# Description
Fix source-generated configuration types whose explicit namespace
references constants emitted by the same generator pass. Roslyn cannot
resolve those constants while `[DataType]` attributes are analyzed, so
the generated XML codec silently fell back to `urn:memorybuffer` /
`urn:testdata` while the shipped configuration uses the model namespace
URIs.
This change:
- adds `MODELGEN021` to fail when an explicitly supplied
`[DataType.Namespace]` expression cannot be resolved;
- uses compile-time-available model namespace URIs for the MemoryBuffer
and TestData configuration types;
- restores production-shaped XML fixtures and exercises the
`UpdateExtension<T>()` / `ParseExtension<T>()` path;
- documents the source-generator namespace requirement and migration
guidance.
Targeted validation passed:
- `TypeGeneratorTests`: 17 tests on `net10.0` and `net48`;
- `ConfigurationRoundTripTests`: 4 tests on `net10.0` and `net48`.
## Related Issues
- Fixes#4014
## Checklist
- [ ] I have signed the
[CLA](https://opcfoundation.org/license/cla/ContributorLicenseAgreementv1.0.pdf)
and read the
[CONTRIBUTING](https://github.com/OPCFoundation/UA-.NETStandard/blob/master/CONTRIBUTING.md)
doc.
- [x] I have added tests that prove my fix is effective or that my
feature works and increased code coverage.
- [x] I have added all necessary documentation.
- [x] I have verified that my changes do not introduce (new) build or
analyzer warnings.
- [ ] I ran **all** tests locally using the **UA.slnx** solution against
at least .net **framework** and .net **10**, and all passed.
- [ ] I fixed **all** failing and flaky tests in the CI pipelines and
**all** CodeQL warnings.
- [x] I have addressed **all** PR feedback received.
## Summary
- Adds the official ISA95 JobControl 2.0.0 NodeSet2 as a complete
source-generator regression fixture.
- Extends the lightweight generated-stack test stub with
`NamespaceMetadataState`, required by the complete model.
- Adds a deterministic ManagedSession cancellation regression proving
that a started connect attempt is stopped.
The ManagedSession cleanup implementation and Quickstarts utility
coverage now come from `master`; this PR retains the additional
deterministic cleanup regression.
## ISA95 fixture provenance and integrity
The fixture is byte-for-byte the official file:
- Source:
`OPCFoundation/UA-Nodeset@e0b5d80cfff698f0276393e28df138a7fbc4b541`
- Path: `ISA95-JOBCONTROL/opc.ua.isa95-jobcontrol.nodeset2.xml`
- Git blob: `82f008cd126ade54e5f2c737bcc116621a8c3087`
- SHA-256:
`52327e736beb604c7253a5a5393d1ad525b9ecf35b71fbacb4f429cacb334064`
The fixture test retains the OPC Foundation MIT header and verifies the
2.0.0 model/date, 258 nodes (including 134 variables), representative
late variables, and that every `ns=1` reference target resolves locally.
## Validation
- ManagedSession tests: 17 passing on net10.0; 15 passing and 2
framework-gated skips on net48.
- Quickstarts server utility tests: 3 passing on net10.0 and net48.
- ISA95 generator and fixture integrity regression: 5 passing on
net10.0.
Marc Schier