Coverage Summary for Class: RoundRobinIterable (com.vsevolodganin.clicktrack.utils.collection)

 package com.vsevolodganin.clicktrack.utils.collection
 
 fun <T> Iterable<T>.toRoundRobin(): Iterable<T> = RoundRobinIterable(this)
 
 fun <T> Sequence<T>.toRoundRobin(): Sequence<T> = sequence {
     while (true) {
         yieldAll(this@toRoundRobin)
     }
 }
 
 private class RoundRobinIterable<T>(private val source: Iterable<T>) : Iterable<T> {
     init {
         require(source.any()) { "Source should have at least one element" }
     }
 
     override fun iterator(): Iterator<T> = object : Iterator<T> {
         private var iterator = source.iterator()
 
         override fun hasNext(): Boolean = true
 
         override fun next(): T {
             if (!iterator.hasNext()) {
                 iterator = source.iterator()
             }
             return iterator.next()
         }
     }
 }