public void Log_ShouldBeEmpty_AfterCreation()
{
var stack = new ObservableStack <int>();
var helper = new StackOperationsLogger();
helper.SubscribeOn(stack);
Assert.AreEqual("", helper.GetLog());
}
public void Log_ShouldContainAllOperations()
{
var stack = new ObservableStack <int>();
var helper = new StackOperationsLogger();
helper.SubscribeOn(stack);
stack.Push(1);
stack.Push(2);
stack.Pop();
stack.Push(10);
Assert.AreEqual("+1+2-2+10", helper.GetLog());
}