From 8f0d92bba199d906c70a5e40d7f3516c1a424117 Mon Sep 17 00:00:00 2001 From: Calin Juravle Date: Thu, 1 Aug 2013 17:26:00 +0100 Subject: Added jsr166 tck tests as part of the libcore testsuite. Change-Id: I6094d734f818fa043f2b277cf2b4ec7fec68e26e --- .../test/java/jsr166/CopyOnWriteArraySetTest.java | 359 +++++++++++++++++++++ 1 file changed, 359 insertions(+) create mode 100644 jsr166-tests/src/test/java/jsr166/CopyOnWriteArraySetTest.java (limited to 'jsr166-tests/src/test/java/jsr166/CopyOnWriteArraySetTest.java') diff --git a/jsr166-tests/src/test/java/jsr166/CopyOnWriteArraySetTest.java b/jsr166-tests/src/test/java/jsr166/CopyOnWriteArraySetTest.java new file mode 100644 index 0000000000..feb283fd9b --- /dev/null +++ b/jsr166-tests/src/test/java/jsr166/CopyOnWriteArraySetTest.java @@ -0,0 +1,359 @@ +/* + * 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 junit.framework.*; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collection; +import java.util.Collections; +import java.util.Iterator; +import java.util.NoSuchElementException; +import java.util.Set; +import java.util.Vector; +import java.util.concurrent.CopyOnWriteArraySet; + +public class CopyOnWriteArraySetTest extends JSR166TestCase { + + static CopyOnWriteArraySet populatedSet(int n) { + CopyOnWriteArraySet a = new CopyOnWriteArraySet(); + assertTrue(a.isEmpty()); + for (int i = 0; i < n; i++) + a.add(i); + assertFalse(a.isEmpty()); + assertEquals(n, a.size()); + return a; + } + + static CopyOnWriteArraySet populatedSet(Integer[] elements) { + CopyOnWriteArraySet a = new CopyOnWriteArraySet(); + assertTrue(a.isEmpty()); + for (int i = 0; i < elements.length; i++) + a.add(elements[i]); + assertFalse(a.isEmpty()); + assertEquals(elements.length, a.size()); + return a; + } + + /** + * Default-constructed set is empty + */ + public void testConstructor() { + CopyOnWriteArraySet a = new CopyOnWriteArraySet(); + assertTrue(a.isEmpty()); + } + + /** + * Collection-constructed set holds all of its elements + */ + public void testConstructor3() { + Integer[] ints = new Integer[SIZE]; + for (int i = 0; i < SIZE-1; ++i) + ints[i] = new Integer(i); + CopyOnWriteArraySet a = new CopyOnWriteArraySet(Arrays.asList(ints)); + for (int i = 0; i < SIZE; ++i) + assertTrue(a.contains(ints[i])); + } + + /** + * addAll adds each element from the given collection + */ + public void testAddAll() { + CopyOnWriteArraySet full = populatedSet(3); + Vector v = new Vector(); + v.add(three); + v.add(four); + v.add(five); + full.addAll(v); + assertEquals(6, full.size()); + } + + /** + * addAll adds each element from the given collection that did not + * already exist in the set + */ + public void testAddAll2() { + CopyOnWriteArraySet full = populatedSet(3); + Vector v = new Vector(); + v.add(three); + v.add(four); + v.add(one); // will not add this element + full.addAll(v); + assertEquals(5, full.size()); + } + + /** + * add will not add the element if it already exists in the set + */ + public void testAdd2() { + CopyOnWriteArraySet full = populatedSet(3); + full.add(one); + assertEquals(3, full.size()); + } + + /** + * add adds the element when it does not exist in the set + */ + public void testAdd3() { + CopyOnWriteArraySet full = populatedSet(3); + full.add(three); + assertTrue(full.contains(three)); + } + + /** + * clear removes all elements from the set + */ + public void testClear() { + CopyOnWriteArraySet full = populatedSet(3); + full.clear(); + assertEquals(0, full.size()); + } + + /** + * contains returns true for added elements + */ + public void testContains() { + CopyOnWriteArraySet full = populatedSet(3); + assertTrue(full.contains(one)); + assertFalse(full.contains(five)); + } + + /** + * Sets with equal elements are equal + */ + public void testEquals() { + CopyOnWriteArraySet a = populatedSet(3); + CopyOnWriteArraySet b = populatedSet(3); + assertTrue(a.equals(b)); + assertTrue(b.equals(a)); + assertEquals(a.hashCode(), b.hashCode()); + a.add(m1); + assertFalse(a.equals(b)); + assertFalse(b.equals(a)); + b.add(m1); + assertTrue(a.equals(b)); + assertTrue(b.equals(a)); + assertEquals(a.hashCode(), b.hashCode()); + } + + /** + * containsAll returns true for collections with subset of elements + */ + public void