using System;

public class Program

{

    [Test]

    public void Test1()

    {

        var btn1 = Find.ByXpath(".//div/span[0]");

        var lbl1 = Find.ByXpath(".//*[@class='test']");

        webPage.Open();

        btn1.Click();

        Assert.That(lbl1.Text, Is.Equal("Button is clicked"));

    }

}