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Merge pull request #16475 from eugenp/lor6-patch-1 

remove duplicate code; article already moved to core-java-collections-6
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Loredana Crusoveanu 2024-04-23 18:02:13 +03:00 committed by GitHub
parent d14b1e1fb7 b9b9084286
commit 21a7f6794a
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core-java-modules/core-java-collections/src/test/java/com/baeldung/listiteration/ListIterationUnitTest.java
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@ -1,71 +0,0 @@
package com.baeldung.listiteration;
import org.junit.jupiter.api.Test;
import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import static org.junit.jupiter.api.Assertions.assertIterableEquals;
public class ListIterationUnitTest {
List<String> programmingLanguages = new ArrayList<>(List.of("Java", "Python", "C++"));
List<Integer> numbers = new ArrayList<>(List.of(1, 2, 3));
@Test
public void givenStringList_whenAddElementWithListIterator_thenModifiedList() {
ListIterator<String> listIterator = programmingLanguages.listIterator();
while (listIterator.hasNext()) {
String language = listIterator.next();
if (language.equals("Python")) {
listIterator.add("JavaScript");
}
}
assertIterableEquals(Arrays.asList("Java", "Python", "JavaScript", "C++"), programmingLanguages);
}
@Test
public void givenNumericalList_whenMultiplyElementWithListIterator_thenModifiedList() {
ListIterator<Integer> listIterator = numbers.listIterator();
while (listIterator.hasNext()) {
int num = listIterator.next();
if (num == 2) {
listIterator.add(num * 10);
}
}
assertIterableEquals(Arrays.asList(1, 2, 20, 3), numbers);
}
@Test
public void givenStringList_whenAddElementWithEnhancedForLoopAndCopy_thenModifiedList() {
List<String> copyOfWords = new ArrayList<>(programmingLanguages);
for (String word : copyOfWords) {
programmingLanguages.add(word.toUpperCase()); // Modified: Convert to uppercase
}
assertIterableEquals(Arrays.asList("Java", "Python", "C++", "JAVA", "PYTHON", "C++"), programmingLanguages);
}
@Test
public void givenNumericalList_whenMultiplyElementWithEnhancedForLoopAndCopy_thenModifiedList() {
List<Integer> copyOfNumbers = new ArrayList<>(numbers);
for (int num : copyOfNumbers) {
numbers.add(num * 2);
}
assertIterableEquals(Arrays.asList(1, 2, 3, 2, 4, 6), numbers);
}
@Test
public void givenStringList_whenConvertToUpperCaseWithJava8Stream_thenModifiedList() {
programmingLanguages = programmingLanguages.stream().map(String::toUpperCase).collect(Collectors.toList());
assertIterableEquals(Arrays.asList("JAVA", "PYTHON", "C++"), programmingLanguages);
}
@Test
public void givenNumericalList_whenMultiplyByThreeWithJava8Stream_thenModifiedList() {
numbers = numbers.stream().map(num -> num * 3).collect(Collectors.toList());
assertIterableEquals(Arrays.asList(3, 6, 9), numbers);
}
}