public SqlType getExpressionSqlType(final Expression expression) {
    return getExpressionSqlType(expression, Collections.emptyMap());
  }
@Test
  public void shouldEvaluateBooleanSchemaForInExpression() {
    final Expression expression = new InPredicate(
        TestExpressions.COL0,
        new InListExpression(ImmutableList.of(new StringLiteral("key1"))));

    final SqlType exprType0 = expressionTypeManager.getExpressionSqlType(expression);

    assertThat(exprType0, is(SqlTypes.BOOLEAN));
  }