kotlin-testing

Test Kotlin coroutines with Kotest by utilizing the runTest builder to control virtual time and manage suspension points. This approach ensures reliable execution of asynchronous code without actual delays during unit testing.

Mock dependencies in Kotlin tests using MockK, which provides idiomatic mocking capabilities tailored for Kotlin features like extension functions and coroutines. It allows defining relaxed mocks and verifying interactions effectively.

Property-based testing in Kotlin works by generating random test data through generators and asserting that specific properties hold true across all generated inputs. This technique uncovers edge cases that traditional example-based tests often miss.

Measure code coverage for a Kotlin project using Kover, which integrates with Kotlin compilers to collect execution metrics. It provides detailed reports on line and branch coverage for your test suite.

Apply TDD methodology using Kotest by following the RED-GREEN-REFACTOR cycle to write failing tests before implementation. Kotest supports multiple spec styles that accommodate this workflow for effective test-driven development.

MockK supports mocking Kotlin extension functions, providing native compatibility with Kotlin's language features. This allows developers to isolate dependencies and verify interactions for extension functions during unit testing.