using NUnit.Framework;
using BaseGames.AI;

namespace BaseGames.Tests.EditMode.AI
{
    public class AiScriptTests
    {
        sealed class SampleAi : AiScript
        {
            public int BuildCount;
            protected override void Build(BrainBuilder b)
            {
                BuildCount++;
                b.Entry("A");
                b.State("A").To("B").When(c => c.Sensor.SeesPlayer(), "SeesPlayer");
                b.State("B");
            }
        }

        [Test]
        public void GetOrBuildGraph_ReturnsSameSharedInstance()
        {
            var script = new SampleAi();
            var g1 = script.GetOrBuildGraph();
            var g2 = script.GetOrBuildGraph();
            Assert.AreSame(g1, g2);                 // flyweight：同一引用
            Assert.AreEqual(1, script.BuildCount);  // 只构建一次
        }
    }
}