public void add_transition_predicate_can_succeed()
{
var stateA = new TestState();
var stateB = new TestState();
stateA.AddTransition(stateB, ctx => ctx != null);
Assert.AreEqual(stateB, stateA.EvaluateTransitions(new object()));
Assert.AreEqual(null, stateA.EvaluateTransitions(null));
}
public void state_null_transition_defers_to_later_transitions()
{
var stateA = new TestState();
var stateB = new TestState();
stateA.AddTransition(ctx => null);
stateA.AddTransition(ctx => stateB);
Assert.AreEqual(stateB, stateA.EvaluateTransitions(new TestContext()));
}
public void state_evaluate_transitions_prefers_earlier_transitions()
{
var stateA = new TestState();
var stateB = new TestState();
var stateC = new TestState();
stateA.AddTransition(ctx => stateB);
stateA.AddTransition(ctx => stateC);
Assert.AreEqual(stateB, stateA.EvaluateTransitions(new TestContext()));
}
public void state_evaluate_transitions_depends_on_value()
{
var stateA = new TestState();
var stateB = new TestState();
var stateC = new TestState();
stateA.AddTransition(ctx => {
if (ctx.A)
{
return(stateA);
}
return(ctx.B ? stateB : null);
});
stateA.AddTransition(ctx => stateC);
Assert.AreEqual(stateC, stateA.EvaluateTransitions(new TestContext()));
Assert.AreEqual(stateA, stateA.EvaluateTransitions(new TestContext {
A = true
}));
Assert.AreEqual(stateB, stateA.EvaluateTransitions(new TestContext {
B = true
}));
}
