public void BrowserUtilityTest()
{
var userAgent = "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36";
var mockHttpRequest = new Mock <HttpRequest>();
mockHttpRequest.Setup(z => z.Headers["User-Agent"])
.Returns(userAgent);
var result = BrowserUtility.GetUserAgent(mockHttpRequest.Object);
Console.WriteLine(result);
Assert.AreEqual(userAgent, result, true);
}