Implements production-ready testing patterns for Elixir applications using Ecto.SQL.Sandbox and Oban.
This skill provides specialized guidance for writing and reviewing Elixir tests, focusing on database concurrency, background process handling, and suite performance. It helps developers implement modern Ecto.SQL.Sandbox patterns like manual mode with selective sharing, correctly configures Oban for testing, and enforces clean test output through log capturing. By following these standardized patterns, you can build faster, more reliable test suites that avoid common pitfalls like environment-specific logic in production code or flaky global shared modes.
Key Features
01Automated patterns for clean test output using ExUnit.CaptureLog and CaptureIO
020 GitHub stars
03Performance-oriented async test strategies to minimize suite execution time
04Optimized Ecto.SQL.Sandbox configuration using manual and selective shared modes
05Guidance on safe process supervision and automatic cleanup using start_owner!/2
06Production-grade testing strategies for Oban workers and background processes
Use Cases
01Refactoring slow or flaky Elixir test suites to use modern concurrent sandbox patterns
02Implementing integration tests for Oban workers that require database access without causing deadlocks
03Standardizing test output quality by capturing and asserting on expected logs and warnings
