Add k6 Performance Test Project & CI Pipeline

[QualityOwl]

Summary

Adds a new k6 performance test project targeting the Restful Booker API and integrates it into a dedicated GitHub Actions pipeline.

Changes

Repository structure

• Reorganized top-level folder structure to separate functional and performance test projects

CI pipeline

• Renamed the existing functional tests workflow file for consistency
• Added run-performance-tests.yaml — triggers on push/PR to main and workflow_dispatch; uses the official grafana/setup-k6-action and grafana/run-k6-action actions; passes BASE_URL, API_USERNAME, and API_PASSWORD via repository secrets with in-script defaults as fallback

k6 performance test project (Restful.Booker.Api.PerformanceTests)

• config/environments.js — shared base URL and credentials sourced from environment variables
• config/thresholds.js — shared threshold definitions (http_req_failed < 1%, p(95) < 3s, checks > 95%)
• helpers/auth-helper.js — shared helper to obtain an auth token via POST /auth
• tests/ping-performance-tests.js — load test for GET /ping
• tests/auth-performance-tests.js — load test for POST /auth
• tests/booking-performance-tests.js — full CRUD lifecycle load test (GET, POST, GET /{id}, PUT /{id}, DELETE /{id}) with per-endpoint tagged thresholds

Testing

All three test suites pass locally against https://restful-booker.herokuapp.com:

[Copilot]

Pull request overview

Adds a new k6-based performance test suite for the Restful Booker API and wires it into GitHub Actions, while also reorganizing/renaming the existing functional test project and workflow to align with the new structure.

Changes:

• Introduced Restful.Booker.Api.PerformanceTests (k6 scripts, shared env/threshold config, auth helper) to run ping/auth/booking lifecycle load tests.
• Reorganized solution/project layout and updated the root .slnx to point at the renamed functional test project.
• Added a dedicated GitHub Actions workflow for performance tests and renamed the functional workflow for consistency.

Reviewed changes

Copilot reviewed 14 out of 25 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
Restful.Booker.Api/Restful.Booker.Api.slnx	Removes old solution location under Restful.Booker.Api/.
Restful.Booker.Api.slnx	Adds new root solution referencing the functional test project.
Restful.Booker.Api.PerformanceTests/config/environments.js	Centralizes k6 environment configuration (base URL + credentials).
Restful.Booker.Api.PerformanceTests/config/thresholds.js	Defines shared k6 thresholds for error rate, latency, and checks.
Restful.Booker.Api.PerformanceTests/helpers/auth-helper.js	Adds shared helper to obtain an auth token for k6 tests.
Restful.Booker.Api.PerformanceTests/tests/ping-performance-tests.js	Adds k6 load test for GET /ping with tagged threshold.
Restful.Booker.Api.PerformanceTests/tests/auth-performance-tests.js	Adds k6 load test for POST /auth with tagged threshold.
Restful.Booker.Api.PerformanceTests/tests/booking-performance-tests.js	Adds k6 CRUD lifecycle load test for bookings with per-endpoint thresholds.
Restful.Booker.Api.PerformanceTests/package.json	Adds convenience npm scripts to run individual/all k6 suites locally.
Restful.Booker.Api.FunctionalTests/Restful.Booker.Api.FunctionalTests.csproj	Introduces the renamed functional test project configuration and dependencies.
Restful.Booker.Api.FunctionalTests/xunit.runner.json	Adds xUnit runner configuration for the functional test project.
Restful.Booker.Api.FunctionalTests/Config/ApiSettings.cs	Adds typed configuration binding for API settings and credentials.
Restful.Booker.Api.FunctionalTests/Config/TestConfiguration.cs	Adds configuration loading/binding for functional tests.
Restful.Booker.Api.FunctionalTests/Config/appsettings.json	Adds default API settings for functional tests.
Restful.Booker.Api.FunctionalTests/Fixtures/TestFixture.cs	Adds shared fixture with HttpClient + token acquisition for functional tests.
Restful.Booker.Api.FunctionalTests/Models/*.cs	Adds DTOs for auth/booking payloads used in functional tests.
Restful.Booker.Api.FunctionalTests/Controllers/*_FunctionalTests.cs	Renames/aligns controller test classes to “FunctionalTests”.
.github/workflows/run-functional-tests.yaml	Renames workflow and adjusts permissions (but needs fixes).
.github/workflows/run-performance-tests.yaml	Adds new CI workflow to run k6 performance test suites.

Comments suppressed due to low confidence (2)

.github/workflows/run-functional-tests.yaml:13

• permissions.contents is set to reads, but valid values are read, write, or none. As written, the workflow will fail to validate/apply permissions; change it to read.
  .github/workflows/run-functional-tests.yaml:4
• This workflow still restores/builds/tests Restful.Booker.Api/Restful.Booker.Api.slnx, but the repo now has the solution at the root (Restful.Booker.Api.slnx) and no Restful.Booker.Api/ directory. Update the dotnet restore/build/test commands to use the new solution path so CI doesn't fail.