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Refactor CollectionsConcatenateUnitTest

This commit is contained in:
pivovarit 2016-11-27 18:26:14 +01:00
parent 9d7ad528b4
commit 678e47dc1a
1 changed files with 15 additions and 21 deletions
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36
core-java/src/test/java/org/baeldung/java/collections/CollectionsConcatenateUnitTest.java
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@ -1,21 +1,15 @@
package org.baeldung.java.collections; package org.baeldung.java.collections;
import static java.util.Arrays.asList;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.junit.Assert;
import org.junit.Test;
import com.google.common.collect.Iterables; import com.google.common.collect.Iterables;
import com.google.common.collect.Lists; import com.google.common.collect.Lists;
import org.junit.Assert;
import org.junit.Test;
import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import static java.util.Arrays.asList;
public class CollectionsConcatenateUnitTest { public class CollectionsConcatenateUnitTest {
@ -63,16 +57,16 @@ public class CollectionsConcatenateUnitTest {
Assert.assertEquals(Arrays.asList("S", "T", "U", "V"), collectionCombined); Assert.assertEquals(Arrays.asList("S", "T", "U", "V"), collectionCombined);
} }
public static <E> Iterable<E> concat(Iterable<? extends E> list1, Iterable<? extends E> list2) { public static <E> Iterable<E> concat(Iterable<? extends E> i1, Iterable<? extends E> i2) {
return new Iterable<E>() { return new Iterable<E>() {
public Iterator<E> iterator() { public Iterator<E> iterator() {
return new Iterator<E>() { return new Iterator<E>() {
protected Iterator<? extends E> listIterator = list1.iterator(); Iterator<? extends E> listIterator = i1.iterator();
protected Boolean checkedHasNext; Boolean checkedHasNext;
protected E nextValue; E nextValue;
private boolean startTheSecond; private boolean startTheSecond;
public void theNext() { void theNext() {
if (listIterator.hasNext()) { if (listIterator.hasNext()) {
checkedHasNext = true; checkedHasNext = true;
nextValue = listIterator.next(); nextValue = listIterator.next();
@ -80,7 +74,7 @@ public class CollectionsConcatenateUnitTest {
checkedHasNext = false; checkedHasNext = false;
else { else {
startTheSecond = true; startTheSecond = true;
listIterator = list2.iterator(); listIterator = i2.iterator();
theNext(); theNext();
} }
} }
@ -107,7 +101,7 @@ public class CollectionsConcatenateUnitTest {
} }
public static <E> List<E> makeListFromIterable(Iterable<E> iter) { public static <E> List<E> makeListFromIterable(Iterable<E> iter) {
List<E> list = new ArrayList<E>(); List<E> list = new ArrayList<>();
for (E item : iter) { for (E item : iter) {
list.add(item); list.add(item);
} }