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package streams;

import org.junit.jupiter.api.Test;

import java.util.List;

import java.util.function.IntPredicate;

import static org.junit.jupiter.api.Assertions.assertEquals;

public class SumEvens {

private static final IntPredicate EVENS = n -> n % 2 == 0;

private static final IntPredicate ODDS = n -> n % 2 != 0;

@Test

public void addEvenElements() {

List<Integer> integers = List.of(3, 1, 4, 1, 5, 9, 2, 6, 5);

int sum = 0;

for (int n : integers) {

if (n % 2 == 0) {

sum += n;

}

}

assertEquals(12, sum);

}

@Test

public void addEvenElementsUsingStreams() {

}

@Test

public void addOddElementsUsingStreams() {

}

}