test(generators): cover event notification and envelope

[JerrettDavis]

Summary

• harden Event Notification and Message Envelope source generation for nested/typed host shapes
• convert Message Envelope generator tests onto TinyBDD xUnit scenarios
• expand diagnostics, defaults, malformed argument, and nested host coverage

Validation

• dotnet format PatternKit.slnx --verify-no-changes --verbosity minimal
• dotnet test test\PatternKit.Generators.Tests\PatternKit.Generators.Tests.csproj --configuration Release --no-restore --no-build -p:TestTfmsInParallel=false --logger "console;verbosity=minimal"
• local coverage pass: PatternKit.Generators 96.5%, EventNotificationGenerator 99.3%, MessageEnvelopeGenerator 97.7%

Refs #413

[github-actions]

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Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Scanned Files

None

[Copilot]

Pull request overview

Hardens the Event Notification and Message Envelope source generators to support nested host types (and a wider range of host shapes/accessibilities), and rewrites both generators' test suites onto TinyBDD xUnit Theory-driven scenarios that cover diagnostics, defaults, malformed inputs, and nested-host emission.

Changes:

• Generators now emit the containing partial-type wrappers via GetContainingTypes + AppendTypeDeclaration, preserving accessibility (static/abstract/sealed/private protected/protected internal) and struct/class kind for both the host and its enclosing types.
• Message Envelope tests are migrated to a TinyBddXunitBase partial class with a shared Compile helper and GeneratorResult/GeneratedSource records, mirroring the existing Event Notification test infrastructure.
• Diagnostic, default-name, host-shape, nested-host, and malformed-typeof(...) argument scenarios are added for both generators (PKEN001–004, PKME001–004).

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
src/PatternKit.Generators/Messaging/MessageEnvelopeGenerator.cs	Emit containing-type wrappers and richer accessibility/modifier handling around the envelope/context factory body.
src/PatternKit.Generators/EventNotification/EventNotificationGenerator.cs	Same nested-host wrapping/indentation overhaul for the notification factory emission.
test/PatternKit.Generators.Tests/MessageEnvelopeGeneratorTests.cs	Convert to TinyBDD scenarios with Theory diagnostic coverage and new default/nested/malformed scenarios.
test/PatternKit.Generators.Tests/EventNotificationGeneratorTests.cs	Replace multi-compile diagnostic test with per-InlineData scenarios; add defaults, nested-host, and malformed-typeof coverage.

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[github-actions]

Test Results

    12 files      12 suites   11m 17s ⏱️
 3 766 tests  3 766 ✅ 0 💤 0 ❌
11 633 runs  11 633 ✅ 0 💤 0 ❌

Results for commit 4805b51.

[codecov]

Codecov Report

❌ Patch coverage is 98.85057% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 96.52%. Comparing base (667db78) to head (4805b51).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...t.Generators/Messaging/MessageEnvelopeGenerator.cs	98.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #439      +/-   ##
==========================================
+ Coverage   90.96%   96.52%   +5.56%     
==========================================
  Files         551      551              
  Lines       44627    44723      +96     
  Branches     6426     6442      +16     
==========================================
+ Hits        40595    43171    +2576     
+ Misses       1682     1552     -130     
+ Partials     2350        0    -2350     

Flag	Coverage Δ
unittests	96.52% <98.85%> (+5.56%)	⬆️

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[github-actions]

🔍 PR Validation Results

Version: ``

✅ Validation Steps

• Build solution
• Run tests
• Build documentation
• Dry-run NuGet packaging

📊 Artifacts

Dry-run artifacts have been uploaded and will be available for 7 days.

