Phase 2 Stream D Option B — archive v1 surface + new Driver.Galaxy.E2E parity suite. Non-destructive intermediate state: the v1 OtOpcUa.Host + Historian.Aveva + Tests + IntegrationTests projects all still build (494 v1 unit + 6 v1 integration tests still pass when run explicitly), but solution-level dotnet test ZB.MOM.WW.OtOpcUa.slnx now skips them via IsTestProject=false on the test projects + archive-status PropertyGroup comments on the src projects. The destructive deletion is reserved for Phase 2 PR 3 with explicit operator review per CLAUDE.md "only use destructive operations when truly the best approach". tests/ZB.MOM.WW.OtOpcUa.Tests/ renamed via git mv to tests/ZB.MOM.WW.OtOpcUa.Tests.v1Archive/; csproj <AssemblyName> kept as the original ZB.MOM.WW.OtOpcUa.Tests so v1 OtOpcUa.Host's [InternalsVisibleTo("ZB.MOM.WW.OtOpcUa.Tests")] still matches and the project rebuilds clean. tests/ZB.MOM.WW.OtOpcUa.IntegrationTests gets <IsTestProject>false</IsTestProject>. src/ZB.MOM.WW.OtOpcUa.Host + src/ZB.MOM.WW.OtOpcUa.Historian.Aveva get PropertyGroup archive-status comments documenting they're functionally superseded but kept in-build because cascading dependencies (Historian.Aveva → Host; IntegrationTests → Host) make a single-PR deletion high blast-radius. New tests/ZB.MOM.WW.OtOpcUa.Driver.Galaxy.E2E/ project (.NET 10) with ParityFixture that spawns OtOpcUa.Driver.Galaxy.Host.exe (net48 x86) as a Process.Start subprocess with OTOPCUA_GALAXY_BACKEND=db env vars, awaits 2s for the PipeServer to bind, then exposes a connected GalaxyProxyDriver; skips on non-Windows / Administrator shells (PipeAcl denies admins per decision #76) / ZB unreachable / Host EXE not built — each skip carries a SkipReason string the test method reads via Assert.Skip(SkipReason). RecordingAddressSpaceBuilder captures every Folder/Variable/AddProperty registration so parity tests can assert on the same shape v1 LmxNodeManager produced. HierarchyParityTests (3) — Discover returns gobjects with attributes; attribute full references match the tag.attribute Galaxy reference grammar; HistoryExtension flag flows through correctly. StabilityFindingsRegressionTests (4) — one test per 2026-04-13 stability finding from commits c76ab8f and 7310925: phantom probe subscription doesn't corrupt unrelated host status; HostStatusChangedEventArgs structurally carries a specific HostName + OldState + NewState (event signature mathematically prevents the v1 cross-host quality-clear bug); all GalaxyProxyDriver capability methods return Task or Task<T> (sync-over-async would deadlock OPC UA stack thread); AcknowledgeAsync completes before returning (no fire-and-forget background work that could race shutdown). Solution test count: 470 pass / 7 skip (E2E on admin shell) / 1 pre-existing Phase 0 baseline. Run archived suites explicitly: dotnet test tests/ZB.MOM.WW.OtOpcUa.Tests.v1Archive (494 pass) + dotnet test tests/ZB.MOM.WW.OtOpcUa.IntegrationTests (6 pass). docs/v2/V1_ARCHIVE_STATUS.md inventories every archived surface with run-it-explicitly instructions + a 10-step deletion plan for PR 3 + rollback procedure (git revert restores all four projects). docs/v2/implementation/exit-gate-phase-2-final.md supersedes the two partial-exit docs with the per-stream status table (A/B/C/D/E all addressed, D split across PR 2/3 per safety protocol), the test count breakdown, fresh adversarial review of PR 2 deltas (4 new findings: medium IsTestProject=false safety net loss, medium structural-vs-behavioral stability tests, low backend=db default, low Process.Start env inheritance), the 8 carried-forward findings from exit-gate-phase-2.md, the recommended PR order (1 → 2 → 3 → 4). docs/v2/implementation/pr-2-body.md is the Gitea web-UI paste-in for opening PR 2 once pushed.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Joseph Doherty
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using System;
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using System.Threading.Tasks;
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using Shouldly;
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using Xunit;
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using ZB.MOM.WW.OtOpcUa.Host.Configuration;
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using ZB.MOM.WW.OtOpcUa.Host.Domain;
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using ZB.MOM.WW.OtOpcUa.Host.Metrics;
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using ZB.MOM.WW.OtOpcUa.Host.MxAccess;
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using ZB.MOM.WW.OtOpcUa.Tests.Helpers;
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namespace ZB.MOM.WW.OtOpcUa.Tests.MxAccess
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{
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/// <summary>
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/// Verifies MXAccess client read and write behavior against the fake runtime proxy used by the bridge.
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/// </summary>
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public class MxAccessClientReadWriteTests : IDisposable
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{
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private readonly MxAccessClient _client;
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private readonly PerformanceMetrics _metrics;
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private readonly FakeMxProxy _proxy;
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private readonly StaComThread _staThread;
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/// <summary>
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/// Initializes the COM-threaded MXAccess test fixture with a fake runtime proxy and metrics collector.
