@Test
public void prependTo_singleColumn_prependsProperSql() {

  /* Given */
  InsertColumnsImpl insertColumns = new InsertColumnsImpl(new String[] {"a"}, mock(SqlPart.class));
  RawSqlBuilder builder = new RawSqlBuilderImpl();
  /* When */
  insertColumns.prependTo(builder);
  /* Then */
  assertThat(builder.toString(), is("(a)"));
}