Npgsql.Tests.CommandBuilderTests.DeriveParametersNoParams C# (CSharp) Method

        public void DeriveParametersNoParams()
        {
            using (var conn = OpenConnection())
            {
                // This function returns record because of the two Out (InOut & Out) parameters
                conn.ExecuteNonQuery(@"
                    CREATE OR REPLACE FUNCTION pg_temp.func() RETURNS int AS
                    '
                    BEGIN
                    RETURN 4;
                    END;
                    ' LANGUAGE 'plpgsql';
                ");

                var cmd = new NpgsqlCommand("pg_temp.func", conn) { CommandType = CommandType.StoredProcedure };
                NpgsqlCommandBuilder.DeriveParameters(cmd);
                Assert.That(cmd.Parameters, Is.Empty);
            }
        }