PageObject パターンを実装してみた。多分こんな感じ

PageObjectTest.cs

using NUnit.Framework;
using OpenQA.Selenium.IE;
using PageObjects;

namespace WebDriverTest {
  [TestFixture]
  public class PageObjectTest {
    [Test]
    public void 検索() {
      var driver = new InternetExplorerDriver();
      try {
        var top = Top.Create(driver);
        var result = top.Search("Microsoft");
        result.検索結果件数.Is("527,000,000");
      } finally {
        driver.Quit();
      } 
    }
  }
}

Result.cs

using System.Text.RegularExpressions;
using OpenQA.Selenium;
using OpenQA.Selenium.Remote;

namespace PageObjects {
  public class Result {
    private readonly RemoteWebDriver driver;
    internal Result(RemoteWebDriver driver) {
      this.driver = driver;
    }
    private IWebElement lbl件数 {
      get { return driver.FindElementById("count"); }
    }
    public string 検索結果件数 {
      get { return Regex.Match(
        this.lbl件数.Text, "(?<=of ).*(?= results)").Value; }
    }
  }
}

Top.cs

using System;
using OpenQA.Selenium;
using OpenQA.Selenium.Remote;
using OpenQA.Selenium.Support.UI;

namespace PageObjects {
  public class Top {
    public static Top Create(RemoteWebDriver driver) {
      var instance = new Top(driver);
      driver.Url = "http://www.bing.com";
      return instance;
    }
    private readonly RemoteWebDriver driver;
    private Top(RemoteWebDriver driver) {
      this.driver = driver;
    }
    private IWebElement txt条件 {
      get { return driver.FindElementByName("q"); }
    }
    private IWebElement btn検索 {
      get {
        return driver.FindElementByXPath(
          "//input[@type='submit' and @name='go']");
      }
    }

    public Result Search(String 条件) {
      this.txt条件.Clear();
      this.txt条件.SendKeys(条件);
      this.btn検索.Click();
      var wait = new WebDriverWait(this.driver, new TimeSpan(0, 0, 10));
      var expectedTitle = string.Format("{0} - Bing", 条件);
      wait.Until(ExpectedConditions.TitleIs(expectedTitle));

      return new Result(driver);
    }
  }
}