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sysfs_rps: Add negative test case for bad values

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Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
This commit is contained in:
Ben Widawsky 2012-10-15 10:05:56 -07:00
parent 50d46750d9
commit dc3ac00f03
1 changed files with 13 additions and 2 deletions
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15
tests/sysfs_rps.c
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@ -74,12 +74,20 @@ static int readval(FILE *filp)
return val;
}
static void writeval(FILE *filp, int val)
static int do_writeval(FILE *filp, int val, int lerrno)
{
/* Must write twice to sysfs since the first one simply calculates the size and won't return the error */
int ret;
rewind(filp);
fprintf(filp, "%d", val);
ret = fprintf(filp, "%d", val);
rewind(filp);
ret = fprintf(filp, "%d", val);
if (ret && lerrno)
assert(errno = lerrno);
fflush(filp);
return ret;
}
#define writeval(filp, val) do_writeval(filp, val, 0)
#define fcur (readval(stuff[CUR].filp))
#define fmin (readval(stuff[MIN].filp))
@ -176,6 +184,9 @@ int main(int argc, char *argv[])
writeval(stuff[MAX].filp, fmin - 1);
checkit();
do_writeval(stuff[MIN].filp, 0x11111110, EINVAL);
do_writeval(stuff[MAX].filp, 0, EINVAL);
writeval(stuff[MIN].filp, origmin);
writeval(stuff[MAX].filp, origmax);