[PATCH] ntdll/tests: Account for some timer resolution rounding.

[Francois Gouget]

With some time source drivers the requested timer resolution is
rounded to the nearest value supported by the hardware, and that is
then reported by NtSetTimerResolution(). So adjust the timer tests to
allow close values, including outside the max-min range!
Make sure the values given to NtQueryTimerResolution() are well outside
the range of what it could return.

Signed-off-by: Francois Gouget <fgouget(a)codeweavers.com>
---
This should fix the failures on cw-gtx560 and cw-rx460 in all Windows 
versions.
---
 dlls/ntdll/tests/time.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/dlls/ntdll/tests/time.c b/dlls/ntdll/tests/time.c
index f75b159f441..4b378d02e23 100644
--- a/dlls/ntdll/tests/time.c
+++ b/dlls/ntdll/tests/time.c
@@ -216,18 +216,20 @@ static void test_RtlQueryPerformanceCounter(void)
 }
 #endif
 
+#define TIMER_LEEWAY 10
 #define CHECK_CURRENT_TIMER(expected) \
     do { \
         ok(status == STATUS_SUCCESS, "NtSetTimerResolution failed %x\n", status); \
-        ok(cur2 == (expected), "expected new timer resolution %u, got %u\n", (expected), cur2); \
-        min2 = min + 10; \
+        ok(cur2 == (expected) || broken(abs((expected) - cur2) <= TIMER_LEEWAY), "expected new timer resolution %u, got %u\n", (expected), cur2); \
+        set = cur2; \
+        min2 = min + 20000; \
         cur2 = min2 + 1; \
         max2 = cur2 + 1; \
         status = NtQueryTimerResolution(&min2, &max2, &cur2); \
         ok(status == STATUS_SUCCESS, "NtQueryTimerResolution() failed %x\n", status); \
         ok(min2 == min, "NtQueryTimerResolution() expected min=%u, got %u\n", min, min2); \
         ok(max2 == max, "NtQueryTimerResolution() expected max=%u, got %u\n", max, max2); \
-        ok(cur2 == expected, "NtQueryTimerResolution() expected timer resolution %u, got %u\n", (expected), cur2); \
+        ok(cur2 == set, "NtQueryTimerResolution() expected timer resolution %u, got %u\n", set, cur2); \
     } while (0)
 
 static void test_TimerResolution(void)
@@ -252,7 +254,8 @@ static void test_TimerResolution(void)
     ok(min == 156250 /* 1/64s HPET */ || min == 156001 /* RTC */,
        "unexpected minimum timer resolution %u\n", min);
     ok(0 < max, "invalid maximum timer resolution, should be 0 < %u\n", max);
-    ok(max <= cur && cur <= min, "invalid timer resolutions, should be %u <= %u <= %u\n", max, cur, min);
+    ok(max <= cur || broken(max - TIMER_LEEWAY <= cur), "invalid timer resolutions, should be %u <= %u\n", max, cur);
+    ok(cur <= min || broken(cur <= min + TIMER_LEEWAY), "invalid timer resolutions, should be %u <= %u\n", cur, min);
 
     status = NtSetTimerResolution(0, FALSE, NULL);
     ok(status == STATUS_ACCESS_VIOLATION, "NtSetTimerResolution(,,NULL) success\n");
@@ -261,7 +264,7 @@ static void test_TimerResolution(void)
     status = NtSetTimerResolution(cur - 1, TRUE, NULL);
     ok(status == STATUS_ACCESS_VIOLATION, "NtSetTimerResolution() failed %x\n", status);
 
-    min2 = min + 1;
+    min2 = min + 10000;
     cur2 = min2 + 1;
     max2 = cur2 + 1;
     status = NtQueryTimerResolution(&min2, &max2, &cur2);
@@ -311,7 +314,7 @@ static void test_TimerResolution(void)
     set = max < cur ? cur - 1 : max;
     status = NtSetTimerResolution(set, TRUE, &cur2);
     ok(status == STATUS_SUCCESS, "NtSetTimerResolution() failed %x\n", status);
-    ok(cur2 <= set, "expected new timer resolution %u <= %u\n", cur2, set);
+    ok(cur2 <= set || broken(cur2 <= set + TIMER_LEEWAY), "expected new timer resolution %u <= %u\n", cur2, set);
     trace("timer resolution: %u(max) <= %u(cur) <= %u(prev) <= %u(min)\n", max, cur2, cur, min);
 
     cur2 = 7654321;
-- 
2.20.1