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Add Testcases (#86)

This commit is contained in:
dota17 2019-09-30 21:15:02 +08:00 committed by Gary Gregory
parent 3fa9e323af
commit c86c01a2e2
1 changed files with 264 additions and 22 deletions
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260
src/test/java/org/apache/commons/collections4/IteratorUtilsTest.java
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@ -17,6 +17,7 @@
package org.apache.commons.collections4;
import static org.apache.commons.collections4.functors.EqualPredicate.equalPredicate;
import static org.apache.commons.collections4.functors.TruePredicate.INSTANCE;
import static org.easymock.EasyMock.createMock;
import static org.easymock.EasyMock.expect;
import static org.easymock.EasyMock.replay;
@ -27,6 +28,7 @@ import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
@ -39,15 +41,13 @@ import java.util.ListIterator;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.Vector;
import java.util.Dictionary;
import java.util.Enumeration;
import java.util.Set;
import java.util.LinkedHashSet;
import org.apache.commons.collections4.iterators.EmptyIterator;
import org.apache.commons.collections4.iterators.EmptyListIterator;
import org.apache.commons.collections4.iterators.EmptyMapIterator;
import org.apache.commons.collections4.iterators.EmptyOrderedIterator;
import org.apache.commons.collections4.iterators.EmptyOrderedMapIterator;
import org.apache.commons.collections4.iterators.EnumerationIterator;
import org.apache.commons.collections4.iterators.NodeListIterator;
import org.apache.commons.collections4.iterators.ObjectArrayIterator;
import org.apache.commons.collections4.iterators.*;
import org.apache.commons.collections4.map.EntrySetToMapIteratorAdapter;
import org.junit.Before;
import org.junit.Test;
import org.w3c.dom.Node;
@ -850,6 +850,7 @@ public class IteratorUtilsTest {
final Node[] nodes = createNodes();
final NodeList nodeList = createNodeList(nodes);
assertTrue("returns empty iterator when null passed", IteratorUtils.getIterator(null) instanceof EmptyIterator);
assertTrue("returns Iterator when Iterator directly ", IteratorUtils.getIterator(iterableA.iterator()) instanceof Iterator);
assertTrue("returns Iterator when iterable passed", IteratorUtils.getIterator(iterableA) instanceof Iterator);
@ -857,7 +858,12 @@ public class IteratorUtilsTest {
assertTrue("returns Iterator when Map passed", IteratorUtils.getIterator(inMap) instanceof Iterator);
assertTrue("returns NodeListIterator when nodeList passed", IteratorUtils.getIterator(nodeList) instanceof NodeListIterator);
assertTrue("returns EnumerationIterator when Enumeration passed", IteratorUtils.getIterator(new Vector().elements()) instanceof EnumerationIterator);
Node node1 = createMock(Node.class);
assertTrue("returns NodeListIterator when nodeList passed", IteratorUtils.getIterator(node1) instanceof NodeListIterator);
Dictionary dic = createMock(Dictionary.class);
assertTrue("returns EnumerationIterator when Dictionary passed", IteratorUtils.getIterator(dic) instanceof EnumerationIterator);
int[] arr = new int[8];
assertTrue("returns ArrayIterator when array passed", IteratorUtils.getIterator(arr) instanceof ArrayIterator);
}
@Test
@ -900,6 +906,13 @@ public class IteratorUtilsTest {
// single use iterator
assertFalse("should not be able to iterate twice", IteratorUtils.asIterable(iterator).iterator().hasNext());
try {
IteratorUtils.nodeListIterator((Node)null);
fail("Expecting NullPointerException");
} catch (final NullPointerException ex) {
// success
}
}
/**
@ -922,6 +935,13 @@ public class IteratorUtilsTest {
// single use iterator
assertFalse("should not be able to iterate twice", IteratorUtils.asIterable(iterator).iterator().hasNext());
try {
IteratorUtils.nodeListIterator((NodeList)null);
fail("Expecting NullPointerException");
} catch (final NullPointerException ex) {
// success
}
}
@Test
@ -973,6 +993,21 @@ public class IteratorUtilsTest {
list.add(null);
final List<Object> result = IteratorUtils.toList(list.iterator());
assertEquals(list, result);
//add
try {
IteratorUtils.toList(null,10);
fail("Expecting NullPointerException");
} catch (final NullPointerException ex) {
// success
}
try {
IteratorUtils.toList(list.iterator(),-1);
fail("Expecting IllegalArgumentException");
} catch (final IllegalArgumentException ex) {
// success
}
}
@Test
@ -1165,4 +1200,211 @@ public class IteratorUtilsTest {
assertTrue(listIterator.hasNext());
}
@Test(expected=NullPointerException.class)
public void testPushBackIterator(){
ArrayList arrayList = new ArrayList();
Iterator ie = arrayList.iterator();
assertTrue("create instance fail",IteratorUtils.pushbackIterator(ie) instanceof Iterator);
IteratorUtils.pushbackIterator(null);
}
@Test(expected=NullPointerException.class)
public void testPeekingIterator(){
ArrayList arrayList = new ArrayList();
Iterator ie = arrayList.iterator();
assertTrue("create instance fail",IteratorUtils.peekingIterator(ie) instanceof Iterator);
IteratorUtils.peekingIterator(null);
}
@Test(expected=NullPointerException.class)
public void testUnmodifiableMapIterator(){
Set<?> set = new LinkedHashSet<>();
final MapIterator ie = (MapIterator) new EntrySetToMapIteratorAdapter(set);
assertTrue("create instance fail", IteratorUtils.unmodifiableMapIterator(ie) instanceof MapIterator);
