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dl |
1.1 |
/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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jsr166 |
1.7 |
* http://creativecommons.org/publicdomain/zero/1.0/ |
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jsr166 |
1.2 |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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dl |
1.1 |
*/ |
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jsr166 |
1.9 |
import java.util.AbstractQueue; |
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import java.util.Arrays; |
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import java.util.Iterator; |
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import java.util.NoSuchElementException; |
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dl |
1.1 |
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jsr166 |
1.10 |
import junit.framework.Test; |
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import junit.framework.TestSuite; |
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dl |
1.1 |
public class AbstractQueueTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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jsr166 |
1.13 |
main(suite(), args); |
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dl |
1.1 |
} |
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public static Test suite() { |
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return new TestSuite(AbstractQueueTest.class); |
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} |
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dl |
1.19 |
static class Succeed extends AbstractQueue<Item> { |
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public boolean offer(Item x) { |
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dl |
1.1 |
if (x == null) throw new NullPointerException(); |
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jsr166 |
1.2 |
return true; |
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dl |
1.1 |
} |
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dl |
1.19 |
public Item peek() { return one; } |
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public Item poll() { return one; } |
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dl |
1.1 |
public int size() { return 0; } |
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dl |
1.19 |
public Iterator<Item> iterator() { return null; } // not needed |
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dl |
1.1 |
} |
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dl |
1.19 |
static class Fail extends AbstractQueue<Item> { |
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public boolean offer(Item x) { |
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dl |
1.1 |
if (x == null) throw new NullPointerException(); |
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jsr166 |
1.2 |
return false; |
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dl |
1.1 |
} |
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dl |
1.19 |
public Item peek() { return null; } |
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public Item poll() { return null; } |
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dl |
1.1 |
public int size() { return 0; } |
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dl |
1.19 |
public Iterator<Item> iterator() { return null; } // not needed |
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dl |
1.1 |
} |
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/** |
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* add returns true if offer succeeds |
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*/ |
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public void testAddS() { |
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Succeed q = new Succeed(); |
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assertTrue(q.add(two)); |
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} |
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/** |
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jsr166 |
1.16 |
* add throws IllegalStateException if offer fails |
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dl |
1.1 |
*/ |
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public void testAddF() { |
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Fail q = new Fail(); |
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try { |
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q.add(one); |
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shouldThrow(); |
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jsr166 |
1.3 |
} catch (IllegalStateException success) {} |
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dl |
1.1 |
} |
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/** |
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jsr166 |
1.15 |
* add throws NullPointerException if offer does |
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dl |
1.1 |
*/ |
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public void testAddNPE() { |
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Succeed q = new Succeed(); |
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try { |
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q.add(null); |
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shouldThrow(); |
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jsr166 |
1.3 |
} catch (NullPointerException success) {} |
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dl |
1.1 |
} |
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/** |
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* remove returns normally if poll succeeds |
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*/ |
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public void testRemoveS() { |
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Succeed q = new Succeed(); |
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jsr166 |
1.17 |
assertSame(one, q.remove()); |
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dl |
1.1 |
} |
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/** |
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* remove throws NSEE if poll returns null |
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*/ |
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public void testRemoveF() { |
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Fail q = new Fail(); |
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try { |
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q.remove(); |
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shouldThrow(); |
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jsr166 |
1.3 |
} catch (NoSuchElementException success) {} |
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dl |
1.1 |
} |
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/** |
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* element returns normally if peek succeeds |
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*/ |
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public void testElementS() { |
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Succeed q = new Succeed(); |
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jsr166 |
1.18 |
assertSame(one, q.element()); |
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dl |
1.1 |
} |
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/** |
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* element throws NSEE if peek returns null |
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*/ |
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public void testElementF() { |
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Fail q = new Fail(); |
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try { |
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q.element(); |
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shouldThrow(); |
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jsr166 |
1.3 |
} catch (NoSuchElementException success) {} |
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dl |
1.1 |
} |
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/** |
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jsr166 |
1.15 |
* addAll(null) throws NullPointerException |
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dl |
1.1 |
*/ |
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public void testAddAll1() { |
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jsr166 |
1.11 |
Succeed q = new Succeed(); |
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dl |
1.1 |
try { |
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q.addAll(null); |
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shouldThrow(); |
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jsr166 |
1.3 |
} catch (NullPointerException success) {} |
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dl |
1.1 |
} |
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/** |
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jsr166 |
1.15 |
* addAll(this) throws IllegalArgumentException |
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dl |
1.1 |
*/ |
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public void testAddAllSelf() { |
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jsr166 |
1.11 |
Succeed q = new Succeed(); |
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dl |
1.1 |
try { |
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q.addAll(q); |
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shouldThrow(); |
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jsr166 |
1.3 |
} catch (IllegalArgumentException success) {} |
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dl |
1.1 |
} |
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/** |
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jsr166 |
1.15 |
* addAll of a collection with null elements throws NullPointerException |
139 |
dl |
1.1 |
*/ |
140 |
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public void testAddAll2() { |
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jsr166 |
1.11 |
Succeed q = new Succeed(); |
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dl |
1.19 |
Item[] items = new Item[SIZE]; |
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dl |
1.1 |
try { |
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dl |
1.19 |
q.addAll(Arrays.asList(items)); |
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dl |
1.1 |
shouldThrow(); |
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jsr166 |
1.3 |
} catch (NullPointerException success) {} |
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dl |
1.1 |
} |
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jsr166 |
1.5 |
|
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dl |
1.1 |
/** |
150 |
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* addAll of a collection with any null elements throws NPE after |
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* possibly adding some elements |
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*/ |
153 |
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public void testAddAll3() { |
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jsr166 |
1.11 |
Succeed q = new Succeed(); |
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dl |
1.19 |
Item[] items = new Item[SIZE]; |
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jsr166 |
1.14 |
for (int i = 0; i < SIZE - 1; ++i) |
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dl |
1.19 |
items[i] = itemFor(i); |
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dl |
1.1 |
try { |
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dl |
1.19 |
q.addAll(Arrays.asList(items)); |
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dl |
1.1 |
shouldThrow(); |
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jsr166 |
1.3 |
} catch (NullPointerException success) {} |
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dl |
1.1 |
} |
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jsr166 |
1.5 |
|
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dl |
1.1 |
/** |
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jsr166 |
1.15 |
* addAll throws IllegalStateException if an add fails |
166 |
dl |
1.1 |
*/ |
167 |
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public void testAddAll4() { |
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jsr166 |
1.12 |
Fail q = new Fail(); |
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dl |
1.19 |
Item[] items = seqItems(SIZE); |
170 |
dl |
1.1 |
try { |
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dl |
1.19 |
q.addAll(Arrays.asList(items)); |
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dl |
1.1 |
shouldThrow(); |
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jsr166 |
1.3 |
} catch (IllegalStateException success) {} |
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dl |
1.1 |
} |
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} |