Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-async-35.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Reflection;
+using System.Threading.Tasks;
+using System.Runtime.CompilerServices;
+using System.Linq;
+
+namespace N.M
+{
+	class C
+	{
+		public static async Task<int> AsyncMethod ()
+		{
+			await Task.Delay (1);
+			return 0;
+		}
+
+		public static int Main ()
+		{
+			var m = typeof (C).GetMethod ("AsyncMethod");
+			var attr = m.GetCustomAttribute<AsyncStateMachineAttribute> ();
+			if (attr == null)
+				return 1;
+
+			if (attr.StateMachineType == null)
+				return 2;
+
+			Func<Task<int>> a = async () => await AsyncMethod ();
+
+			var c = typeof (C).GetMethods (BindingFlags.NonPublic | BindingFlags.Static).Where (l =>
+				l.IsDefined (typeof (AsyncStateMachineAttribute))).Count ();
+
+			if (c != 1)
+				return 3;
+
+			return 0;
+		}
+	}
+}