/**
* @depends testPopOne
*/
function testMultiplePushPeekPop()
{
$queue = new LinkedQueue();
$queue->enqueue(1);
$queue->enqueue(3);
$queue->enqueue(5);
$peek = $queue->first();
$this->assertEquals(1, $peek);
$this->assertCount(3, $queue);
$this->assertFalse($queue->isEmpty());
$pop = $queue->dequeue();
$this->assertEquals(1, $pop);
$this->assertCount(2, $queue);
$this->assertFalse($queue->isEmpty());
$peek = $queue->first();
$this->assertEquals(3, $peek);
$this->assertCount(2, $queue);
$this->assertFalse($queue->isEmpty());
$pop = $queue->dequeue();
$this->assertEquals(3, $pop);
$this->assertCount(1, $queue);
$this->assertFalse($queue->isEmpty());
$peek = $queue->first();
$this->assertEquals(5, $peek);
$this->assertCount(1, $queue);
$this->assertFalse($queue->isEmpty());
$pop = $queue->dequeue();
$this->assertEquals(5, $pop);
$this->assertCount(0, $queue);
$this->assertTrue($queue->isEmpty());
}
/**
* @expectedException \Collections\EmptyException
*/
function testPeekEmpty()
{
$queue = new LinkedQueue();
$queue->first();
}
