public void TestCallbacks()
{
List<string> messages = new List<string>();
StateMachine<TestNum> machine = new StateMachine<TestNum>();
machine.AddState(TestNum.Red);
machine.SubscribeToEntry(TestNum.Red, (TestNum oldState, TestNum newState) =>
{
messages.Add("Enter the red!");
});
machine.SubscribeToExit(TestNum.Red, (TestNum oldState, TestNum newState) =>
{
messages.Add("Exit the red!");
});
machine.AddState(TestNum.White);
machine.SubscribeToEntry(TestNum.White, (TestNum oldState, TestNum newState) =>
{
messages.Add("Enter the white!");
});
machine.SubscribeToExit(TestNum.White, (TestNum oldState, TestNum newState) =>
{
messages.Add("Exit the white!");
});
machine.SubscribeToExit(TestNum.White, (TestNum oldState, TestNum newState) =>
{
messages.Add("Sneaky Second Message!");
});
machine.ChangeState(TestNum.Red);
machine.ChangeState(TestNum.White);
machine.ChangeState(TestNum.Red);
Assert.AreEqual(6, messages.Count);
Assert.AreEqual("Enter the red!", messages[0]);
Assert.AreEqual("Exit the red!", messages[1]);
Assert.AreEqual("Enter the white!", messages[2]);
Assert.AreEqual("Exit the white!", messages[3]);
Assert.AreEqual("Sneaky Second Message!", messages[4]);
Assert.AreEqual("Enter the red!", messages[5]);
}