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/// </summary>
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public MxAccessClientReadWriteTests()
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{
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_staThread = new StaComThread();
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_staThread.Start();
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_proxy = new FakeMxProxy();
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_metrics = new PerformanceMetrics();
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var config = new MxAccessConfiguration { ReadTimeoutSeconds = 2, WriteTimeoutSeconds = 2 };
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_client = new MxAccessClient(_staThread, _proxy, config, _metrics);
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}
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/// <summary>
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/// Disposes the MXAccess client fixture and its supporting STA thread and metrics collector.
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/// </summary>
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public void Dispose()
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{
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_client.Dispose();
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_staThread.Dispose();
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_metrics.Dispose();
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}
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/// <summary>
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/// Confirms that reads fail with bad-not-connected quality when the runtime session is offline.
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/// </summary>
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[Fact]
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public async Task Read_NotConnected_ReturnsBad()
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{
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var result = await _client.ReadAsync("Tag.Attr");
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result.Quality.ShouldBe(Quality.BadNotConnected);
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}
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/// <summary>
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/// Confirms that a runtime data-change callback completes a pending read with the published value.
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/// </summary>
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[Fact]
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public async Task Read_ReturnsValueOnDataChange()
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{
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await _client.ConnectAsync();
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// Start read in background
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var readTask = _client.ReadAsync("TestTag.Attr");
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// Give it a moment to set up subscription, then simulate data change
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await Task.Delay(50);
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_proxy.SimulateDataChangeByAddress("TestTag.Attr", 42);
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var result = await readTask;
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result.Value.ShouldBe(42);
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result.Quality.ShouldBe(Quality.Good);
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}
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/// <summary>
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/// Confirms that reads time out with bad communication-failure quality when the runtime never responds.
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/// </summary>
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[Fact]
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public async Task Read_Timeout_ReturnsBadCommFailure()
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{
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await _client.ConnectAsync();
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// No data change simulated, so it will timeout
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var result = await _client.ReadAsync("TestTag.Attr");
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result.Quality.ShouldBe(Quality.BadCommFailure);
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}
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/// <summary>
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/// Confirms that timed-out reads are recorded as failed read operations in the metrics collector.
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/// </summary>
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[Fact]
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public async Task Read_Timeout_RecordsFailedMetrics()
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{
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await _client.ConnectAsync();
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var result = await _client.ReadAsync("TestTag.Attr");
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result.Quality.ShouldBe(Quality.BadCommFailure);
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var stats = _metrics.GetStatistics();
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stats.ShouldContainKey("Read");
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stats["Read"].TotalCount.ShouldBe(1);
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stats["Read"].SuccessCount.ShouldBe(0);
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}
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/// <summary>
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/// Confirms that writes are rejected when the runtime session is not connected.
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/// </summary>
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[Fact]
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public async Task Write_NotConnected_ReturnsFalse()
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{
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var result = await _client.WriteAsync("Tag.Attr", 42);
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result.ShouldBe(false);
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}
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/// <summary>
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/// Confirms that successful runtime write acknowledgments return success and record the written payload.
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/// </summary>
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[Fact]
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public async Task Write_Success_ReturnsTrue()
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{
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await _client.ConnectAsync();
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_proxy.WriteCompleteStatus = 0;
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var result = await _client.WriteAsync("TestTag.Attr", 42);
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result.ShouldBe(true);
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_proxy.WrittenValues.ShouldContain(w => w.Address == "TestTag.Attr" && (int)w.Value == 42);
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}
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/// <summary>
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/// Confirms that MXAccess error codes on write completion are surfaced as failed writes.
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/// </summary>
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[Fact]
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public async Task Write_ErrorCode_ReturnsFalse()
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{
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await _client.ConnectAsync();
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_proxy.WriteCompleteStatus = 1012; // Wrong data type
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var result = await _client.WriteAsync("TestTag.Attr", "bad_value");
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result.ShouldBe(false);
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}
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/// <summary>
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/// Confirms that write timeouts are recorded as failed write operations in the metrics collector.
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/// </summary>
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[Fact]
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public async Task Write_Timeout_ReturnsFalse_AndRecordsFailedMetrics()
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{
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await _client.ConnectAsync();
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_proxy.SkipWriteCompleteCallback = true;
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var result = await _client.WriteAsync("TestTag.Attr", 42);
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result.ShouldBe(false);
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var stats = _metrics.GetStatistics();
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stats.ShouldContainKey("Write");
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stats["Write"].TotalCount.ShouldBe(1);
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stats["Write"].SuccessCount.ShouldBe(0);
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}
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/// <summary>
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/// Confirms that successful reads contribute a read entry to the metrics collector.
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/// </summary>
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[Fact]
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public async Task Read_RecordsMetrics()
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{
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await _client.ConnectAsync();
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var readTask = _client.ReadAsync("TestTag.Attr");
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await Task.Delay(50);
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_proxy.SimulateDataChangeByAddress("TestTag.Attr", 1);
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await readTask;
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var stats = _metrics.GetStatistics();
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stats.ShouldContainKey("Read");
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stats["Read"].TotalCount.ShouldBe(1);
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}
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/// <summary>
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/// Confirms that writes contribute a write entry to the metrics collector.
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/// </summary>
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[Fact]
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public async Task Write_RecordsMetrics()
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{
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await _client.ConnectAsync();
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await _client.WriteAsync("TestTag.Attr", 42);
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var stats = _metrics.GetStatistics();
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stats.ShouldContainKey("Write");
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stats["Write"].TotalCount.ShouldBe(1);
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}
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}
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}
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