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msvcrt/tests: Add tests for fflush on input stream.

This commit is contained in:
Akihiro Sagawa 2012-03-12 21:14:03 +09:00 committed by Alexandre Julliard
parent d59538f977
commit 09a7f8c196
1 changed files with 53 additions and 0 deletions
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53
dlls/msvcrt/tests/file.c
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@ -591,6 +591,58 @@ static void test_flsbuf( void )
free(tempf); free(tempf);
} }
static void test_fflush( void )
{
static const char obuf[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
char buf1[16], buf2[24];
char *tempf;
FILE *tempfh;
int ret;
tempf=_tempnam(".","wne");
/* Prepare the file. */
tempfh = fopen(tempf,"wb");
ok(tempfh != NULL, "Can't open test file.\n");
fwrite(obuf, 1, sizeof(obuf), tempfh);
fclose(tempfh);
/* Open the file for input. */
tempfh = fopen(tempf,"rb");
ok(tempfh != NULL, "Can't open test file.\n");
fread(buf1, 1, sizeof(buf1), tempfh);
/* Using fflush() on input stream is undefined in ANSI.
* But MSDN says that it clears input buffer. */
_lseek(_fileno(tempfh), 0, SEEK_SET);
ret = fflush(tempfh);
ok(ret == 0, "expected 0, got %d\n", ret);
memset(buf2, '?', sizeof(buf2));
fread(buf2, 1, sizeof(buf2), tempfh);
todo_wine ok(memcmp(buf1, buf2, sizeof(buf1)) == 0, "Got unexpected data (%c)\n", buf2[0]);
/* fflush(NULL) doesn't clear input buffer. */
_lseek(_fileno(tempfh), 0, SEEK_SET);
ret = fflush(NULL);
ok(ret == 0, "expected 0, got %d\n", ret);
memset(buf2, '?', sizeof(buf2));
fread(buf2, 1, sizeof(buf2), tempfh);
ok(memcmp(buf1, buf2, sizeof(buf1)) != 0, "Got unexpected data (%c)\n", buf2[0]);
/* _flushall() clears input buffer. */
_lseek(_fileno(tempfh), 0, SEEK_SET);
ret = _flushall();
ok(ret >= 0, "unexpected ret %d\n", ret);
memset(buf2, '?', sizeof(buf2));
fread(buf2, 1, sizeof(buf2), tempfh);
todo_wine ok(memcmp(buf1, buf2, sizeof(buf1)) == 0, "Got unexpected data (%c)\n", buf2[0]);
fclose(tempfh);
unlink(tempf);
free(tempf);
}
static void test_fgetwc( void ) static void test_fgetwc( void )
{ {
#define LLEN 512 #define LLEN 512
@ -1582,6 +1634,7 @@ START_TEST(file)
test_fgetc(); test_fgetc();
test_fputc(); test_fputc();
test_flsbuf(); test_flsbuf();
test_fflush();
test_fgetwc(); test_fgetwc();
test_ctrlz(); test_ctrlz();
test_file_put_get(); test_file_put_get();