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Add cross-platform OPC UA client stack: shared library, CLI tool, and Avalonia UI

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Implements Client.Shared (IOpcUaClientService with connection lifecycle, failover,
browse, read/write, subscriptions, alarms, history, redundancy), Client.CLI (8 CliFx
commands mirroring tools/opcuacli-dotnet), and Client.UI (Avalonia desktop app with
tree browser, read/write, subscriptions, alarms, and history tabs). All three target
.NET 10 and are covered by 249 unit tests.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Joseph Doherty
2026-03-30 15:49:42 -04:00
parent 50b85d41bd
commit a2883b82d9
109 changed files with 8571 additions and 0 deletions
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135
tests/ZB.MOM.WW.LmxOpcUa.Client.UI.Tests/SubscriptionsViewModelTests.cs Normal file
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using Opc.Ua;
using Shouldly;
using Xunit;
using ZB.MOM.WW.LmxOpcUa.Client.Shared.Models;
using ZB.MOM.WW.LmxOpcUa.Client.UI.Services;
using ZB.MOM.WW.LmxOpcUa.Client.UI.Tests.Fakes;
using ZB.MOM.WW.LmxOpcUa.Client.UI.ViewModels;
namespace ZB.MOM.WW.LmxOpcUa.Client.UI.Tests;
public class SubscriptionsViewModelTests
{
private readonly FakeOpcUaClientService _service;
private readonly SubscriptionsViewModel _vm;
public SubscriptionsViewModelTests()
{
_service = new FakeOpcUaClientService();
var dispatcher = new SynchronousUiDispatcher();
_vm = new SubscriptionsViewModel(_service, dispatcher);
}
[Fact]
public void AddSubscriptionCommand_CannotExecute_WhenDisconnected()
{
_vm.IsConnected = false;
_vm.NewNodeIdText = "ns=2;s=SomeNode";
_vm.AddSubscriptionCommand.CanExecute(null).ShouldBeFalse();
}
[Fact]
public void AddSubscriptionCommand_CannotExecute_WhenNoNodeId()
{
_vm.IsConnected = true;
_vm.NewNodeIdText = null;
_vm.AddSubscriptionCommand.CanExecute(null).ShouldBeFalse();
}
[Fact]
public async Task AddSubscriptionCommand_AddsItem()
{
_vm.IsConnected = true;
_vm.NewNodeIdText = "ns=2;s=SomeNode";
_vm.NewInterval = 500;
await _vm.AddSubscriptionCommand.ExecuteAsync(null);
_vm.ActiveSubscriptions.Count.ShouldBe(1);
_vm.ActiveSubscriptions[0].NodeId.ShouldBe("ns=2;s=SomeNode");
_vm.ActiveSubscriptions[0].IntervalMs.ShouldBe(500);
_vm.SubscriptionCount.ShouldBe(1);
_service.SubscribeCallCount.ShouldBe(1);
}
[Fact]
public async Task RemoveSubscriptionCommand_RemovesItem()
{
_vm.IsConnected = true;
_vm.NewNodeIdText = "ns=2;s=SomeNode";
await _vm.AddSubscriptionCommand.ExecuteAsync(null);
_vm.SelectedSubscription = _vm.ActiveSubscriptions[0];
await _vm.RemoveSubscriptionCommand.ExecuteAsync(null);
_vm.ActiveSubscriptions.ShouldBeEmpty();
_vm.SubscriptionCount.ShouldBe(0);
_service.UnsubscribeCallCount.ShouldBe(1);
}
[Fact]
public void RemoveSubscriptionCommand_CannotExecute_WhenNoSelection()
{
_vm.IsConnected = true;
_vm.SelectedSubscription = null;
_vm.RemoveSubscriptionCommand.CanExecute(null).ShouldBeFalse();
}
[Fact]
public async Task DataChanged_UpdatesMatchingRow()
{
_vm.IsConnected = true;
_vm.NewNodeIdText = "ns=2;s=SomeNode";
await _vm.AddSubscriptionCommand.ExecuteAsync(null);
var dataValue = new DataValue(new Variant(42), StatusCodes.Good, DateTime.UtcNow);
_service.RaiseDataChanged(new DataChangedEventArgs("ns=2;s=SomeNode", dataValue));
_vm.ActiveSubscriptions[0].Value.ShouldBe("42");
_vm.ActiveSubscriptions[0].Status.ShouldNotBeNull();
}
[Fact]
public async Task DataChanged_DoesNotUpdateNonMatchingRow()
{
_vm.IsConnected = true;
_vm.NewNodeIdText = "ns=2;s=SomeNode";
await _vm.AddSubscriptionCommand.ExecuteAsync(null);
var dataValue = new DataValue(new Variant(42), StatusCodes.Good, DateTime.UtcNow);
_service.RaiseDataChanged(new DataChangedEventArgs("ns=2;s=OtherNode", dataValue));
_vm.ActiveSubscriptions[0].Value.ShouldBeNull();
}
[Fact]
public void Clear_RemovesAllSubscriptions()
{
_vm.ActiveSubscriptions.Add(new SubscriptionItemViewModel("ns=2;s=X", 1000));
_vm.SubscriptionCount = 1;
_vm.Clear();
_vm.ActiveSubscriptions.ShouldBeEmpty();
_vm.SubscriptionCount.ShouldBe(0);
}
[Fact]
public void Teardown_UnhooksEventHandler()
{
_vm.Teardown();
// After teardown, raising event should not update anything
_vm.ActiveSubscriptions.Add(new SubscriptionItemViewModel("ns=2;s=X", 1000));
var dataValue = new DataValue(new Variant(42), StatusCodes.Good, DateTime.UtcNow);
_service.RaiseDataChanged(new DataChangedEventArgs("ns=2;s=X", dataValue));
_vm.ActiveSubscriptions[0].Value.ShouldBeNull();
}
[Fact]
public void DefaultInterval_Is1000()
{
_vm.NewInterval.ShouldBe(1000);
}
}