Serchinastico

// Return the set of cities the customers are from
fun Shop.getCitiesCustomersAreFrom(): Set<City> = customers.map { it.city }.toSet()

// Return a list of the customers who live in the given city
fun Shop.getCustomersFrom(city: City): List<Customer> = customers.filter { it.city == city }

Serchinastico

// Return all products this customer has ordered
val Customer.orderedProducts: Set<Product> get() {
    return orders.flatMap { it.products }.toSet()
}

// Return all products that were ordered by at least one customer
val Shop.allOrderedProducts: Set<Product> get() {
    return customers.flatMap { it.orderedProducts }.toSet()
}

Serchinastico

// Return the set of products that were ordered by every customer
fun Shop.getSetOfProductsOrderedByEveryCustomer(): Set<Product> {
    val allProducts = customers.flatMap { it.orders.flatMap { it.products } }.toSet()
    return customers.fold(allProducts) { acc, customer ->
    	acc.intersect(customer.orders.flatMap { it.products } ) 
	}.toSet()
}

Serchinastico

// Return a map of the customers living in each city
fun Shop.groupCustomersByCity(): Map<City, List<Customer>> = 
	customers.groupBy { it.city }

Serchinastico

From cf90b931886b5414bd7db6d14eb5f7aa9a3b7329 Mon Sep 17 00:00:00 2001
From: Sergio Gutierrez <[email protected]>
Date: Wed, 3 Oct 2018 10:27:23 +0200
Subject: [PATCH] Fix facebook version in test

---
 core/src/test/scala/com/karumi/shot/domain/ConfigSpec.scala | 2 +-
 shot-consumer/build.gradle                                  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)