Solution: Pizza factory
class Pizza(
val toppings: List<String>,
) {
companion object {
fun hawaiian() = Pizza(listOf("ham", "pineapple"))
fun margherita() = Pizza(listOf("tomato", "mozzarella"))
}
}
Example solution in playground
import org.junit.Test
import kotlin.test.assertEquals
class Pizza(
val toppings: List<String>,
) {
companion object {
fun hawaiian() = Pizza(listOf("ham", "pineapple"))
fun margherita() = Pizza(listOf("tomato", "mozzarella"))
}
}
fun main() {
val hawaiian = Pizza.hawaiian()
println(hawaiian.toppings) // [ham, pineapple]
val margherita = Pizza.margherita()
println(margherita.toppings) // [tomato, mozzarella]
}
class PizzaTest {
@Test
fun testHawaiian() {
val expected = listOf("ham", "pineapple")
assertEquals(expected, Pizza.hawaiian().toppings)
}
@Test
fun testMargherita() {
val expected = listOf("tomato", "mozzarella")
assertEquals(expected, Pizza.margherita().toppings)
}
}
