public function testCreatesSecurityGroup()
 {
     self::log('Create a cluster security group');
     $result = $this->redshift->createClusterSecurityGroup(array('ClusterSecurityGroupName' => self::SECURITY_GROUP_NAME, 'Description' => 'PHP Integ Test Cluster Security Group'));
     $this->assertEquals(self::SECURITY_GROUP_NAME, $result->get('ClusterSecurityGroupName'));
     $this->assertTrue($result->hasKey('EC2SecurityGroups'));
     $this->assertTrue($result->hasKey('ResponseMetadata'));
 }