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Add more tests for queue interface. 

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/collections/trunk@1540719 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Thomas Neidhart 2013-11-11 13:52:13 +00:00
parent 49452d6505
commit 15ee56bd0f
1 changed files with 177 additions and 3 deletions
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180
src/test/java/org/apache/commons/collections4/queue/AbstractQueueTest.java
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@ -22,6 +22,7 @@ import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.Queue;
import org.apache.commons.collections4.collection.AbstractCollectionTest;
@ -37,8 +38,6 @@ import org.apache.commons.collections4.collection.AbstractCollectionTest;
* test case (method) your {@link Queue} fails or override one of the
* protected methods from AbstractCollectionTest.
*
* TODO: add more tests for Queue interface
*
* @since 4.0
* @version $Id$
*/
@ -133,6 +132,181 @@ public abstract class AbstractQueueTest<E> extends AbstractCollectionTest<E> {
return (Queue<E>) super.getCollection();
}
//-----------------------------------------------------------------------
/**
* Tests {@link Queue#offer(Object)}.
*/
public void testQueueOffer() {
if (!isAddSupported()) {
return;
}
final E[] elements = getFullElements();
for (final E element : elements) {
resetEmpty();
final boolean r = getCollection().offer(element);
getConfirmed().add(element);
verify();
assertTrue("Empty queue changed after add", r);
assertEquals("Queue size is 1 after first add", 1, getCollection().size());
}
resetEmpty();
int size = 0;
for (final E element : elements) {
final boolean r = getCollection().offer(element);
getConfirmed().add(element);
verify();
if (r) {
size++;
}
assertEquals("Queue size should grow after add", size, getCollection().size());
assertTrue("Queue should contain added element", getCollection().contains(element));
}
}
/**
* Tests {@link Queue#element()}.
*/
public void testQueueElement() {
resetEmpty();
try {
getCollection().element();
fail("Queue.element should throw NoSuchElementException");
} catch (final NoSuchElementException e) {
// expected
}
resetFull();
assertTrue(getConfirmed().contains(getCollection().element()));
if (!isRemoveSupported()) {
return;
}
final int max = getFullElements().length;
for (int i = 0; i < max; i++) {
final E element = getCollection().element();
if (!isNullSupported()) {
assertNotNull(element);
}
assertTrue(getConfirmed().contains(element));
getCollection().remove(element);
getConfirmed().remove(element);
verify();
}
try {
getCollection().element();
fail("Queue.element should throw NoSuchElementException");
} catch (final NoSuchElementException e) {
// expected
}
}
/**
* Tests {@link Queue#peek()}.
*/
public void testQueuePeek() {
if (!isRemoveSupported()) {
return;
}
resetEmpty();
E element = getCollection().peek();
assertNull(element);
resetFull();
final int max = getFullElements().length;
for (int i = 0; i < max; i++) {
element = getCollection().peek();
if (!isNullSupported()) {
assertNotNull(element);
}
assertTrue(getConfirmed().contains(element));
getCollection().remove(element);
getConfirmed().remove(element);
verify();
}
element = getCollection().peek();
assertNull(element);
}
/**
* Tests {@link Queue#remove()}.
*/
public void testQueueRemove() {
if (!isRemoveSupported()) {
return;
}
resetEmpty();
try {
getCollection().remove();
fail("Queue.remove should throw NoSuchElementException");
} catch (final NoSuchElementException e) {
// expected
}
resetFull();
final int max = getFullElements().length;
for (int i = 0; i < max; i++) {
final E element = getCollection().remove();
final boolean success = getConfirmed().remove(element);
assertTrue("remove should return correct element", success);
verify();
}
try {
getCollection().element();
fail("Queue.remove should throw NoSuchElementException");
} catch (final NoSuchElementException e) {
// expected
}
}
/**
* Tests {@link Queue#poll()}.
*/
public void testQueuePoll() {
if (!isRemoveSupported()) {
return;
}
resetEmpty();
E element = getCollection().poll();
assertNull(element);
resetFull();
final int max = getFullElements().length;
for (int i = 0; i < max; i++) {
element = getCollection().poll();
final boolean success = getConfirmed().remove(element);
assertTrue("poll should return correct element", success);
verify();
}
element = getCollection().poll();
assertNull(element);
}
//-----------------------------------------------------------------------
@SuppressWarnings("unchecked")
public void testEmptyQueueSerialization() throws IOException, ClassNotFoundException {
@ -204,7 +378,7 @@ public abstract class AbstractQueueTest<E> extends AbstractCollectionTest<E> {
final Queue<E> queue = makeFullCollection();
if(queue instanceof Serializable && !skipSerializedCanonicalTests() && isTestSerialization()) {
final Queue<E> queue2 = (Queue<E>) readExternalFormFromDisk(getCanonicalFullCollectionName(queue));
assertEquals("Queues is the right size",queue.size(), queue2.size());
assertEquals("Queues are not the right size", queue.size(), queue2.size());
}
}