public void AddBranch()
{
Assert.That(service.Add("east"), Is.EqualTo(1));
Assert.That(service.BranchNames(), Is.EqualTo(new List <string> {
"east"
}));
}
public void PersistentStorage()
{
service.Add("east");
var secondService = new BranchService();
Assert.That(secondService.BranchNames(), Is.EqualTo(new List <string> {
"east"
}));
}