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This commit is contained in:
Niket Agrawal 2023-11-23 20:54:11 +05:30
parent aa357f8b64
commit 39f5de4e30
1 changed files with 8 additions and 14 deletions
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22
core-java-modules/core-java-streams-5/src/test/java/com/baeldung/streams/firstmatchingelement/FirstMatchingElementUnitTest.java
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@ -1,20 +1,20 @@
package com.baeldung.streams.firstmatchingelement;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.Assert.assertEquals;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.IntStream;
import org.apache.commons.collections4.IterableUtils;
import org.assertj.core.util.Lists;
import org.junit.Test;
import com.google.common.collect.Iterables;
public class FirstMatchingElementUnitTest {
private List<User> userList = Lists.newArrayList(new User(1, "David"), new User(2, "John"), new User(3, "Roger"), new User(4, "John"));
private List<User> userList = List.of(new User(1, "David"), new User(2, "John"), new User(3, "Roger"), new User(4, "John"));
private String searchName = "John";
@Test
@ -43,17 +43,11 @@ public class FirstMatchingElementUnitTest {
@Test
public void whenUsingTakeWhile_thenFindFirstMatchingUserIndex() {
AtomicInteger counter = new AtomicInteger(-1);
int predicateIndex = userList.stream()
.takeWhile(user -> {
counter.getAndIncrement();
return !(searchName.equals(user.getUserName()));
})
.mapToInt(user -> counter.get())
.max()
.orElse(-1);
assertEquals(1, predicateIndex + 1);
long predicateIndex = userList.stream()
.takeWhile(user -> !user.getUserName()
.equals(searchName))
.count();
assertEquals(1, predicateIndex);
}
@Test