/**
* @covers Fuel\Common\Arr::prepend
* @group Common
*/
public function testPrepend()
{
$input = array('one' => 1, 'two' => 2, 'three' => 3);
$expected = array('zero' => 0, 'one' => 1, 'two' => 2, 'three' => 3);
Arr::prepend($input, 'zero', 0);
$this->assertEquals($expected, $input);
$expected = array('zero' => 4, 'one' => 1, 'two' => 2, 'three' => 3);
Arr::prepend($input, 'zero', 4);
$this->assertEquals($expected, $input);
}