public void TestMethodCheckFileSize()
{
WebRequestHelper wrh = new WebRequestHelper();
int fsize = wrh.CheckFileSize(url2);
Console.WriteLine(fsize);
Assert.AreEqual(101688487, fsize);
int fsize2 = wrh.CheckFileSize(url2_2);
Console.WriteLine(fsize2);
Assert.AreEqual(-404, fsize2);
int fsize3 = wrh.CheckFileSize(url4);
Console.WriteLine(fsize3);
Assert.AreEqual(122047, fsize3);
}