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/*
* Written by Doug Lea with assistance from members of JCP JSR-166
* Expert Group and released to the public domain, as explained at
* http://creativecommons.org/publicdomain/zero/1.0/
* Other contributors include Andrew Wright, Jeffrey Hayes,
* Pat Fisher, Mike Judd.
*/
package jsr166;
import java.util.AbstractQueue;
import java.util.Arrays;
import java.util.Iterator;
import java.util.NoSuchElementException;
import junit.framework.Test;
import junit.framework.TestSuite;
public class AbstractQueueTest extends JSR166TestCase {
// android-note: Removed because the CTS runner does a bad job of
// retrying tests that have suite() declarations.
//
// public static void main(String[] args) {
// main(suite(), args);
// }
// public static Test suite() {
// return new TestSuite(...);
// }
static class Succeed extends AbstractQueue<Integer> {
public boolean offer(Integer x) {
if (x == null) throw new NullPointerException();
return true;
}
public Integer peek() { return one; }
public Integer poll() { return one; }
public int size() { return 0; }
public Iterator iterator() { return null; } // not needed
}
static class Fail extends AbstractQueue<Integer> {
public boolean offer(Integer x) {
if (x == null) throw new NullPointerException();
return false;
}
public Integer peek() { return null; }
public Integer poll() { return null; }
public int size() { return 0; }
public Iterator iterator() { return null; } // not needed
}
/**
* add returns true if offer succeeds
*/
public void testAddS() {
Succeed q = new Succeed();
assertTrue(q.add(two));
}
/**
* add throws ISE true if offer fails
*/
public void testAddF() {
Fail q = new Fail();
try {
q.add(one);
shouldThrow();
} catch (IllegalStateException success) {}
}
/**
* add throws NPE if offer does
*/
public void testAddNPE() {
Succeed q = new Succeed();
try {
q.add(null);
shouldThrow();
} catch (NullPointerException success) {}
}
/**
* remove returns normally if poll succeeds
*/
public void testRemoveS() {
Succeed q = new Succeed();
q.remove();
}
/**
* remove throws NSEE if poll returns null
*/
public void testRemoveF() {
Fail q = new Fail();
try {
q.remove();
shouldThrow();
} catch (NoSuchElementException success) {}
}
/**
* element returns normally if peek succeeds
*/
public void testElementS() {
Succeed q = new Succeed();
q.element();
}
/**
* element throws NSEE if peek returns null
*/
public void testElementF() {
Fail q = new Fail();
try {
q.element();
shouldThrow();
} catch (NoSuchElementException success) {}
}
/**
* addAll(null) throws NPE
*/
public void testAddAll1() {
Succeed q = new Succeed();
try {
q.addAll(null);
shouldThrow();
} catch (NullPointerException success) {}
}
/**
* addAll(this) throws IAE
*/
public void testAddAllSelf() {
Succeed q = new Succeed();
try {
q.addAll(q);
shouldThrow();
} catch (IllegalArgumentException success) {}
}
/**
* addAll of a collection with null elements throws NPE
*/
public void testAddAll2() {
Succeed q = new Succeed();
Integer[] ints = new Integer[SIZE];
try {
q.addAll(Arrays.asList(ints));
shouldThrow();
} catch (NullPointerException success) {}
}
/**
* addAll of a collection with any null elements throws NPE after
* possibly adding some elements
*/
public void testAddAll3() {
Succeed q = new Succeed();
Integer[] ints = new Integer[SIZE];
for (int i = 0; i < SIZE-1; ++i)
ints[i] = new Integer(i);
try {
q.addAll(Arrays.asList(ints));
shouldThrow();
} catch (NullPointerException success) {}
}
/**
* addAll throws ISE if an add fails
*/
public void testAddAll4() {
Fail q = new Fail();
Integer[] ints = new Integer[SIZE];
for (int i = 0; i < SIZE; ++i)
ints[i] = new Integer(i);
try {
q.addAll(Arrays.asList(ints));
shouldThrow();
} catch (IllegalStateException success) {}
}
}
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