/**
* @test
*/
public function shiftが先頭の要素を取り出す()
{
$collection = new Collection(['foo', 'bar', 'baz']);
$actual = $collection->shift();
$this->assertEquals('foo', $actual);
$this->assertSame(['bar', 'baz'], $collection->all());
}
public function testShiftReturnsAndRemovesFirstItemInCollection()
{
$c = new Collection(['foo', 'bar']);
$this->assertEquals('foo', $c->shift());
$this->assertEquals('bar', $c->first());
}
