/** * @depends testPopOne */ function testContains() { $queue = new LinkedQueue(); $this->assertFalse($queue->contains(0)); $queue->enqueue(1); $this->assertFalse($queue->contains(0)); $queue->enqueue(0); $this->assertTrue($queue->contains(0)); $queue->dequeue(); $this->assertTrue($queue->contains(0)); $queue->dequeue(); $this->assertFalse($queue->contains(0)); }