Imported Upstream version 4.2.0.179

Former-commit-id: 4610231f55806d2a05ed69e5ff3faa7336cc1479

mcs/tests/test-interpolation-08.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+
+public class Program
+{
+	public static int Main ()
+	{
+		var x = $@"({
+				new Dictionary<int, object> {
+					{ 1, "bbb" }
+				}.Count
+				});";
+
+		if (x != "(1);")
+			return 1;
+
+		return 0;
+	}
+}