/**
* Tests truncation of messages when max_allowed_packet exception occurs.
*/
function testMaxAllowedPacketQueryTruncating()
{
// This test only makes sense if we are running on a MySQL database.
// Test if we are.
$database = Database::getConnectionInfo('default');
if ($database['default']['driver'] == 'mysql') {
// The max_allowed_packet value is configured per database instance.
// Retrieve the max_allowed_packet value from the current instance and
// check if PHP is configured with sufficient allowed memory to be able
// to generate a query larger than max_allowed_packet.
$max_allowed_packet = db_query('SELECT @@global.max_allowed_packet')->fetchField();
if (Environment::checkMemoryLimit($max_allowed_packet + 16 * 1024 * 1024)) {
$long_name = str_repeat('a', $max_allowed_packet + 1);
try {
db_query('SELECT name FROM {test} WHERE name = :name', array(':name' => $long_name));
$this->fail("An exception should be thrown for queries larger than 'max_allowed_packet'");
} catch (DatabaseException $e) {
// Close and re-open the connection. Otherwise we will run into error
// 2006 "MySQL server had gone away" afterwards.
Database::closeConnection();
Database::getConnection();
$this->assertEqual($e->getPrevious()->errorInfo[1], 1153, "Got a packet bigger than 'max_allowed_packet' bytes exception thrown.");
// Use strlen() to count the bytes exactly, not the unicode chars.
$this->assertTrue(strlen($e->getMessage()) <= $max_allowed_packet, "'max_allowed_packet' exception message truncated.");
}
} else {
$this->verbose('The configured max_allowed_packet exceeds the php memory limit. Therefore the test is skipped.');
}
} else {
$this->verbose('The test requires MySQL. Therefore the test is skipped.');
}
}
/**
* Tests \Drupal\Component\Utility\Environment::checkMemoryLimit().
*
* @dataProvider providerTestCheckMemoryLimit
* @covers ::checkMemoryLimit
*
* @param string $required
* The required memory argument for
* \Drupal\Component\Utility\Environment::checkMemoryLimit().
* @param string $custom_memory_limit
* The custom memory limit argument for
* \Drupal\Component\Utility\Environment::checkMemoryLimit().
* @param bool $expected
* The expected return value from
* \Drupal\Component\Utility\Environment::checkMemoryLimit().
*/
public function testCheckMemoryLimit($required, $custom_memory_limit, $expected)
{
$actual = Environment::checkMemoryLimit($required, $custom_memory_limit);
$this->assertEquals($expected, $actual);
}