kotlin-testing

Write Kotlin test suites using Kotest, MockK, and Kover.

Updated Mar 27, 2026
One-click install
npx skills add https://github.com/emiled16/close-to-me --skill kotlin-testing-emiled16
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: kotlin-testing
Source: https://github.com/emiled16/close-to-me/tree/main/.codex/skills/kotlin-testing
Command: npx skills add https://github.com/emiled16/close-to-me --skill kotlin-testing-emiled16

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps Kotlin developers write dependable tests without fighting inconsistent styles, fragile mocks, or unclear coverage goals. It turns test creation into a guided workflow that supports TDD and maintainable quality checks.

Core Features & Use Cases

  • Kotest Spec Selection: Choose the right spec style for unit, integration, or behavior-focused tests.
  • MockK Isolation: Mock collaborators cleanly, including suspending dependencies and argument capture.
  • Coroutine and Flow Testing: Verify async behavior with controlled dispatchers, delays, and emissions.
  • Property-Based Testing: Validate pure functions and data roundtrips across many generated inputs.
  • Coverage and CI Guidance: Track and enforce coverage targets with Kover in local and automated builds.
  • Use Case: A Kotlin team adding a new service can start with a failing test, mock external dependencies, validate coroutine logic, and confirm coverage before merging.

Quick Start

Use the kotlin-testing skill to design Kotest tests for your Kotlin codebase, mock dependencies with MockK, and verify coroutine behavior and coverage in a TDD workflow.

Frequently Asked Questions about kotlin-testing

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

FAQPage Schema
How do I write Kotlin tests for coroutines and Flows using Kotest?

Kotlin tests for coroutines and Flows verify async behavior with controlled dispatchers, delays, and emissions. This workflow uses Kotest and MockK to isolate suspending dependencies, ensuring reliable validation of concurrent logic and data streams.

What is the best way to isolate dependencies when testing Kotlin applications?

Dependency isolation in Kotlin testing is best achieved using MockK to cleanly mock collaborators. This approach supports capturing arguments and mocking suspending dependencies, ensuring that unit tests remain focused and reliable without external side effects.

How do I enforce code coverage targets in a Kotlin project with Kover?

Code coverage targets in Kotlin projects are enforced by integrating Kover into local and automated CI builds. This tracks test coverage metrics, ensuring that merged code satisfies predefined coverage requirements before deployment.

Can I use property-based testing to validate pure functions in Kotlin?

Property-based testing in Kotlin validates pure functions and data roundtrips across many automatically generated inputs. This technique exposes edge cases by verifying that specific properties hold true for a wide range of generated data scenarios.

Does this testing workflow support TDD-driven test design for new Kotlin services?

This testing workflow fully supports TDD-driven test design for new Kotlin services. Developers can start with a failing test, mock external dependencies, validate coroutine logic, and confirm coverage before merging code.