Effect-TS Patterns: Testing

This skill provides 10 curated Effect-TS patterns for testing. Use this skill when working on tasks related to:

• testing
• Best practices in Effect-TS applications
• Real-world patterns and solutions

🟢 Beginner Patterns

Your First Effect Test

Rule: Use Effect.runPromise in tests to run and assert on Effect results.

Good Example:

import { describe, it, expect } from "vitest"
import { Effect } from "effect"