C# selenium log in / log out

gistfile1.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NUnit.Framework;
using OpenQA.Selenium;
using OpenQA.Selenium.Firefox;
using OpenQA.Selenium.Support.UI;

namespace Testimine
{

    [TestFixture]
    public class Program
    {
        IWebDriver browser;
        WebDriverWait w;

        [SetUp]
        public void Init() {
            browser = new FirefoxDriver();
            w = new WebDriverWait(browser, new TimeSpan(0, 0, 5));
        }

        [TearDown]
        public void Dispose() {
            browser.Quit();
        }
        private void logIn() {
            browser.Navigate().GoToUrl("http://www.cv.ee/login");
            browser.FindElement(By.Id("kasutajanimi")).SendKeys("bing");
            browser.FindElement(By.Id("parool")).SendKeys("bing");
            browser.FindElement(By.ClassName("btn_green_submit")).Click();
        }
        [Test]
        public void LogIn()
        {
            logIn();
            Assert.IsTrue(browser.FindElement(By.TagName("body")).Text.Contains("Ints Piratsioon"));
        }
        [Test]
        public void LogOut()
        {
            logIn();
            browser.FindElement(By.LinkText("Välju")).Click();
            Assert.IsTrue(!browser.FindElement(By.TagName("body")).Text.Contains("Ints Piratsioon"));
        }

        static void Main(string[] args)
        {

        }
    }
}