test(generators): cover identity map and service layer

[JerrettDavis]

Summary

• harden Identity Map and Service Layer Operation generation for nested/typed host shapes
• expand TinyBDD scenarios with emit validation, defaults, malformed type arguments, nested hosts, and invalid signature branches
• preserve containing partial wrappers for nested generator hosts

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 96.9%, IdentityMapGenerator 99.0%, ServiceLayerOperationGenerator 99.3%

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

This PR pushes coverage of the IdentityMap and ServiceLayerOperation source generators by (a) teaching them to preserve nested containing-type partial wrappers, and (b) expanding TinyBDD scenarios to exercise emit success, defaults, malformed type arguments, nested hosts, and additional invalid handler/rule signature branches.

Changes:

• Generators now emit containing-type partial wrappers (with appropriate accessibility/modifiers) around the generated factory, via new GetContainingTypes/AppendTypeDeclaration helpers.
• Generator tests add scenarios for default names + host shapes (abstract/sealed/struct), nested hosts (including private protected / protected internal), malformed typeof arguments, and more invalid handler/rule shapes; tests now also assert Compilation.Emit success.
• GeneratorResult record is extended with EmitSuccess and EmitDiagnostics.

Reviewed changes

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

File	Description
src/PatternKit.Generators/IdentityMap/IdentityMapGenerator.cs	Emit containing-type partial wrappers and refactor type-declaration emission into helpers.
src/PatternKit.Generators/ServiceLayer/ServiceLayerOperationGenerator.cs	Same nested-wrapper emission for ServiceLayerOperation generator, with computed indents for member/body.
test/PatternKit.Generators.Tests/IdentityMapGeneratorTests.cs	New scenarios for host shapes, nested hosts, malformed type args, extra invalid selectors, and emit verification.
test/PatternKit.Generators.Tests/ServiceLayerGeneratorTests.cs	New scenarios for host shapes, nested hosts, malformed type args, extra invalid handler/rule signatures, and emit verification.

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[github-actions]

Test Results

    12 files      12 suites   11m 3s ⏱️
 3 794 tests  3 794 ✅ 0 💤 0 ❌
11 783 runs  11 783 ✅ 0 💤 0 ❌

Results for commit 9fabe58.

[github-actions]

Code Coverage

Summary
  Generated on: 05/30/2026 - 02:24:16
  Coverage date: 05/30/2026 - 02:21:44 - 05/30/2026 - 02:24:04
  Parser: MultiReport (12x Cobertura)
  Assemblies: 5
  Classes: 1616
  Files: 551
  Line coverage: 96.4%
  Covered lines: 43283
  Uncovered lines: 1577
  Coverable lines: 44860
  Total lines: 96556
  Branch coverage: 81.6% (13447 of 16475)
  Covered branches: 13447
  Total branches: 16475
  Method coverage: 96.6% (8429 of 8720)
  Full method coverage: 90% (7852 of 8720)
  Covered methods: 8429
  Fully covered methods: 7852
  Total methods: 8720

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%

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.66%. Comparing base (4596396) to head (9fabe58).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #442      +/-   ##
==========================================
+ Coverage   91.34%   96.66%   +5.32%     
==========================================
  Files         551      551              
  Lines       44820    44860      +40     
  Branches     6458     6464       +6     
==========================================
+ Hits        40941    43366    +2425     
+ Misses       1589     1494      -95     
+ Partials     2290        0    -2290     

Flag	Coverage Δ
unittests	96.66% <100.00%> (+5.32%)	⬆️

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[github-actions]

🔍 PR Validation Results

Version: ``

✅ Validation Steps

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

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