ConnectionTest.php in Drupal 8

Namespace

Drupal\KernelTests\Core\Database

File

core/tests/Drupal/KernelTests/Core/Database/ConnectionTest.php

<?php

namespace Drupal\KernelTests\Core\Database;

use Drupal\Component\Render\FormattableMarkup;
use Drupal\Core\Database\Database;
use Drupal\Core\Database\DatabaseExceptionWrapper;
use Drupal\Core\Database\Query\Condition;

/**
 * Tests of the core database system.
 *
 * @group Database
 */
class ConnectionTest extends DatabaseTestBase {

  /**
   * Tests that connections return appropriate connection objects.
   */
  public function testConnectionRouting() {

    // Clone the primary credentials to a replica connection.
    // Note this will result in two independent connection objects that happen
    // to point to the same place.
    $connection_info = Database::getConnectionInfo('default');
    Database::addConnectionInfo('default', 'replica', $connection_info['default']);
    $db1 = Database::getConnection('default', 'default');
    $db2 = Database::getConnection('replica', 'default');
    $this
      ->assertNotNull($db1, 'default connection is a real connection object.');
    $this
      ->assertNotNull($db2, 'replica connection is a real connection object.');
    $this
      ->assertNotIdentical($db1, $db2, 'Each target refers to a different connection.');

    // Try to open those targets another time, that should return the same objects.
    $db1b = Database::getConnection('default', 'default');
    $db2b = Database::getConnection('replica', 'default');
    $this
      ->assertSame($db1, $db1b, 'A second call to getConnection() returns the same object.');
    $this
      ->assertSame($db2, $db2b, 'A second call to getConnection() returns the same object.');

    // Try to open an unknown target.
    $unknown_target = $this
      ->randomMachineName();
    $db3 = Database::getConnection($unknown_target, 'default');
    $this
      ->assertNotNull($db3, 'Opening an unknown target returns a real connection object.');
    $this
      ->assertSame($db1, $db3, 'An unknown target opens the default connection.');

    // Try to open that unknown target another time, that should return the same object.
    $db3b = Database::getConnection($unknown_target, 'default');
    $this
      ->assertSame($db3, $db3b, 'A second call to getConnection() returns the same object.');
  }

  /**
   * Tests that connections return appropriate connection objects.
   */
  public function testConnectionRoutingOverride() {

    // Clone the primary credentials to a replica connection.
    // Note this will result in two independent connection objects that happen
    // to point to the same place.
    $connection_info = Database::getConnectionInfo('default');
    Database::addConnectionInfo('default', 'replica', $connection_info['default']);
    Database::ignoreTarget('default', 'replica');
    $db1 = Database::getConnection('default', 'default');
    $db2 = Database::getConnection('replica', 'default');
    $this
      ->assertSame($db1, $db2, 'Both targets refer to the same connection.');
  }

  /**
   * Tests the closing of a database connection.
   */
  public function testConnectionClosing() {

    // Open the default target so we have an object to compare.
    $db1 = Database::getConnection('default', 'default');

    // Try to close the default connection, then open a new one.
    Database::closeConnection('default', 'default');
    $db2 = Database::getConnection('default', 'default');

    // Opening a connection after closing it should yield an object different than the original.
    $this
      ->assertNotIdentical($db1, $db2, 'Opening the default connection after it is closed returns a new object.');
  }

  /**
   * Tests the connection options of the active database.
   */
  public function testConnectionOptions() {
    $connection_info = Database::getConnectionInfo('default');

    // Be sure we're connected to the default database.
    $db = Database::getConnection('default', 'default');
    $connectionOptions = $db
      ->getConnectionOptions();

    // In the MySQL driver, the port can be different, so check individual
    // options.
    $this
      ->assertEqual($connection_info['default']['driver'], $connectionOptions['driver'], 'The default connection info driver matches the current connection options driver.');
    $this
      ->assertEqual($connection_info['default']['database'], $connectionOptions['database'], 'The default connection info database matches the current connection options database.');

