Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-async-62.cs

@@ -0,0 +1,30 @@
+using System.Linq;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+public class Model
+{
+}
+
+public class Tests<X>
+{
+
+    Task DeleteClient (Model m)
+    {
+        return null;
+    }
+
+    public async Task Delete<T> (IEnumerable<T> models)
+        where T : Model
+    {
+        await Task.WhenAll (models.Select ((model) => DeleteClient (model)));
+    }
+}
+
+class O
+{
+    public static void Main ()
+    {
+        new Tests<long> ().Delete (new Model[0]).Wait ();
+    }
+}