public void HttpResponseHeader_AddQuery_CommonHeader_Success()
{
string headerValue = "value123";
WebHeaderCollection w = new WebHeaderCollection();
w[HttpResponseHeader.ProxyAuthenticate] = headerValue;
w[HttpResponseHeader.WwwAuthenticate] = headerValue;
Assert.Equal(headerValue, w[HttpResponseHeader.ProxyAuthenticate]);
Assert.Equal(headerValue, w[HttpResponseHeader.WwwAuthenticate]);
}