@Test
public void testIn() {

  TerminalParserTest.assertParser(ExpressionParser.in(NUMBER), "1 in (2)",
      new BinaryExpression(number(1), Op.IN, TupleExpression.of(number(2))));
  TerminalParserTest.assertParser(ExpressionParser.in(NUMBER), "1 in (2, 3)",
      new BinaryExpression(number(1), Op.IN, TupleExpression.of(number(2), number(3))));
}