@Test
public void test_findPriceInUSD() {
Shop s1 = shops.get(0);
String product = "MacBook 11";
Future<Double> priceInUSD =
CompletableFuture.supplyAsync(() -> s.getPrice(product))
.thenCombine(
CompletableFuture.supplyAsync(() -> ExchangeService.getRate(USD, FRANC)),
(price, rate) -> price * rate);
}
@Test
public void test_findDiscountPrices() {
long time1 =
Performance.getConsumedTime(
() -> {
List<String> discountPrices = Shop.getDiscountPricesSync(shops, "MaxBook 11");
assertEquals(shops.size(), discountPrices.size());
});
long time2 =
Performance.getConsumedTime(
() -> {
List<String> discountPrices = Shop.getDiscountPricesAsync(shops, "MaxBook 11");
assertEquals(shops.size(), discountPrices.size());
});
System.out.println("getDiscountPrices Sync: " + time1);
System.out.println("getDiscountPrices Async: " + time2);
}
@Test
public void test_findPrices() {
long time1 =
Performance.getConsumedTime(
() -> {
List<String> priceTexts = Shop.findPricesSync(shops, "MacBook 11");
assertEquals(shops.size(), priceTexts.size());
});
long time2 =
Performance.getConsumedTime(
() -> {
List<String> priceTexts =
Shop.findPricesAsyncUsingParallelStream(shops, "MacBook 11");
assertEquals(shops.size(), priceTexts.size());
});
long time3 =
Performance.getConsumedTime(
() -> {
List<String> priceTexts =
Shop.findPricesAsyncUsingCompletableFuture1(shops, "MacBook 11");
assertEquals(shops.size(), priceTexts.size());
});
long time4 =
Performance.getConsumedTime(
() -> {
List<String> priceTexts =
Shop.findPricesAsyncUsingCompletableFuture(shops, "MacBook 11");
assertEquals(shops.size(), priceTexts.size());
});
System.out.println("getPrices Sync : " + time1);
System.out.println("getPrices Async Parallel Stream : " + time2);
System.out.println("getPrices Async Completable Future: " + time3);
System.out.println("getPrices Async Completable Future with Custom Executor: " + time4);
}
@Test
public void test_supplyAllPrices() {
long start = System.nanoTime();
long time1 =
Performance.getConsumedTime(
() -> {
Shop.supplyAllPrices(
shops,
"Mac Book 13",
(price) -> {
long diff = (System.nanoTime() - start) / 1000000;
System.out.println(price + " (discounted) done in " + diff);
});
});
System.out.println("supplyAllPrices time: " + time1);
}
@Test
public void test_getPriceAsync() {
long operationTime =
Performance.getConsumedTime(
() -> {
Future<Double> futurePrice = s.getPriceAsync2("MacBook 11");
try {
double price = futurePrice.get();
System.out.println("Price " + price);
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
throw new RuntimeException(e);
}
});
System.out.println("Time: " + operationTime);
}
@Test(expected = ExecutionException.class)
public void test_getPriceAsyncException() throws ExecutionException, InterruptedException {
s.getPricesAsyncException("asdasd").get();
}