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[github-actions]

Code Coverage

Summary
  Generated on: 05/30/2026 - 01:07:22
  Coverage date: 05/30/2026 - 01:04:54 - 05/30/2026 - 01:07:09
  Parser: MultiReport (12x Cobertura)
  Assemblies: 5
  Classes: 1616
  Files: 551
  Line coverage: 96.3%
  Covered lines: 43082
  Uncovered lines: 1641
  Coverable lines: 44723
  Total lines: 96318
  Branch coverage: 80.8% (13274 of 16422)
  Covered branches: 13274
  Total branches: 16422
  Method coverage: 96.6% (8416 of 8707)
  Full method coverage: 89.9% (7828 of 8707)
  Covered methods: 8416
  Fully covered methods: 7828
  Total methods: 8707

PatternKit.Core                                                                                                     95.4%
  PatternKit.Application.ActivityTracking.ActivityGateState                                                          100%
  PatternKit.Application.ActivityTracking.ActivityLease                                                              100%
  PatternKit.Application.ActivityTracking.ActivityRecord                                                             100%
  PatternKit.Application.ActivityTracking.ActivityTracker                                                            100%
  PatternKit.Application.Aggregates.AggregateCommandHandler<T1, T2, T3>                                              100%
  PatternKit.Application.Aggregates.AggregateCommandResult<T>                                                        100%
  PatternKit.Application.Aggregates.AggregateRoot<T1, T2>                                                            100%
  PatternKit.Application.AntiCorruption.AntiCorruptionLayer<T1, T2>                                                 90.4%
  PatternKit.Application.AntiCorruption.AntiCorruptionResult<T>                                                      100%
  PatternKit.Application.AuditLog.AuditLogAppendResult<T>                                                           85.7%
  PatternKit.Application.AuditLog.InMemoryAuditLog<T1, T2>                                                          95.4%
  PatternKit.Application.BoundedContexts.BoundedContextAdapter                                                       100%
  PatternKit.Application.BoundedContexts.BoundedContextCapability                                                   83.3%
  PatternKit.Application.BoundedContexts.BoundedContextDescriptor                                                   95.4%
  PatternKit.Application.ContextMaps.ContextMapDescriptor                                                           96.8%
  PatternKit.Application.ContextMaps.ContextMapRelationship                                                          100%
  PatternKit.Application.DataMapping.DataMapper<T1, T2>                                                             94.6%
  PatternKit.Application.DataMapping.DataMapperError                                                                  90%
  PatternKit.Application.DataMapping.DataMapperResult<T>                                                            84.6%
  PatternKit.Application.DomainEvents.DomainEventDispatcher<T>                                                      95.4%
  PatternKit.Application.DomainEvents.DomainEventDispatchResult                                                      100%
  PatternKit.Application.DomainServices.DomainServiceOperation<T1, T2>                                               100%
  PatternKit.Application.DomainServices.DomainServiceRegistry<T1, T2>                                                100%
  PatternKit.Application.EventSourcing.EventStoreAppendResult                                                        100%
  PatternKit.Application.EventSourcing.InMemoryEventStore<T1, T2>                                                   97.9%
  PatternKit.Application.EventSourcing.StoredEvent<T1, T2>                                                            80%
  PatternKit.Application.FeatureToggles.FeatureToggleDecision                                                       87.5%
  PatternKit.Application.FeatureToggles.FeatureToggleRule<T>                                                         100%
  PatternKit.Application.FeatureToggles.FeatureToggleSet<T>                                                         96.9%
  PatternKit.Application.IdentityMap.IdentityMap<T1, T2>                                                             100%
  PatternKit.Application.IdentityMap.IdentityMapResult<T>                                                           92.8%
  PatternKit.Application.MaterializedViews.MaterializedView<T1, T2>                                                 98.4%
  PatternKit.Application.Repository.InMemoryRepository<T1, T2>                                                      92.8%
  PatternKit.Application.Repository.RepositoryResult<T>                                                             93.3%
  PatternKit.Application.ServiceLayer.ServiceLayerOperation<T1, T2>                                                 96.7%
  PatternKit.Application.ServiceLayer.ServiceLayerResult<T>                                                         94.7%
  PatternKit.Application.ServiceLayer.ServiceLayerRule<T>                                                            100%
  PatternKit.Application.Specification.Specification<T>                                                              100%