Files
lmxopcua/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.MTConnect.Tests/ZB.MOM.WW.OtOpcUa.Driver.MTConnect.Tests.csproj
T
Joseph Doherty 1bfc1722b3 feat(mtconnect): IReadable via /current, ordered per-ref snapshots (Task 10)
One deadline-bounded /current per batch, answered out of that one whole-device
document: N references cost one round-trip, one snapshot each, in request order,
duplicates included.

DEVIATION (deliberate, from the plan's implied shared-index write): the response
is indexed into a PER-CALL snapshot index, never into the driver's shared
observation index. That index is written by Task 11's /sample pump and is
last-write-wins with no timestamp arbitration; a read folding its /current into
it would be a second writer racing the first, and /current is frequently the
OLDER document (the Agent composes it while the pump's newer delta is in
flight). Losing that race rolls a subscribed value backwards and leaves it there
until the data item next changes. Both paths coerce through the same
MTConnectObservationIndex logic, so a read and a subscription report a given
observation identically -- the read path is simply a pure function of
(document, authored tags).

Failure posture is the inverse of InitializeAsync: nothing but genuine caller
cancellation crosses the capability boundary. Unreachable Agent / blown deadline
/ unusable answer => every ref codes BadCommunicationError and the driver
degrades (never downgrading Faulted); no client at all (pre-initialize, faulted,
post-shutdown) => BadNotConnected with health untouched. The index's
BadWaitingForInitialData / BadNodeIdUnknown / BadNoCommunication / BadNotSupported
distinctions pass through unmodified.

21 tests pinning arity, order, duplicates, empty batch, one-round-trip, each Bad
code, read-time freshness, the anti-clobber invariant, the deadline, and
cancellation-propagates-but-agent-failure-does-not. CannedAgentClient gains a
cancellation-observing CurrentGate (still no timers or sleeps of its own).
Test csproj takes the AbCip/S7 OTOPCUA0001 NoWarn -- this suite calls the
capability directly by design.

329/329 green.
2026-07-27 13:57:46 -04:00

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XML

<Project Sdk="Microsoft.NET.Sdk">
<!-- OTOPCUA0001 (arch-review 07/C-1): this suite invokes driver capability methods DIRECTLY to
exercise wire-level behavior — the analyzer's documented intentional case ("move the suppression
into a NoWarn for the test project"). Not a resilience-dispatch gap. -->
<PropertyGroup>
<NoWarn>$(NoWarn);OTOPCUA0001</NoWarn>
</PropertyGroup>
<PropertyGroup>
<TargetFramework>net10.0</TargetFramework>
<Nullable>enable</Nullable>
<ImplicitUsings>enable</ImplicitUsings>
<IsPackable>false</IsPackable>
<IsTestProject>true</IsTestProject>
<RootNamespace>ZB.MOM.WW.OtOpcUa.Driver.MTConnect.Tests</RootNamespace>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="xunit.v3"/>
<PackageReference Include="Shouldly"/>
<PackageReference Include="Microsoft.NET.Test.Sdk"/>
<PackageReference Include="xunit.runner.visualstudio">
<PrivateAssets>all</PrivateAssets>
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
</PackageReference>
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\..\..\src\Drivers\ZB.MOM.WW.OtOpcUa.Driver.MTConnect\ZB.MOM.WW.OtOpcUa.Driver.MTConnect.csproj"/>
<ProjectReference Include="..\..\..\src\Drivers\ZB.MOM.WW.OtOpcUa.Driver.MTConnect.Contracts\ZB.MOM.WW.OtOpcUa.Driver.MTConnect.Contracts.csproj"/>
</ItemGroup>
<!-- Future response-capture fixtures (agent /probe, /current, /sample XML payloads) copied
beside the test binaries so file-based tests can load them by relative path. -->
<ItemGroup>
<Content Include="Fixtures\**\*.xml">
<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
</Content>
</ItemGroup>
</Project>