/**
* @covers Button::unsetParam
*/
public function testUnsetParam()
{
$key = "id";
$value = "124";
$resultButton = $this->button->setParam($key, $value);
$actual = $resultButton->getHref()->get($key);
$this->assertEquals($value, $actual);
$resultButton = $this->button->unsetParam($key);
$actual = $resultButton->getHref()->get($key);
$this->assertNull($actual);
}