Marc SchierandCopilot 7b5fd1f534 Preserve nullable struct null-check semantics in UA0003 (#4039) ...

## Failure

UA0003 unwrapped `Nullable<T>` before classifying OPC UA built-in
structs. That
reported valid nullable `== null` and `!= null` checks and offered fixes
whose
`.IsNull` semantics differ from nullable-value absence.

## Fix

- Leave `System.Nullable<T>` comparisons unchanged.
- Continue reporting direct null comparisons on OPC UA structs.
- Add coverage for nullable `NodeId` and `LocalizedText` operand
orderings.

## Reference

- OPC UA .NET 2.0 migration semantics.
- Split from #4021.

## Tests

- `dotnet test
tests\Opc.Ua.MigrationAnalyzer.Tests\Opc.Ua.MigrationAnalyzer.Tests.csproj
-c Release -f net10.0 --nologo` (121 passed)
- `dotnet test
tests\Opc.Ua.MigrationAnalyzer.Tests\Opc.Ua.MigrationAnalyzer.Tests.csproj
-c Release -f net48 --nologo` (121 passed)

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

2026-07-22 04:07:45 +02:00

..

Common

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Opc.Ua.Aot.Tests

Update paths for the consolidated repository layout

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Opc.Ua.Bindings.Https.WebApi.Tests

Update paths for the consolidated repository layout

2026-07-16 06:26:05 +02:00

Opc.Ua.Client.ComplexTypes.Tests

Update paths for the consolidated repository layout

2026-07-16 06:26:05 +02:00

Opc.Ua.Client.TestFramework

Fix unordered server endpoint validation (#4029)

2026-07-20 08:17:34 +02:00

Opc.Ua.Client.Tests

Fix AliasName subcategory browse continuation (#4040)

2026-07-21 17:55:15 +02:00

Opc.Ua.Configuration.Tests

Add MinimalClient - lightweight OPC UA console client with fluent API (#4006)

2026-07-17 19:36:53 +02:00

Opc.Ua.Core.Diagnostics.Tests

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2026-07-16 06:26:05 +02:00

Opc.Ua.Core.Encoders.Tests

CTT follow-up: monitored items, alarms, codecs, history, and model validation (#4002)

2026-07-18 05:01:03 +02:00

Opc.Ua.Core.Schema.Tests

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Opc.Ua.Core.Security.Tests

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Opc.Ua.Core.TestFramework

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Opc.Ua.Core.Tests

Default TransportQuotas in ApplicationConfiguration.ValidateAsync to prevent server-start NullReferenceException (#4055)

2026-07-21 20:55:13 +02:00

Opc.Ua.Di.Tests

Change PumpDeviceIntegrationServer to use PumpType (#4066)

2026-07-22 04:06:03 +02:00

Opc.Ua.Features.Tests

fix: return BadInvalidState for unlatched alarm reset (#4020)

2026-07-18 21:45:32 +02:00

Opc.Ua.Gds.Tests

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2026-07-16 06:26:05 +02:00

Opc.Ua.History.Tests

fix(server): enforce published HistoryUpdate operation limits (#4034)

2026-07-21 20:24:31 +02:00

Opc.Ua.InformationModel.Tests

Set ContinuationPoint (when browse is finished) to null instead of empty array, align with existing 1.5.xxx behavior (#4057)

2026-07-21 20:54:19 +02:00

Opc.Ua.Lds.Tests

Require exact LDS certificate ApplicationUri registration (OPC 10000-4) (#4052)

2026-07-22 04:06:33 +02:00

Opc.Ua.MigrationAnalyzer.Core.Tests

Update paths for the consolidated repository layout

2026-07-16 06:26:05 +02:00

Opc.Ua.MigrationAnalyzer.Tests

Preserve nullable struct null-check semantics in UA0003 (#4039)

2026-07-22 04:07:45 +02:00

Opc.Ua.PubSub.Adapter.Tests

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Opc.Ua.PubSub.Diagnostics.Tests

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Opc.Ua.PubSub.Eth.Tests

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Opc.Ua.PubSub.Kafka.Tests

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Opc.Ua.PubSub.Mqtt.Tests

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Opc.Ua.PubSub.Schema.Tests

Update paths for the consolidated repository layout

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Opc.Ua.PubSub.Server.Tests

Update paths for the consolidated repository layout

2026-07-16 06:26:05 +02:00

Opc.Ua.PubSub.Tests

Harden PubSub replay, Action, and DTLS security (OPC 10000-14 / RFC 9147) (#4044)

2026-07-21 19:54:45 +02:00

Opc.Ua.PubSub.Udp.Tests

Harden PubSub replay, Action, and DTLS security (OPC 10000-14 / RFC 9147) (#4044)

2026-07-21 19:54:45 +02:00

Opc.Ua.Redundancy.Client.Tests

Update paths for the consolidated repository layout

2026-07-16 06:26:05 +02:00

Opc.Ua.Redundancy.Kubernetes.Tests

Self-fence Kubernetes Lease leadership using monotonic time (#4042)

2026-07-21 11:28:44 +02:00

Opc.Ua.Redundancy.PubSub.Tests

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Opc.Ua.Redundancy.Samples.Tests

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2026-07-16 06:26:05 +02:00

Opc.Ua.Redundancy.Server.Tests

Restore coherent durable Subscription snapshots (OPC 10000-4) (#4045)

2026-07-21 20:46:27 +02:00

Opc.Ua.Security.Certificates.Tests

Validate HTTPS client trust and CRL algorithms (OPC UA HTTPS / RFC 5280) (#4027)

2026-07-21 20:47:40 +02:00

Opc.Ua.Server.TestFramework

Update paths for the consolidated repository layout

2026-07-16 06:26:05 +02:00

Opc.Ua.Server.Tests

Set ContinuationPoint (when browse is finished) to null instead of empty array, align with existing 1.5.xxx behavior (#4057)

2026-07-21 20:54:19 +02:00

Opc.Ua.Sessions.Tests

Update paths for the consolidated repository layout

2026-07-16 06:26:05 +02:00

Opc.Ua.SourceGeneration.Core.Tests

Source generator: support compiled companion models and safe NodeState writes (#4063)

2026-07-21 20:48:44 +02:00

Opc.Ua.SourceGeneration.Stack.Tests

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2026-07-16 06:26:05 +02:00

Opc.Ua.SourceGeneration.Tests

Fix generated configuration namespace resolution (#4019)

2026-07-18 20:15:49 +02:00

Opc.Ua.Stress.Tests

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2026-07-16 06:26:05 +02:00

Opc.Ua.Subscriptions.Classic.Tests

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Opc.Ua.Subscriptions.Durable.Tests

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Opc.Ua.Subscriptions.Tests

CTT follow-up: monitored items, alarms, codecs, history, and model validation (#4002)

2026-07-18 05:01:03 +02:00

Opc.Ua.Test.Common

Update paths for the consolidated repository layout

2026-07-16 06:26:05 +02:00

Opc.Ua.Tools.Tests

Protect certificate and identity secrets in MCP and durable samples (OPC 10000-4 security) (#4043)

2026-07-21 11:26:25 +02:00

Opc.Ua.Types.Tests

CTT follow-up: monitored items, alarms, codecs, history, and model validation (#4002)

2026-07-18 05:01:03 +02:00

Opc.Ua.WotCon.Tests

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benchmarks.cmd

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codecoverage.cmd

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codecoverage.sh

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coverlet.runsettings.xml

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customtest.bat

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