public function testCanChangePassword()
{
$this->userModel->expects($this->once())->method('loadByUsername')->with('aydin')->will($this->returnValue($this->userModel));
$this->userModel->expects($this->at(1))->method('getId')->will($this->returnValue(2));
$this->userModel->expects($this->once())->method('validate');
$this->userModel->expects($this->once())->method('save');
$application = $this->getApplication();
$application->add($this->command);
$command = $this->getApplication()->find($this->commandName);
$commandTester = new CommandTester($command);
$commandTester->execute(array('command' => $command->getName(), 'username' => 'aydin', 'password' => 'password'));
$this->assertContains('Password successfully changed', $commandTester->getDisplay());
}