[w32handle] Fix deadlock on SignalAndWait (#4973)

[mono.git] / mcs / class / corlib / Test / System.Threading / WaitHandleTest.cs

diff --git a/mcs/class/corlib/Test/System.Threading/WaitHandleTest.cs b/mcs/class/corlib/Test/System.Threading/WaitHandleTest.cs
index 593edcf65c69780f331dae72e4e353651dbf87a2..7ceec51affc0b047af1602c85b591cd4a386e0aa 100644 (file)
--- a/mcs/class/corlib/Test/System.Threading/WaitHandleTest.cs
+++ b/mcs/class/corlib/Test/System.Threading/WaitHandleTest.cs
@@ -628,6 +628,19 @@ namespace MonoTests.System.Threading {
                        }
                }
 #endif // MONO_FEATURE_THREAD_SUSPEND_RESUME
+
+               [Test]
+               public static void SignalAndWait()
+               {
+                       using (var eventToSignal = new AutoResetEvent (false))
+                       using (var eventToWait = new AutoResetEvent (false))
+                       {
+                               eventToWait.Set ();
+
+                               Assert.IsTrue (WaitHandle.SignalAndWait (eventToSignal, eventToWait), "#1");
+                               Assert.IsTrue (eventToSignal.WaitOne (), "#2");
+                       }
+               }
        }
 }