Strikt

Strikt is an assertion library for Kotlin intended for use with a test runner such as JUnit, Minutest, Spek, or KotlinTest.

Strikt uses a fluent assertion style similar to AssertJ but leverages Kotlin’s type system and extension functions rather than needing a complex hierarchy of assertion builder classes.

Strikt is under development, but 100% usable.
The API may change until a version 1.0 is released.
Any suggestions, issue reports, contributions, or feedback are very welcome.

Installation

Strikt is available from Maven Central.

repositories {
  mavenCentral()
}
dependencies {
  testImplementation("io.strikt:strikt-core:<version>")
}

See the button below or releases/latest for the current version number.

Additional Libraries

Strikt has the following additional libraries:

strikt-arrow — supports data types from the Arrow functional programming library.
strikt-jackson — supports the Jackson JSON library.
strikt-jvm — supports types from the Java SDK.
strikt-mockk — supports types from the MockK library.
strikt-protobuf — supports Protobuf / gRPC.
strikt-spring — supports the Spring Framework.

Versions are synchronized with the core Strikt library.

To install additional libraries include dependencies in your Gradle build.
For example:

dependencies {
  testImplementation("io.strikt:strikt-jvm:<version>")
}

Bill of Materials

Strikt supplies a BOM that is useful for aligning versions when using more than one Strikt module.

dependencies {
  // BOM dependency
  testImplementation(platform("io.strikt:strikt-bom:<version>"))
  // Versions can be omitted as they are supplied by the BOM
  testImplementation("io.strikt:strikt-jackson")
  testImplementation("io.strikt:strikt-jvm")
  testImplementation("io.strikt:strikt-spring")
}

Using Strikt

Please see the project documentation and API docs.

Community

Join the #strikt channel on the Kotlin Slack.

Follow @stri_kt on Twitter for updates and release notifications.