kostest

Kostest is not a distinct, widely recognized software project. In many contexts, the term is a misspelling or variation of Kotest, a Kotlin testing framework. When used in this form, it typically refers to the Kotlin testing framework known for its flexible DSL and extensibility.

Kotest (formerly KotlinTest) is a framework designed for writing tests in Kotlin. It provides multiple specification styles, such as StringSpec, FunSpec, DescribeSpec, ShouldSpec, WordSpec, and FreeSpec, enabling developers to express tests in different idiomatic styles. It includes a rich set of assertion matchers and supports property-based testing, data-driven tests, and test lifecycle hooks (before or after tests and test suites). The framework emphasizes readability and composability of tests and integrates with the Java and Kotlin ecosystems.

Kotest runs on the JVM and can be executed through Gradle or Maven build scripts and is designed to integrate with the JUnit Platform, allowing tests to be discovered by standard tooling and IDEs. It supports extensions and custom reporters for test discovery, filtering, parallel execution, and customized test output.

History: Kotest originated from KotlinTest and was renamed to Kotest as the project evolved, with ongoing development and community contributions continuing to expand its modules, including assertions, property testing, and runners.

See also: Kotest, Kotlin, JUnit 5, KotlinTest.