/**
* Test getting and setting the keys.
*
* @return void
*/
public function testKeys()
{
// Returns the keys array if nothing is passed in.
$this->assertEmpty($this->subject->keys());
// Returns $this if setting keys.
$this->assertInstanceOf(BaseTransformer::class, $this->subject->keys(['id', 'name']));
$this->assertEquals(['id', 'name'], $this->subject->keys());
// If the keys are not empty it merges instead of replacing the keys
$this->assertEquals(['id', 'name', 'lang'], $this->subject->keys(['lang'])->keys());
}
/**
* Transformer constructor.
*
* @param Model|\Illuminate\Support\Collection $item
* @param bool $childTransformation
*/
public function __construct($item = null, $childTransformation = false)
{
parent::__construct($item);
$this->childTransformation = $childTransformation;
}