@Test
public void prependToWithMultipleColumns_prependsProperSql() {

  /* Given */
  Column[] cs = {column("a"), column("b"), column("c")};
  ColumnsImpl columns = new ColumnsImpl(cs, mock(SqlPart.class));
  RawSqlBuilder builder = new RawSqlBuilderImpl();
  /* When */
  columns.prependTo(builder);
  /* Then */
  assertThat(builder.toString(), is("(a,b,c)"));
}