using Opc.Ua;
using Shouldly;
using Xunit;
using ZB.MOM.WW.OtOpcUa.Host.OpcUa;

namespace ZB.MOM.WW.OtOpcUa.Tests.Redundancy
{
    public class RedundancyModeResolverTests
    {
        [Fact]
        public void Resolve_Disabled_ReturnsNone()
        {
            RedundancyModeResolver.Resolve("Warm", false).ShouldBe(RedundancySupport.None);
        }

        [Fact]
        public void Resolve_Warm_ReturnsWarm()
        {
            RedundancyModeResolver.Resolve("Warm", true).ShouldBe(RedundancySupport.Warm);
        }

        [Fact]
        public void Resolve_Hot_ReturnsHot()
        {
            RedundancyModeResolver.Resolve("Hot", true).ShouldBe(RedundancySupport.Hot);
        }

        [Fact]
        public void Resolve_Unknown_FallsBackToNone()
        {
            RedundancyModeResolver.Resolve("Transparent", true).ShouldBe(RedundancySupport.None);
        }

        [Fact]
        public void Resolve_CaseInsensitive()
        {
            RedundancyModeResolver.Resolve("warm", true).ShouldBe(RedundancySupport.Warm);
            RedundancyModeResolver.Resolve("WARM", true).ShouldBe(RedundancySupport.Warm);
            RedundancyModeResolver.Resolve("hot", true).ShouldBe(RedundancySupport.Hot);
        }

        [Fact]
        public void Resolve_Null_FallsBackToNone()
        {
            RedundancyModeResolver.Resolve(null!, true).ShouldBe(RedundancySupport.None);
        }

        [Fact]
        public void Resolve_Empty_FallsBackToNone()
        {
            RedundancyModeResolver.Resolve("", true).ShouldBe(RedundancySupport.None);
        }
    }
}