public void TestInternetSearching()
{
SearchEngineFactory factory = new InternetSearchEngineFactory();
SearchEngine engine = factory.CreateSearchEngine();
SearchEngine engine1 = factory.CreateSearchEngine();
Assert.IsNotNull(engine);
Assert.IsNotNull(engine1);
Assert.AreEqual(engine, engine1);
SearchResult result1 = new SearchResult();
SearchResult result2 = new SearchResult();
Assert.IsNotNull(result1);
Assert.IsNotNull(result2);
result1 = engine.ExactSearch(m_control.Categories);
result2 = engine.BlurSearch(m_control.Categories);
Assert.AreEqual("contents", result1.Content);
Assert.AreEqual("more contents", result2.Content);
}