1 files changed, 80 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/threading/Sleep/test1/Sleep.cpp b/src/pal/tests/palsuite/threading/Sleep/test1/Sleep.cpp
new file mode 100644
index 0000000000..f7f7c91730
--- /dev/null
+++ b/src/pal/tests/palsuite/threading/Sleep/test1/Sleep.cpp
@@ -0,0 +1,80 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+/*============================================================
+**
+** Source: Sleep.c
+**
+** Purpose: Test to establish whether the Sleep function stops the thread from 
+** executing for the specified times.
+**
+** Dependencies: GetSystemTime
+**               Fail   
+**               Trace
+** 
+
+**
+**=========================================================*/
+
+#include <palsuite.h>
+
+DWORD SleepTimes[] =
+{
+    0,
+    50,
+    100,
+    500,
+    2000
+};
+
+/* Milliseconds of error which are acceptable Function execution time, etc. */
+DWORD AcceptableTimeError = 150;
+
+int __cdecl main( int argc, char **argv ) 
+{
+    UINT64 OldTimeStamp;
+    UINT64 NewTimeStamp;
+    DWORD MaxDelta;
+    DWORD TimeDelta;
+    DWORD i;
+
+    if(0 != (PAL_Initialize(argc, argv)))
+    {
+        return ( FAIL );
+    }
+
+    LARGE_INTEGER performanceFrequency;
+    if (!QueryPerformanceFrequency(&performanceFrequency))
+    {
+        return FAIL;
+    }
+
+    for( i = 0; i < sizeof(SleepTimes) / sizeof(DWORD); i++)
+    {
+        OldTimeStamp = GetHighPrecisionTimeStamp(performanceFrequency);
+        Sleep(SleepTimes[i]);
+        NewTimeStamp = GetHighPrecisionTimeStamp(performanceFrequency);
+
+        TimeDelta = NewTimeStamp - OldTimeStamp;
+
+        /* For longer intervals use a 10 percent tolerance */
+        if ((SleepTimes[i] * 0.1) > AcceptableTimeError)
+        {
+            MaxDelta = SleepTimes[i] + (DWORD)(SleepTimes[i] * 0.1);
+        }
+        else
+        {
+            MaxDelta = SleepTimes[i] + AcceptableTimeError;
+        }
+
+        if ( TimeDelta<SleepTimes[i] || TimeDelta>MaxDelta )
+        {
+            Fail("The sleep function slept for %d ms when it should have "
+             "slept for %d ms\n", TimeDelta, SleepTimes[i]);
+       }
+    }
+    PAL_Terminate();
+    return ( PASS );
+
+}