library(testit)

assert('validation of sql queries works', {
  (!is_sql_update_query('SELECT 1'))
  (!is_sql_update_query('SELECT * FROM foo'))
  (!is_sql_update_query(' SELECT 1'))
  (!is_sql_update_query('\nSELECT 1'))
  (!is_sql_update_query('\tSELECT 1'))
  (!is_sql_update_query(c('-- Some SQL', 'SELECT 1')))
  (!is_sql_update_query(c('/* ', '   Some SQL', '*/', 'SELECT 1')))
  (!is_sql_update_query(c('   /* ', '      Some SQL', '   */', 'SELECT 1')))

  (is_sql_update_query('UPDATE foo SET a=1'))
  (is_sql_update_query(' UPDATE foo SET a=1'))
  (is_sql_update_query('\n\nUPDATE foo SET a=1'))
  (is_sql_update_query('\tUPDATE foo SET a=1'))
  (is_sql_update_query('DELETE FROM foo'))
  (is_sql_update_query('INSERT INTO foo values(1)'))

  (is_sql_update_query(c('-- SELECT 1', 'INSERT INTO foo values(1)')))

  (is_sql_update_query(c('/*SELECT 1*/', '   INSERT INTO foo values(1)')))

  (is_sql_update_query(c(
    '/*', '   Insert records into table', '*/', '', '   INSERT INTO foo values(1)'
  )))

  (is_sql_update_query('update foo set a=1'))
  (is_sql_update_query('delete from foo'))
  (is_sql_update_query('insert into foo values(1)'))
})