. */
+ /* 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;
if (fclose (fp))
goto skip;
@@
-105,6
+118,7
@@
main ()
fwriting is only deterministic after input or output, but this
test case should be portable even on open, after reposition, and
after fflush. */
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;
fp = fopen (TESTFILE, "r+");
if (fp == NULL)
goto skip;
@@
-120,7
+134,7
@@
main ()
ASSERT (!fwriting (fp));
fflush (fp);
ASSERT (!fwriting (fp));
ASSERT (!fwriting (fp));
fflush (fp);
ASSERT (!fwriting (fp));
- if (fgetc (fp) != '
a
')
+ if (fgetc (fp) != '
x
')
goto skip;
ASSERT (!fwriting (fp));
/* This fseek call is necessary when switching from reading to writing.
goto skip;
ASSERT (!fwriting (fp));
/* This fseek call is necessary when switching from reading to writing.
@@
-133,7
+147,9
@@
main ()
ASSERT (fwriting (fp));
if (fseek (fp, 0, SEEK_END))
goto skip;
ASSERT (fwriting (fp));
if (fseek (fp, 0, SEEK_END))
goto skip;
- /* fwriting (fp) is undefined here, but freading (fp) is false. */
+ /* 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;
if (fclose (fp))
goto skip;