How to write unit tests in Kotlin

Dependency

First you need to add the following dependency to your build.gradle file

dependencies {

    testImplementation 'org.jetbrains.kotlin:kotlin-test'

As a second step you need to add the task

test {
    useJUnitPlatform()
}

Implementation

When you are familiar with JUnit you may recognized the @Test annotation.

Assertions work pretty much the same. You can choose from a variety of assert functions.

import kotlin.test.Test
import kotlin.test.assertEquals
import kotlin.test.assertTrue

internal class TestCC06 {

    @Test
    fun testPasswordLength() {
        val myPassword: String = generatePassword()
        assertEquals(8, myPassword.length)
    }
    @Test
    fun testPasswordHasDigit() {
        val myPassword: String = generatePassword()
        var hasDigit = false
        println(myPassword)
        for (c in myPassword){
            if(c.isDigit()){
                hasDigit = true
            }
        }
        assertTrue(hasDigit)
    }