public void CanGetChangedList()
{
var githelper = new GitHelper { DirectoryName = dirname };
githelper.Connect();
githelper.WriteFile("x","1");
githelper.WriteFile("y","1");
var changed = githelper.GetChangedFilesList();
Assert.AreEqual(2,changed.Length);
Assert.True(changed.Any(_=>_.FileName=="x"));
Assert.True(changed.Any(_=>_.FileName=="y"));
var ver1 = githelper.CommitAllChanges("1");
changed = githelper.GetChangedFilesList();
Assert.AreEqual(0, changed.Length);
changed = githelper.GetChangedFilesList(toref:"HEAD");
Assert.AreEqual(2, changed.Length);
var ver2 = githelper.WriteAndCommit("x", "2", "2");
changed = githelper.GetChangedFilesList(toref: "HEAD");
Assert.AreEqual(1, changed.Length);
var ver3 = githelper.WriteAndCommit("y", "2", "3");
changed = githelper.GetChangedFilesList(toref: "HEAD");
Assert.AreEqual(1, changed.Length);
changed = githelper.GetChangedFilesList(fromref:ver1,toref: "HEAD");
Assert.AreEqual(2, changed.Length);
}