feat(decorator): implemented the decorator pattern.#49
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JerrettDavis merged 1 commit intomainfrom Oct 7, 2025
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Pull Request Overview
This PR implements the decorator pattern for PatternKit, providing a fluent, allocation-light way to wrap components with layered behavior enhancements. The implementation supports before/after transformations and around wrappers for cross-cutting concerns like logging, caching, and validation.
Key changes:
- Core
Decorator<TIn, TOut>implementation with fluent builder API - Comprehensive Point of Sale example demonstrating real-world usage
- Full test coverage with TinyBDD scenarios
Reviewed Changes
Copilot reviewed 16 out of 16 changed files in this pull request and generated no comments.
Show a summary per file
| File | Description |
|---|---|
src/PatternKit.Core/Structural/Decorator/Decorator.cs |
Core decorator implementation with fluent builder pattern |
src/PatternKit.Examples/PointOfSale/ |
Complete Point of Sale example demonstrating decorator composition |
test/PatternKit.Tests/Structural/Decorator/DecoratorTests.cs |
Comprehensive test suite covering all decorator scenarios |
test/PatternKit.Examples.Tests/PointOfSale/PaymentProcessorTests.cs |
Integration tests for Point of Sale example |
docs/patterns/structural/decorator/ |
Complete documentation including examples and API reference |
src/PatternKit.Generators/packages.lock.json |
Updated dependency lockfile for additional target frameworks |
README.md |
Updated to include decorator pattern examples and table |
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Contributor
Code Coverage |
Codecov Report❌ Patch coverage is Additional details and impacted files@@ Coverage Diff @@
## main #49 +/- ##
==========================================
+ Coverage 81.96% 83.27% +1.30%
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Files 42 46 +4
Lines 2662 3252 +590
Branches 446 497 +51
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+ Hits 2182 2708 +526
- Misses 322 544 +222
+ Partials 158 0 -158
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