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to Two Fer in the Kotlin Track

Published at Oct 19 2019 · 0 comments
Test suite

Two-fer or 2-fer is short for two for one. One for you and one for me.

Given a name, return a string with the message:

One for X, one for me.

Where X is the given name.

However, if the name is missing, return the string:

One for you, one for me.

Here are some examples:

Name String to return
Alice One for Alice, one for me.
Bob One for Bob, one for me.
One for you, one for me.
Zaphod One for Zaphod, one for me.


Go through the setup instructions for Kotlin to install the necessary dependencies:


Making the test suite pass

Execute the tests with:

$ gradlew test

Use gradlew.bat if you're on Windows

In the test suites all tests but the first have been skipped.

Once you get a test passing, you can enable the next one by removing the @Ignore annotation.



Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.


import org.junit.Ignore
import org.junit.Test
import kotlin.test.assertEquals

class TwoferTest {

    fun noNameGiven() {
        assertEquals("One for you, one for me.", twofer())

    fun aNameGiven() {
        assertEquals("One for Alice, one for me.", twofer("Alice"))

    fun anotherNameGiven() {
        assertEquals("One for Bob, one for me.", twofer("Bob"))

    fun emptyStringGiven() {
        assertEquals("One for , one for me.", twofer(""))

fun twofer(name: String = "you") = "One for $name, one for me."

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