feat(#821): ktor works with any dependency provider, and also with ktor-di with auto detection

[osoykan]

implements #821

[Copilot]

Pull request overview

This PR adds flexible dependency injection support to Stove's Ktor testing module, allowing it to work with Koin, Ktor-DI, or custom DI frameworks. Previously, only Koin was supported. The implementation uses auto-detection based on classpath availability and provides an extensibility point for custom resolvers.

Key Changes:

• Introduced DI abstraction layer with DependencyResolver type alias and DependencyResolvers object for auto-detection
• Made Koin and Ktor-DI compileOnly dependencies to allow users to bring their preferred DI system
• Created shared test fixtures and separate test modules for both Koin and Ktor-DI to validate the implementation

Reviewed changes

Copilot reviewed 19 out of 23 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
starters/ktor/stove-ktor-testing-e2e/src/main/kotlin/com/trendyol/stove/testing/e2e/DependencyResolvers.kt	New file defining resolver abstraction and implementations for Koin, Ktor-DI, and auto-detection
starters/ktor/stove-ktor-testing-e2e/src/main/kotlin/com/trendyol/stove/testing/e2e/KtorDiCheck.kt	New utility for runtime classpath detection of DI frameworks
starters/ktor/stove-ktor-testing-e2e/src/main/kotlin/com/trendyol/stove/testing/e2e/KtorBridgeSystem.kt	Updated to accept custom resolver with default auto-detection
starters/ktor/stove-ktor-testing-e2e/build.gradle.kts	Changed Koin and Ktor-DI dependencies from implementation to compileOnly
starters/ktor/tests/ktor-test-fixtures/*	New shared test fixtures module with common test domain and abstract test class
starters/ktor/tests/ktor-koin-tests/*	New test module demonstrating Koin integration
starters/ktor/tests/ktor-di-tests/*	New test module demonstrating Ktor-DI integration
settings.gradle.kts	Added three new test modules to the build
gradle/libs.versions.toml	Added ktor-server-di library reference
docs/release-notes/0.20.0.md	Documented the new DI flexibility feature with usage examples
build.gradle.kts	Excluded new test modules from API validation
starters/ktor/stove-ktor-testing-e2e/api/stove-ktor-testing-e2e.api	Updated API signatures to reflect new resolver parameter

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[codecov]

Codecov Report

❌ Patch coverage is 85.36585% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 78.65%. Comparing base (f874b55) to head (e50257f).
⚠️ Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
.../trendyol/stove/testing/e2e/DependencyResolvers.kt	47.05%	5 Missing and 4 partials ⚠️
.../trendyol/stove/testing/e2e/system/BridgeSystem.kt	50.00%	1 Missing and 1 partial ⚠️
...com/trendyol/stove/testing/e2e/KtorBridgeSystem.kt	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #937      +/-   ##
==========================================
+ Coverage   78.56%   78.65%   +0.09%     
==========================================
  Files         117      121       +4     
  Lines        3848     3926      +78     
  Branches      323      329       +6     
==========================================
+ Hits         3023     3088      +65     
- Misses        631      640       +9     
- Partials      194      198       +4     

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