IteratorUtils.unmodifiableMapIterator(null);
}
@Test
public void testChainedIterator(){
ArrayList arrayList = new ArrayList();
Iterator ie = arrayList.iterator();
assertTrue("create instance fail", IteratorUtils.chainedIterator(ie) instanceof Iterator);
final Collection<Iterator<?>> coll = new ArrayList();
assertTrue("create instance fail", IteratorUtils.chainedIterator(coll) instanceof Iterator);
}
@Test
public void testSingletonIterator(){
assertTrue("create instance fail",
IteratorUtils.singletonIterator(new Object()) instanceof ResettableIterator);
}
@Test
public void testSingletonListIterator(){
assertTrue("create instance fail",
IteratorUtils.singletonListIterator(new Object()) instanceof Iterator);
}
@Test(expected=NullPointerException.class)
public void testAsEnumerationNull(){
IteratorUtils.asEnumeration(null);
}
@Test
public void testObjectGraphIterator(){
assertTrue("create instance fail",
IteratorUtils.objectGraphIterator(null, null) instanceof Iterator);
}
@Test
public void testZippingIterator(){
ArrayList arrayList = new ArrayList();
Iterator ie = arrayList.iterator();
assertTrue("create instance fail", IteratorUtils.zippingIterator(ie, ie,ie) instanceof ZippingIterator);
assertTrue("create instance fail", IteratorUtils.zippingIterator(ie, ie) instanceof ZippingIterator);
}
@Test
public void testFilteredIterator(){
ArrayList arrayList = new ArrayList();
Iterator ie = arrayList.iterator();
try {
IteratorUtils.filteredIterator(ie,null);
} catch (NullPointerException npe){
//
}
try {
IteratorUtils.filteredIterator(null,null);
} catch (NullPointerException npe){
//
}
}
@Test
public void testTransformedIterator(){
ArrayList arrayList = new ArrayList();
Iterator ie = arrayList.iterator();
try {
IteratorUtils.transformedIterator(ie,null);
} catch (NullPointerException npe){
//
}
try {
IteratorUtils.transformedIterator(null,null);
} catch (NullPointerException npe){
//
}
}
@Test(expected=NullPointerException.class)
public void testAsIterator(){
final Vector<String> vector = new Vector<>();
vector.addElement("zero");
vector.addElement("one");
Enumeration<String> en = vector.elements();
assertTrue("create instance fail", IteratorUtils.asIterator(en) instanceof Iterator);
IteratorUtils.asIterator(null);
}
@Test
public void testAsIteratorNull(){
Collection coll = new ArrayList ();
coll.add("test");
final Vector<String> vector = new Vector<>();
vector.addElement("test");
vector.addElement("one");
Enumeration<String> en = vector.elements();
assertTrue("create instance fail", IteratorUtils.asIterator(en,coll) instanceof Iterator);
try {
IteratorUtils.asIterator(null,coll);
} catch (NullPointerException npe){
//
}
try {
IteratorUtils.asIterator(en,null);
} catch (NullPointerException npe){
//
}
}
@Test(expected=NullPointerException.class)
public void testLoopingIterator(){
ArrayList arrayList = new ArrayList();
arrayList.add("test");
Collection coll = new ArrayList ();
coll.add("test");
Iterator ie = arrayList.iterator();
assertTrue("create instance fail", IteratorUtils.loopingIterator(coll) instanceof ResettableIterator);
IteratorUtils.loopingIterator(null);
}
@Test(expected=NullPointerException.class)
public void testLoopingListIterator(){
ArrayList arrayList = new ArrayList();
arrayList.add("test");
Iterator ie = arrayList.iterator();
assertTrue("create instance fail",
IteratorUtils.loopingListIterator(arrayList) instanceof ResettableIterator);
IteratorUtils.loopingListIterator(null);
}
@Test(expected=NullPointerException.class)
public void testCollatedIteratorNull() {
ArrayList arrayList = new ArrayList();
// natural ordering
Iterator<Integer> it =
IteratorUtils.collatedIterator(null, collectionOdd.iterator(),collectionOdd.iterator(),collectionOdd.iterator());
List<Integer> result = IteratorUtils.toList(it);
assertEquals(18, result.size());
it = IteratorUtils.collatedIterator(null, collectionOdd.iterator());
result = IteratorUtils.toList(it);
assertEquals(collectionOdd, result);
final Comparator<Integer> reverseComparator =
ComparatorUtils.reversedComparator(ComparatorUtils.<Integer>naturalComparator());
Collections.reverse(collectionOdd);
it = IteratorUtils.collatedIterator(reverseComparator, collectionOdd.iterator());
result = IteratorUtils.toList(it);
assertEquals(collectionOdd, result);
IteratorUtils.collatedIterator(null, arrayList.iterator(),arrayList.listIterator(),null);
}
@Test(expected=NullPointerException.class)
public void testCollatedIteratorCollectionNull() {
Collection<Iterator<?>> coll = new ArrayList<>();
coll.add(collectionOdd.iterator());
// natural ordering
Iterator<?> it =
IteratorUtils.collatedIterator(null, coll);
List<?> result = IteratorUtils.toList(it);
assertEquals(6, result.size());
IteratorUtils.collatedIterator(null,(Collection<Iterator<?>>) null);
}
@Test
public void testFilteredListIterator(){
List arrayList = new ArrayList();
arrayList.add("test");
Predicate predicate = INSTANCE;
assertTrue("create instance fail",
IteratorUtils.filteredListIterator(arrayList.listIterator(),predicate) instanceof ListIterator);
try {
IteratorUtils.filteredListIterator(null, predicate);
} catch (NullPointerException npe){
//
}
try {
IteratorUtils.filteredListIterator(arrayList.listIterator(),null);
} catch (NullPointerException npe){
//
}
}
}