function testLoginCommand()
 {
     $username = '******';
     $command = new LoginCommand($username);
     $this->assertEquals(Queries::LOGIN_USER, $command->GetQuery());
     $this->assertEquals(1, $command->Parameters->Count());
     $par1 = $command->Parameters->Items(0);
     $this->assertEquals(ParameterNames::USERNAME, $par1->Name);
     $this->assertEquals(strtolower($username), $par1->Value);
 }