Sweden-Number/dlls/quartz/tests/referenceclock.c

95 lines
3.6 KiB
C

/*
* Unit tests for Direct Show functions - IReferenceClock
*
* Copyright (C) 2007 Alex Villacís Lasso
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <assert.h>
#define COBJMACROS
#include "wine/test.h"
#include "uuids.h"
#include "dshow.h"
#include "control.h"
/* The following method expects a reference clock that will keep ticking for
* at least 5 seconds since its creation. This method assumes no other methods
* were called on the IReferenceClock interface since its creation.
*/
static void test_IReferenceClock_methods(const char * clockdesc, IReferenceClock * pClock)
{
HRESULT hr;
REFERENCE_TIME time1;
REFERENCE_TIME time2;
signed long diff;
/* Test response from invalid (NULL) argument */
hr = IReferenceClock_GetTime(pClock, NULL);
ok (hr == E_POINTER, "%s - Expected E_POINTER (0x%08x), got 0x%08x\n", clockdesc, E_POINTER, hr);
/* Test response for valid value - try 1 */
/* TODO: test whether Windows actually returns S_FALSE in its first invocation */
time1 = (REFERENCE_TIME)0xdeadbeef;
hr = IReferenceClock_GetTime(pClock, &time1);
ok (hr == S_FALSE || hr == S_OK, "%s - Expected S_OK or S_FALSE, got 0x%08x\n", clockdesc, hr);
ok (time1 != 0xdeadbeef, "%s - value was NOT changed on return!\n", clockdesc);
/* Test response for valid value - try 2 */
time2 = (REFERENCE_TIME)0xdeadbeef;
hr = IReferenceClock_GetTime(pClock, &time2);
ok (hr == S_FALSE || hr == S_OK, "%s - Expected S_OK or S_FALSE, got 0x%08x\n", clockdesc, hr);
ok (time2 != 0xdeadbeef, "%s - value was NOT changed on return!\n", clockdesc);
/* In case the second invocation managed to return S_FALSE, MSDN says the
returned time is the same as the previous one. */
ok ((hr != S_FALSE || time1 == time2), "%s - returned S_FALSE, but values not equal!\n", clockdesc);
time1 = time2;
Sleep(1000); /* Sleep for at least 1 second */
hr = IReferenceClock_GetTime(pClock, &time2);
/* After a 1-second sleep, there is no excuse to get S_FALSE (see TODO above) */
ok (hr == S_OK, "%s - Expected S_OK, got 0x%08x\n", clockdesc, hr);
/* FIXME: How much deviation should be allowed after a sleep? */
/* 0.3% is common, and 0.4% is sometimes observed. Let's try 0.6%. */
diff = time2 - time1;
ok (9940000 <= diff && diff <= 10060000, "%s - Expected difference around 10000000, got %lu\n", clockdesc, diff);
}
static void test_IReferenceClock_SystemClock(void)
{
IReferenceClock * pReferenceClock;
HRESULT hr;
hr = CoCreateInstance(&CLSID_SystemClock, NULL, CLSCTX_INPROC_SERVER, &IID_IReferenceClock, (LPVOID*)&pReferenceClock);
ok(hr == S_OK, "Unable to create reference clock from system clock %x\n", hr);
if (hr == S_OK)
{
test_IReferenceClock_methods("SystemClock", pReferenceClock);
IReferenceClock_Release(pReferenceClock);
}
}
START_TEST(referenceclock)
{
CoInitialize(NULL);
test_IReferenceClock_SystemClock();
}