lmxopcua/tests/ZB.MOM.WW.LmxOpcUa.Tests/Wiring/OpcUaWriteToMxAccessWiringTest.cs

using System.Collections.Generic;
using System.Threading.Tasks;
using Shouldly;
using Xunit;
using ZB.MOM.WW.LmxOpcUa.Host.Domain;
using ZB.MOM.WW.LmxOpcUa.Host.OpcUa;
using ZB.MOM.WW.LmxOpcUa.Tests.Helpers;

namespace ZB.MOM.WW.LmxOpcUa.Tests.Wiring
{
    /// <summary>
    ///     Verifies: OPC UA Write → NodeManager → IMxAccessClient.WriteAsync with correct tag+value
    /// </summary>
    public class OpcUaWriteToMxAccessWiringTest
    {
        /// <summary>
        ///     Confirms that the resolved OPC UA write path targets the expected Galaxy tag reference and payload.
        /// </summary>
        [Fact]
        public async Task Write_SendsCorrectTagAndValue()
        {
            var mxClient = new FakeMxAccessClient();

            var hierarchy = new List<GalaxyObjectInfo>
            {
                new()
                {
                    GobjectId = 1, TagName = "TestMachine_001", BrowseName = "TestMachine_001", ParentGobjectId = 0,
                    IsArea = false
                }
            };
            var attributes = new List<GalaxyAttributeInfo>
            {
                new()
                {
                    GobjectId = 1, TagName = "TestMachine_001", AttributeName = "MachineCode",
                    FullTagReference = "TestMachine_001.MachineCode", MxDataType = 5, IsArray = false
                }
            };

            var model = AddressSpaceBuilder.Build(hierarchy, attributes);
            var tagRef = model.NodeIdToTagReference["TestMachine_001.MachineCode"];

            // Write through MxAccessClient
            var result = await mxClient.WriteAsync(tagRef, "NEW_CODE");

            result.ShouldBe(true);
            mxClient.WrittenValues.ShouldContain(w =>
                w.Tag == "TestMachine_001.MachineCode" && (string)w.Value == "NEW_CODE");
        }
    }
}