function DatabaseTemporaryQueryTestCase::testTemporaryQuery in Drupal 7

Confirm that temporary tables work and are limited to one request.

File

modules/simpletest/tests/database_test.test, line 3175

Class

DatabaseTemporaryQueryTestCase

Temporary query tests.

Code

function testTemporaryQuery() {
  $this
    ->drupalGet('database_test/db_query_temporary');
  $data = json_decode($this
    ->drupalGetContent());
  if ($data) {
    $this
      ->assertEqual($this
      ->countTableRows("system"), $data->row_count, 'The temporary table contains the correct amount of rows.');
    $this
      ->assertFalse(db_table_exists($data->table_name), 'The temporary table is, indeed, temporary.');
  }
  else {
    $this
      ->fail("The creation of the temporary table failed.");
  }

  // Now try to run two db_query_temporary() in the same request.
  $table_name_system = db_query_temporary('SELECT status FROM {system}', array());
  $table_name_users = db_query_temporary('SELECT uid FROM {users}', array());
  $this
    ->assertEqual($this
    ->countTableRows($table_name_system), $this
    ->countTableRows("system"), 'A temporary table was created successfully in this request.');
  $this
    ->assertEqual($this
    ->countTableRows($table_name_users), $this
    ->countTableRows("users"), 'A second temporary table was created successfully in this request.');

  // Check that leading whitespace and comments do not cause problems
  // in the modified query.
  $sql = "\n      -- Let's select some rows into a temporary table\n      SELECT name FROM {test}\n    ";
  $table_name_test = db_query_temporary($sql, array());
  $this
    ->assertEqual($this
    ->countTableRows($table_name_test), $this
    ->countTableRows('test'), 'Leading white space and comments do not interfere with temporary table creation.');
}