This skill maps changed folders to review dimensions, enabling focused expert reviews of vstest PRs.
Folder → Dimension Routing Table
| Folder | Primary Dimensions |
|---|---|
eng/ |
Build Script & Infrastructure Hygiene, Dependency & Package Integrity, Source Build & Cross-Platform Compliance |
src/Microsoft.TestPlatform.CrossPlatEngine/ |
Parallel Execution & Scheduling Safety, Error Reporting & Diagnostic Clarity, Process Architecture & Host Resolution |
src/vstest.console/ |
RunSettings Validation & Inference, Process Architecture & Host Resolution, Environment Variable & Feature Flag Contracts |
test/Microsoft.TestPlatform.Acceptance.IntegrationTests/ |
Acceptance Test Coverage Design, Cross-TFM & Framework Resolution, Parallel Execution & Scheduling Safety |
src/Microsoft.TestPlatform.Extensions.BlameDataCollector/ |
Crash & Hang Dump Reliability, Error Reporting & Diagnostic Clarity, Environment Variable & Feature Flag Contracts |
src/testhost/ |
Testhost Assembly Loading & Resolution, Cross-TFM & Framework Resolution, Process Architecture & Host Resolution |
src/Microsoft.TestPlatform.CommunicationUtilities/ |
IPC Transport & Protocol Stability, Error Reporting & Diagnostic Clarity, Dependency & Package Integrity |
src/Microsoft.TestPlatform.ObjectModel/ |
Public API Surface Protection, Backward Compatibility & Rollback Safety, Cross-TFM & Framework Resolution |
src/package/ |
Dependency & Package Integrity, Build Script & Infrastructure Hygiene, Cross-TFM & Framework Resolution |
src/Microsoft.TestPlatform.Common/ |
Backward Compatibility & Rollback Safety, Error Reporting & Diagnostic Clarity, Null Safety & Boundary Validation |
src/Microsoft.TestPlatform.VsTestConsole.TranslationLayer/ |
IPC Transport & Protocol Stability, Error Reporting & Diagnostic Clarity, Backward Compatibility & Rollback Safety |
src/Microsoft.TestPlatform.Client/ |
IPC Transport & Protocol Stability, Backward Compatibility & Rollback Safety, Public API Surface Protection |
src/datacollector/ |
Crash & Hang Dump Reliability, Dependency & Package Integrity, Error Reporting & Diagnostic Clarity |
src/Microsoft.TestPlatform.CoreUtilities/ |
Process Architecture & Host Resolution, Environment Variable & Feature Flag Contracts, Error Reporting & Diagnostic Clarity |
src/Microsoft.TestPlatform.TestHostProvider/ |
Process Architecture & Host Resolution, Environment Variable & Feature Flag Contracts, Testhost Assembly Loading & Resolution |
Quick Reference: Dimension Summaries
| Dimension | Focus |
|---|---|
| Dependency & Package Integrity | Version conflicts, transitive deps, package content correctness |
| Cross-TFM & Framework Resolution | Multi-TFM builds, binding redirects, framework-specific behavior |
| Process Architecture & Host Resolution | x86/x64/ARM64 selection, DOTNET_ROOT propagation, muxer resolution |
| Parallel Execution & Scheduling Safety | Race conditions, lock scopes, worker slot assignment, cancellation |
| IPC Transport & Protocol Stability | Wire compatibility, connection timeouts, protocol versioning |
| Crash & Hang Dump Reliability | Dump capture under compound failures, detach timing, file validity |
| Error Reporting & Diagnostic Clarity | Actionable messages, trace formatting, exception propagation |
| Environment Variable & Feature Flag Contracts | Naming conventions, propagation, stable contract semantics |
| RunSettings Validation & Inference | Defensive XML parsing, defaults, source precedence |
| Backward Compatibility & Rollback Safety | Disable flags, version-guarded behavior, migration paths |
| Public API Surface Protection | Unintentional exposure, PublicAPI.txt management, interface evolution |
| Acceptance Test Coverage Design | Focused matrices, OS coverage, measurement-backed claims |
| Testhost Assembly Loading & Resolution | deps.json alignment, RID assets, TypeLoadException handling |
| Build Script & Infrastructure Hygiene | Exit codes, cross-platform scripts, source-build compatibility |
| Null Safety & Boundary Validation | Boundary checks, nullable annotations, defensive parsing |
| Source Build & Cross-Platform Compliance | Source-build mode, Linux/macOS paths, shell compatibility |
Common Review Scenarios
PR touches src/Microsoft.TestPlatform.CrossPlatEngine/
→ Activate: Parallel Execution & Scheduling Safety, Error Reporting & Diagnostic Clarity, Process Architecture & Host Resolution
PR modifies eng/ scripts or build infrastructure
→ Activate: Build Script & Infrastructure Hygiene, Dependency & Package Integrity, Source Build & Cross-Platform Compliance
PR changes ObjectModel public API
→ Activate: Public API Surface Protection, Backward Compatibility & Rollback Safety, Cross-TFM & Framework Resolution
PR updates CommunicationUtilities or TranslationLayer
→ Activate: IPC Transport & Protocol Stability, Backward Compatibility & Rollback Safety, Error Reporting & Diagnostic Clarity
PR modifies blame/datacollector components → Activate: Crash & Hang Dump Reliability, Environment Variable & Feature Flag Contracts, Error Reporting & Diagnostic Clarity
PR adds or bumps package dependencies → Activate: Dependency & Package Integrity, Cross-TFM & Framework Resolution, Backward Compatibility & Rollback Safety
PR touches testhost or TestHostProvider → Activate: Testhost Assembly Loading & Resolution, Process Architecture & Host Resolution, Cross-TFM & Framework Resolution
PR modifies RunSettings handling in vstest.console → Activate: RunSettings Validation & Inference, Environment Variable & Feature Flag Contracts, Backward Compatibility & Rollback Safety
Integration with @expert-reviewer
This skill provides the routing configuration that tells the expert-reviewer agent which dimensions to activate for a given PR. The agent owns the full CHECK methodology and review logic.
Invocation: Reference @expert-reviewer in a PR comment or use the pr-expert-reviewer workflow.
How routing works:
- Agent identifies changed files/folders in the PR
- This skill's routing table maps folders to applicable dimensions
- Agent activates the matched dimensions and applies their CHECK items
- Agent produces findings limited to activated dimensions only
Scope boundaries:
- This skill: folder-to-dimension mapping, dimension summaries, scenario examples
- The agent: full CHECK items, severity classification, comment formatting, review decisions
vstest-build-testskill: build/test commands (not review logic)trx-analysisskill: test result file parsing (not code review)