add a test for ByRef const argument

Author: Timur Kelman

Tests/CSharp/MemberTests/MemberTests.cs

@@ -4047,6 +4047,40 @@ public static int StaticTestProperty
             return _StaticTestProperty_sPrevPosition + 1;
         }
     }
+}");
+    }
+
+    [Fact]
+    public async Task TestRefConstArgumentAsync()
+    {
+        await TestConversionVisualBasicToCSharpAsync(
+            @"Class RefConstArgument
+    Const a As String = ""a""
+    Sub S()
+        Const b As String = ""b""
+        MO(a)
+        MS(b)
+    End Sub
+    Sub MO(ByRef s As Object) : End Sub
+    Sub MS(ByRef s As String) : End Sub
+End Class", @"
+internal partial class RefConstArgument
+{
+    private const string a = ""a"";
+    public void S()
+    {
+        const string b = ""b"";
+        object args = a;
+        MO(ref args);
+        string args1 = b;
+        MS(ref args1);
+    }
+    public void MO(ref object s)
+    {
+    }
+    public void MS(ref string s)
+    {
+    }
 }");
     }
 }