Jacek Caban : dmusic/tests: Introduce compare_time helper.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 5dd670c7c54d6c170088499021ce78a1694fdd9d
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=5dd670c7c54d6c170088499021ce78a1694fdd9d

Author: Jacek Caban <jacek at codeweavers.com>
Date:   Wed May 27 23:55:15 2020 +0200

dmusic/tests: Introduce compare_time helper.

Signed-off-by: Jacek Caban <jacek at codeweavers.com>
Signed-off-by: Michael Stefaniuc <mstefani at winehq.org>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/dmusic/tests/dmusic.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/dlls/dmusic/tests/dmusic.c b/dlls/dmusic/tests/dmusic.c
index 776f9d0ec9..c7de6c5326 100644
--- a/dlls/dmusic/tests/dmusic.c
+++ b/dlls/dmusic/tests/dmusic.c
@@ -30,6 +30,12 @@
 #include "dmusicf.h"
 #include "dmksctrl.h"
 
+static BOOL compare_time(REFERENCE_TIME x, REFERENCE_TIME y, unsigned int max_diff)
+{
+    REFERENCE_TIME diff = x > y ? x - y : y - x;
+    return diff <= max_diff;
+}
+
 static void test_dmusic(void)
 {
     IDirectMusic *dmusic = NULL;
@@ -800,7 +806,7 @@ static void test_master_clock(void)
     hr = IReferenceClock_GetTime(clock, &time1);
     ok(hr == S_OK, "Got hr %#x.\n", hr);
     time2 = counter.QuadPart * 10000000.0 / freq.QuadPart;
-    ok(abs(time1 - time2) < 20 * 10000, "Expected about %s, got %s.\n",
+    ok(compare_time(time1,  time2, 20 * 10000), "Expected about %s, got %s.\n",
             wine_dbgstr_longlong(time2), wine_dbgstr_longlong(time1));
 
     hr = IReferenceClock_GetTime(clock, &time2);