function DriverSpecificConnectionUnitTestBase::testOpenQueryClose

Tests Database::closeConnection() with a query.

File

core/tests/Drupal/KernelTests/Core/Database/DriverSpecificConnectionUnitTestBase.php, line 113

Class

DriverSpecificConnectionUnitTestBase

Tests management of database connections.

Namespace

Code

public function testOpenQueryClose() : void {
  // Execute a query.
  Database::getConnection(static::TEST_TARGET_CONNECTION)->query($this->getQuery()['show_tables']);
  // Close the connection.
  Database::closeConnection(static::TEST_TARGET_CONNECTION);
  // Wait 20ms to give the database engine sufficient time to react.
  usleep(20000);
  // Verify that we are back to the original connection count.
  $this->assertNoConnection($this->id);
}