kotlin test example with mockk

build.gradle.kts

import org.jetbrains.kotlin.gradle.tasks.KotlinCompile

plugins {
    kotlin("jvm") version "1.8.0"
    application
}

group = "me.shantiswaruptunga"
version = "1.0-SNAPSHOT"

repositories {
    mavenCentral()
}

dependencies {
    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.7.1")
    implementation("javax.xml.bind:jaxb-api:2.3.1")
    testImplementation(kotlin("test"))
    testImplementation("io.mockk:mockk:1.12.4")
}

tasks.test {
    useJUnitPlatform()
}

tasks.withType<KotlinCompile> {
    kotlinOptions.jvmTarget = "1.8"
}

application {
    mainClass.set("MainKt")
}

gradle-wrapper.properties

distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

XmlTest.kt

import io.mockk.every
import io.mockk.mockk
import org.junit.jupiter.api.Test
import org.w3c.dom.Node

class XmlTest {
    @Test
    fun test2() {
        val node1 = mockk<Node>()
        every { node1.nodeName } returns "x"
    }
}