kotlin-testing

Teach Kotlin testing with Kotest, MockK, coroutine, and property-based testing.

2|Updated Mar 21, 2026
One-click install
npx skills add https://github.com/Throokie/claude-code-skills --skill kotlin-testing-throokie
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: kotlin-testing
Source: https://github.com/Throokie/claude-code-skills/tree/main/skills/kotlin-testing
Command: npx skills add https://github.com/Throokie/claude-code-skills --skill kotlin-testing-throokie

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Kotlin projects often struggle to establish consistent, maintainable testing practices. This skill provides a structured approach to writing tests in Kotlin using Kotest, MockK, coroutine testing, property-based testing, and Kover coverage, aligning with TDD principles.

Core Features & Use Cases

  • Provides guidance on setting up Kotest specs (StringSpec, FunSpec, BehaviorSpec, DescribeSpec) and integrating MockK for mocks.
  • Demonstrates coroutine testing patterns, flow testing, and proper use of runTest for deterministic, fast tests.
  • Includes property-based testing examples and coverage configuration with Kover to enforce quality gates.

Quick Start

Start by applying TDD with Kotest and MockK in a sample Kotlin project to build a runnable test suite.

Frequently Asked Questions about kotlin-testing

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

FAQPage Schema
How do I set up Kotest specs like BehaviorSpec and FunSpec for Kotlin testing?

Kotlin testing with Kotest specs involves configuring styles like StringSpec, FunSpec, BehaviorSpec, and DescribeSpec to structure tests. This skill provides configuration guidance and concrete Kotlin snippets for integrating these specs into a runnable test suite.

How do I test Kotlin coroutines and flows deterministically with runTest?

Testing Kotlin coroutines and flows requires proper use of runTest to ensure deterministic, fast tests. This skill demonstrates specific coroutine testing patterns and flow testing techniques to achieve reliable asynchronous test execution.

What is the best way to integrate MockK for mocking in Kotlin TDD workflows?

Integrating MockK for mocking in Kotlin TDD workflows provides a structured approach to writing maintainable tests. The skill offers test-first workflows with concrete Kotlin snippets, showing how to effectively use MockK alongside Kotest specifications.

Does this include property-based testing examples and Kover coverage configuration?

Yes, it includes property-based testing examples and Kover coverage configuration. This allows you to implement property-based testing patterns and enforce quality gates by setting up coverage tracking within your Kotlin project.

Can I use this to establish consistent TDD practices in an existing Kotlin project?

Yes, you can use this to establish consistent TDD practices in an existing Kotlin project. It solves the problem of inconsistent testing practices by providing a structured approach using Kotest, MockK, and Kover coverage aligned with TDD principles.

Why use Kotest and MockK for Kotlin testing over other testing frameworks?

Using Kotest and MockK for Kotlin testing provides a structured approach to implementing TDD with diverse spec styles and robust mocking. This combination supports property-based testing and Kover coverage setup, ensuring maintainable and comprehensive test suites.