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autoparams-kotlin

autoparams-kotlin is an extension designed to simplify and enhance the experience when working with Kotlin.

Install​

Maven​

For Maven, you can add the following dependency to your pom.xml:

<dependency>
  <groupId>io.github.autoparams</groupId>
  <artifactId>autoparams-kotlin</artifactId>
  <version>8.3.0</version>
</dependency>

Gradle​

For Gradle, use:

testImplementation 'io.github.autoparams:autoparams-kotlin:8.3.0'

@AutoKotlinSource​

Consider the example of a Point data class in Kotlin:

data class Point(val x: Int = 0, val y: Int = 0)

In typical test scenarios, you might want to ensure the parameters passed to your test methods aren't just default or predictable values. The autoparams-kotlin extension can assist in such cases.

Below is a demonstration using the @AutoKotlinSource annotation provided by autoparams-kotlin. This annotation automatically generates random parameters for your test methods:

@ParameterizedTest
@AutoKotlinSource
fun testMethod(point: Point) {
    assertThat(point.x).isNotEqualTo(0)
    assertThat(point.y).isNotEqualTo(0)
}

In this example, the testMethod doesn't receive a hardcoded Point object. Instead, thanks to the @AutoKotlinSource annotation, a randomized Point object is passed in, making the test more robust by ensuring it isn't biased by predetermined values.