public void When_Commit_Then_content_is_stored()
{
var filename = "a.txt";
var id1 = repoBuilder
.EmptyRepo()
.AddFile(filename, "version 1 a")
.Commit();
var id2 = repoBuilder
.AddFile(filename, "version 2 a")
.Commit();
repoBuilder.Git.Checkout(id1);
Assert.Equal("version 1 a", repoBuilder.ReadFile(filename));
repoBuilder.Git.Checkout(id2);
Assert.Equal("version 2 a", repoBuilder.ReadFile(filename));
}