public void HttpRequestHeader_Add_Remove_Success()
{
WebHeaderCollection w = new WebHeaderCollection();
w.Add(HttpRequestHeader.Warning, "Warning1");
Assert.Equal(1, w.Count);
Assert.Equal("Warning1", w[HttpRequestHeader.Warning]);
Assert.Equal("Warning", w.AllKeys[0]);
w.Remove(HttpRequestHeader.Warning);
Assert.Equal(0, w.Count);
}