kotlin-testing

Write Kotlin unit tests using Kotest, MockK, and Kover templates.

2|Updated May 11, 2026
One-click install
npx skills add https://github.com/himanshu231204/AI_Research_agent --skill kotlin-testing-himanshu231204
Or copy as Structured Prompt for Agentโ–ผ
Please help me install this Agent Skill.
Skill: kotlin-testing
Source: https://github.com/himanshu231204/AI_Research_agent/tree/main/.opencode/skills/kotlin-testing
Command: npx skills add https://github.com/himanshu231204/AI_Research_agent --skill kotlin-testing-himanshu231204

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill eliminates the inconsistency and maintenance burden of ad-hoc Kotlin test suites, and enables development teams to follow proven Test-Driven Development (TDD) workflows tailored to Kotlin's unique language features like coroutines and extension functions.

Core Features & Use Cases

  • TDD Workflow Templates: Step-by-step RED/GREEN/REFACTOR cycle examples for common Kotlin development tasks.
  • Kotest Pattern Library: Ready-to-use code samples for all major Kotest spec styles (StringSpec, FunSpec, BehaviorSpec, DescribeSpec) and matchers.
  • Mocking & Async Testing: Pre-built MockK patterns for dependency mocking, coroutine testing with runTest, and Flow testing.
  • Coverage & CI Integration: Kover configuration templates and GitHub Actions examples to enforce 80%+ test coverage in CI pipelines.
  • Use Case: For example, if you are building a Kotlin microservice with Ktor, use this Skill to quickly write unit tests for your route handlers and repository layers with proper mocking and coverage checks.

Quick Start

Use the kotlin-testing skill to write a complete set of unit tests for your new Kotlin data class following TDD principles, including mock setup and Kotest matchers.

Frequently Asked Questions about kotlin-testing

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I write unit tests for Kotlin coroutines using Kotest and MockK?โ–ผ

To write unit tests for Kotlin coroutines, you use the runTest API from kotlinx-coroutines-test alongside MockK patterns to mock dependencies and Kotest matchers to verify Flow emissions and async behavior.

What is the best way to apply TDD methodology in a Kotlin project?โ–ผ

The best way to apply TDD in a Kotlin project is following structured RED/GREEN/REFACTOR cycles using Kotest specs like StringSpec or BehaviorSpec to drive design before implementation.

Does Kover work with GitHub Actions to enforce Kotlin test coverage?โ–ผ

Yes, Kover works with GitHub Actions by applying configuration templates that enforce a minimum 80% test coverage threshold in your CI pipelines for Kotlin projects.

How do I test Ktor route handlers with MockK for dependency mocking?โ–ผ

You test Ktor route handlers by injecting mocked repository layers using MockK, then executing HTTP requests within Kotest spec styles to verify route behavior and responses.

Can I use BehaviorSpec to structure my Kotlin unit tests?โ–ผ

Yes, you can use BehaviorSpec to structure Kotlin unit tests, providing ready-to-use Given/When/Then patterns that align with standard TDD workflows and Kotest matchers.

Why does testing Kotlin extension functions require specific patterns?โ–ผ

Testing Kotlin extension functions requires specific patterns because they are statically resolved, necessitating targeted MockK workflows and Kotest assertions to properly mock receivers and verify interactions.