    // Set up identical replica and confirm connection options are identical.
    Database::addConnectionInfo('default', 'replica', $connection_info['default']);
    $db2 = Database::getConnection('replica', 'default');

    // Getting a driver class ensures the namespace option is set.
    $this
      ->assertEquals($db
      ->getDriverClass('select'), $db2
      ->getDriverClass('select'));
    $connectionOptions2 = $db2
      ->getConnectionOptions();

    // Get a fresh copy of the default connection options.
    $connectionOptions = $db
      ->getConnectionOptions();
    $this
      ->assertIdentical($connectionOptions, $connectionOptions2, 'The default and replica connection options are identical.');

    // Set up a new connection with different connection info.
    $test = $connection_info['default'];
    $test['database'] .= 'test';
    Database::addConnectionInfo('test', 'default', $test);
    $connection_info = Database::getConnectionInfo('test');

    // Get a fresh copy of the default connection options.
    $connectionOptions = $db
      ->getConnectionOptions();
    $this
      ->assertNotEqual($connection_info['default']['database'], $connectionOptions['database'], 'The test connection info database does not match the current connection options database.');
  }

  /**
   * Ensure that you cannot execute multiple statements on MySQL.
   */
  public function testMultipleStatementsForNewPhp() {

    // This just tests mysql, as other PDO integrations don't allow disabling
    // multiple statements.
    if (Database::getConnection()
      ->databaseType() !== 'mysql') {
      $this
        ->markTestSkipped("This test only runs for MySQL");
    }

    // Disable the protection at the PHP level.
    $this
      ->expectException(DatabaseExceptionWrapper::class);
    Database::getConnection('default', 'default')
      ->query('SELECT * FROM {test}; SELECT * FROM {test_people}', [], [
      'allow_delimiter_in_query' => TRUE,
    ]);
  }

  /**
   * Ensure that you cannot execute multiple statements.
   */
  public function testMultipleStatements() {
    $this
      ->expectException(\InvalidArgumentException::class);
    Database::getConnection('default', 'default')
      ->query('SELECT * FROM {test}; SELECT * FROM {test_people}');
  }

  /**
   * Test the escapeTable(), escapeField() and escapeAlias() methods with all possible reserved words in PostgreSQL.
   */
  public function testPostgresqlReservedWords() {
    if (Database::getConnection()
      ->databaseType() !== 'pgsql') {
      $this
        ->markTestSkipped("This test only runs for PostgreSQL");
    }
    $db = Database::getConnection('default', 'default');
    $stmt = $db
      ->query("SELECT word FROM pg_get_keywords() WHERE catcode IN ('R', 'T')");
    $stmt
      ->execute();
    foreach ($stmt
      ->fetchAllAssoc('word') as $word => $row) {
      $expected = '"' . $word . '"';
      $this
        ->assertIdentical($db
        ->escapeTable($word), $expected, new FormattableMarkup('The reserved word %word was correctly escaped when used as a table name.', [
        '%word' => $word,
      ]));
      $this
        ->assertIdentical($db
        ->escapeField($word), $expected, new FormattableMarkup('The reserved word %word was correctly escaped when used as a column name.', [
        '%word' => $word,
      ]));
      $this
        ->assertIdentical($db
        ->escapeAlias($word), $expected, new FormattableMarkup('The reserved word %word was correctly escaped when used as an alias.', [
        '%word' => $word,
      ]));
    }
  }

  /**
   * Test that the method ::condition() returns a Condition object.
   */
  public function testCondition() {
    $connection = Database::getConnection('default', 'default');
    $namespace = (new \ReflectionObject($connection))
      ->getNamespaceName() . "\\Condition";
    if (!class_exists($namespace)) {
      $namespace = Condition::class;
    }
    $condition = $connection
      ->condition('AND');
    $this
      ->assertSame($namespace, get_class($condition));
  }

}

Classes

Name	Description
ConnectionTest	Tests of the core database system.