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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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155
tests/ZB.MOM.WW.LmxOpcUa.Client.UI.Tests/BrowseTreeViewModelTests.cs Normal file
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using Shouldly;
using Xunit;
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;
using BrowseResult = ZB.MOM.WW.LmxOpcUa.Client.Shared.Models.BrowseResult;
namespace ZB.MOM.WW.LmxOpcUa.Client.UI.Tests;
public class BrowseTreeViewModelTests
{
private readonly FakeOpcUaClientService _service;
private readonly SynchronousUiDispatcher _dispatcher;
private readonly BrowseTreeViewModel _vm;
public BrowseTreeViewModelTests()
{
_service = new FakeOpcUaClientService
{
BrowseResults = new[]
{
new BrowseResult("ns=2;s=Node1", "Node1", "Object", true),
new BrowseResult("ns=2;s=Node2", "Node2", "Variable", false)
}
};
_dispatcher = new SynchronousUiDispatcher();
_vm = new BrowseTreeViewModel(_service, _dispatcher);
}
[Fact]
public async Task LoadRootsAsync_PopulatesRootNodes()
{
await _vm.LoadRootsAsync();
_vm.RootNodes.Count.ShouldBe(2);
_vm.RootNodes[0].DisplayName.ShouldBe("Node1");
_vm.RootNodes[1].DisplayName.ShouldBe("Node2");
}
[Fact]
public async Task LoadRootsAsync_BrowsesWithNullParent()
{
await _vm.LoadRootsAsync();
_service.BrowseCallCount.ShouldBe(1);
_service.LastBrowseParentNodeId.ShouldBeNull();
}
[Fact]
public void Clear_RemovesAllRootNodes()
{
_vm.RootNodes.Add(new TreeNodeViewModel("ns=2;s=X", "X", "Object", false, _service, _dispatcher));
_vm.Clear();
_vm.RootNodes.ShouldBeEmpty();
}
[Fact]
public async Task LoadRootsAsync_NodeWithChildren_HasPlaceholder()
{
await _vm.LoadRootsAsync();
var nodeWithChildren = _vm.RootNodes[0];
nodeWithChildren.HasChildren.ShouldBeTrue();
nodeWithChildren.Children.Count.ShouldBe(1);
nodeWithChildren.Children[0].IsPlaceholder.ShouldBeTrue();
}
[Fact]
public async Task LoadRootsAsync_NodeWithoutChildren_HasNoPlaceholder()
{
await _vm.LoadRootsAsync();
var leafNode = _vm.RootNodes[1];
leafNode.HasChildren.ShouldBeFalse();
leafNode.Children.ShouldBeEmpty();
}
[Fact]
public async Task TreeNode_FirstExpand_TriggersChildBrowse()
{
_service.BrowseResults = new[]
{
new BrowseResult("ns=2;s=Parent", "Parent", "Object", true)
};
await _vm.LoadRootsAsync();
// Reset browse results for child browse
_service.BrowseResults = new[]
{
new BrowseResult("ns=2;s=Child1", "Child1", "Variable", false)
};
var parent = _vm.RootNodes[0];
var initialBrowseCount = _service.BrowseCallCount;
parent.IsExpanded = true;
// Allow async operation to complete
await Task.Delay(50);
_service.BrowseCallCount.ShouldBe(initialBrowseCount + 1);
parent.Children.Count.ShouldBe(1);
parent.Children[0].DisplayName.ShouldBe("Child1");
}
[Fact]
public async Task TreeNode_SecondExpand_DoesNotBrowseAgain()
{
_service.BrowseResults = new[]
{
new BrowseResult("ns=2;s=Parent", "Parent", "Object", true)
};
await _vm.LoadRootsAsync();
_service.BrowseResults = new[]
{
new BrowseResult("ns=2;s=Child1", "Child1", "Variable", false)
};
var parent = _vm.RootNodes[0];
parent.IsExpanded = true;
await Task.Delay(50);
var browseCountAfterFirst = _service.BrowseCallCount;
parent.IsExpanded = false;
parent.IsExpanded = true;
await Task.Delay(50);
_service.BrowseCallCount.ShouldBe(browseCountAfterFirst);
}
[Fact]
public async Task TreeNode_IsLoading_TransitionsDuringBrowse()
{
_service.BrowseResults = new[]
{
new BrowseResult("ns=2;s=Parent", "Parent", "Object", true)
};
await _vm.LoadRootsAsync();
_service.BrowseResults = Array.Empty<BrowseResult>();
var parent = _vm.RootNodes[0];
parent.IsExpanded = true;
await Task.Delay(50);
// After completion, IsLoading should be false
parent.IsLoading.ShouldBeFalse();
}
}