@Test
public void testDiscountWithBreadOffer() {
Offer breadOffer = new BreadOffer();
PriceCalculator priceCalculator = new PriceCalculatorImpl(new BreadOffer());
double discount =
priceCalculator
.getDiscounts(basket)
.entrySet()
.stream()
.collect(Collectors.summingDouble(Entry::getValue));
assertEquals(breadOffer.getDiscount(basket), discount, PRICE_TOLERANCE);
}
public static void main(String[] args) {
long total = colaboradores.stream().filter(c -> c.getSalario() > 5000).count();
System.out.println("total : " + total);
System.out.println("Nomes dos ricos\n");
colaboradores
.stream()
.filter(c -> c.getSalario() > 5000)
.map(c -> c.getNome())
.forEach(System.out::println);
System.out.println("\nCpf dos ricos\n");
List<String> cpfs =
colaboradores
.stream()
.filter(c -> c.getSalario() > 5000)
.map(c -> c.getCpf())
.collect(Collectors.toList());
cpfs.forEach(System.out::println);
System.out.println("\nRicos completos\n");
List<Colaborador> ricos =
colaboradores.stream().filter(c -> c.getSalario() > 5000).collect(Collectors.toList());
ricos.forEach(System.out::println);
System.out.println("\nCpf dos ricos\n");
double totalSalarios =
colaboradores
.stream()
.filter(c -> c.getSalario() > 5000)
.collect(Collectors.summingDouble(Colaborador::getSalario));
System.out.println("\nTotal dos salários " + totalSalarios);
long totalId =
colaboradores
.stream()
.filter(c -> c.getSalario() > 5000)
.collect(Collectors.summingLong(Colaborador::getId));
System.out.println("\nTotal dos ids " + totalId);
System.out.println("\nExibindo por ordem alfabética os nomes\n");
colaboradores
.stream()
.filter(c -> c.getSalario() > 5000)
.map(c -> c.getNome().toUpperCase())
.sorted()
.forEach(System.out::println);
colaboradores
.stream()
.filter(c -> c.getSalario() > 5000)
.map(c -> c.getNome().toUpperCase())
.sorted(Comparator.comparing(String::toUpperCase))
.forEach(System.out::println);
System.out.println("\nExibindo por ordem alfabética inversa os nomes\n");
colaboradores
.stream()
.filter(c -> c.getSalario() > 5000)
.sorted(Comparator.comparing(Colaborador::getNome).reversed())
.map(c -> c.getNome().toUpperCase())
.forEach(System.out::println);
}
/**
* Returns the sum of elements if the int-<code>mapper</code> provided is applied on every
* element.
*/
public default double sum(ToDoubleFunction<? super T> mapper) {
return stream().collect(Collectors.summingDouble(mapper));
}