/**
* @When 點選「還書」按鈕
*/
public function clickReturnButton()
{
$button = $this->currentBookNode->findButton('還書');
$button->click();
}
/**
* @Given /^(collection "[^"]*") should have "([^"]*)" button$/
*/
public function collectionShouldHaveButton(NodeElement $collection, $buttonName)
{
expect($collection->findButton($buttonName))->toNotBeNull();
}