public void Clear_RemovesAllPrevious()
{
_unitUnderTest = new FifoScheduler();
_unitUnderTest.Add(new PageToCrawl(new Uri("http://a.com/")));
_unitUnderTest.Add(new PageToCrawl(new Uri("http://b.com/")));
_unitUnderTest.Add(new PageToCrawl(new Uri("http://c.com/")));
_unitUnderTest.Clear();
Assert.AreEqual(0, _unitUnderTest.Count);
}