function ConnectionUnitTest::testOpenQueryPrefetchClose

Tests Database::closeConnection() with a query and custom prefetch method.

File

core/modules/simpletest/tests/database_test.test, line 4059

Database tests.

Class

ConnectionUnitTest

Tests management of database connections.

Code

function testOpenQueryPrefetchClose() {
  if ($this->skipTest) {
    return;
  }
  // Add and open a new connection.
  $this->addConnection();
  $id = $this->getConnectionID();
  Database::getConnection($this->target, $this->key);

  // Verify that there is a new connection.
  $this->assertConnection($id);

  // Execute a query.
  Database::getConnection($this->target, $this->key)->query('SHOW TABLES')->fetchCol();

  // Close the connection.
  Database::closeConnection($this->target, $this->key);
  // Wait 20ms to give the database engine sufficient time to react.
  usleep(20000);

  // Verify that we are back to the original connection count.
  $this->assertNoConnection($id);
}