public void SimpleChangePriorityTest()
{
SearchEngine engine = new SearchEngine();
InsertSamples(ref engine);
var results = engine.Find("win").ToArray();
Assert.IsTrue(results[0] == "D:\\Folder1\\Winfred3;90");
Assert.IsTrue(results.Length == 4);
engine.ChangePriority(@"D:\WinFred\index.html", 30);
var results2 = engine.Find("ind").ToArray();
Assert.IsTrue(results2[0] == "D:\\WinFred\\index.html;96");
engine.ChangePriority(@"D:\WinFred\index.html", -30);
Assert.IsTrue(engine.Find("ind").ToArray()[0] == "D:\\WinFred\\index.html;66");
}