testContainsAll() { + CopyOnWriteArraySet full = populatedSet(3); + Vector v = new Vector(); + v.add(one); + v.add(two); + assertTrue(full.containsAll(v)); + v.add(six); + assertFalse(full.containsAll(v)); + } + + /** + * isEmpty is true when empty, else false + */ + public void testIsEmpty() { + CopyOnWriteArraySet empty = new CopyOnWriteArraySet(); + CopyOnWriteArraySet full = populatedSet(3); + assertTrue(empty.isEmpty()); + assertFalse(full.isEmpty()); + } + + /** + * iterator() returns an iterator containing the elements of the + * set in insertion order + */ + public void testIterator() { + Collection empty = new CopyOnWriteArraySet(); + assertFalse(empty.iterator().hasNext()); + try { + empty.iterator().next(); + shouldThrow(); + } catch (NoSuchElementException success) {} + + Integer[] elements = new Integer[SIZE]; + for (int i = 0; i < SIZE; i++) + elements[i] = i; + Collections.shuffle(Arrays.asList(elements)); + Collection full = populatedSet(elements); + + Iterator it = full.iterator(); + for (int j = 0; j < SIZE; j++) { + assertTrue(it.hasNext()); + assertEquals(elements[j], it.next()); + } + assertFalse(it.hasNext()); + try { + it.next(); + shouldThrow(); + } catch (NoSuchElementException success) {} + } + + /** + * iterator remove is unsupported + */ + public void testIteratorRemove() { + CopyOnWriteArraySet full = populatedSet(3); + Iterator it = full.iterator(); + it.next(); + try { + it.remove(); + shouldThrow(); + } catch (UnsupportedOperationException success) {} + } + + /** + * toString holds toString of elements + */ + public void testToString() { + assertEquals("[]", new CopyOnWriteArraySet().toString()); + CopyOnWriteArraySet full = populatedSet(3); + String s = full.toString(); + for (int i = 0; i < 3; ++i) + assertTrue(s.contains(String.valueOf(i))); + assertEquals(new ArrayList(full).toString(), + full.toString()); + } + + /** + * removeAll removes all elements from the given collection + */ + public void testRemoveAll() { + CopyOnWriteArraySet full = populatedSet(3); + Vector v = new Vector(); + v.add(one); + v.add(two); + full.removeAll(v); + assertEquals(1, full.size()); + } + + /** + * remove removes an element + */ + public void testRemove() { + CopyOnWriteArraySet full = populatedSet(3); + full.remove(one); + assertFalse(full.contains(one)); + assertEquals(2, full.size()); + } + + /** + * size returns the number of elements + */ + public void testSize() { + CopyOnWriteArraySet empty = new CopyOnWriteArraySet(); + CopyOnWriteArraySet full = populatedSet(3); + assertEquals(3, full.size()); + assertEquals(0, empty.size()); + } + + /** + * toArray() returns an Object array containing all elements from + * the set in insertion order + */ + public void testToArray() { + Object[] a = new CopyOnWriteArraySet().toArray(); + assertTrue(Arrays.equals(new Object[0], a)); + assertSame(Object[].class, a.getClass()); + + Integer[] elements = new Integer[SIZE]; + for (int i = 0; i < SIZE; i++) + elements[i] = i; + Collections.shuffle(Arrays.asList(elements)); + Collection full = populatedSet(elements); + + assertTrue(Arrays.equals(elements, full.toArray())); + assertSame(Object[].class, full.toArray().getClass()); + } + + /** + * toArray(Integer array) returns an Integer array containing all + * elements from the set in insertion order + */ + public void testToArray2() { + Collection empty = new CopyOnWriteArraySet(); + Integer[] a; + + a = new Integer[0]; + assertSame(a, empty.toArray(a)); + + a = new Integer[SIZE/2]; + Arrays.fill(a, 42); + assertSame(a, empty.toArray(a)); + assertNull(a[0]); + for (int i = 1; i < a.length; i++) + assertEquals(42, (int) a[i]); + + Integer[] elements = new Integer[SIZE]; + for (int i = 0; i < SIZE; i++) + elements[i] = i; + Collections.shuffle(Arrays.asList(elements)); + Collection full = populatedSet(elements); + + Arrays.fill(a, 42); + assertTrue(Arrays.equals(elements, full.toArray(a))); + for (int i = 0; i < a.length; i++) + assertEquals(42, (int) a[i]); + assertSame(Integer[].class, full.toArray(a).getClass()); + + a = new Integer[SIZE]; + Arrays.fill(a, 42); + assertSame(a, full.toArray(a)); + assertTrue(Arrays.equals(elements, a)); + + a = new Integer[2*SIZE]; + Arrays.fill(a, 42); + assertSame(a, full.toArray(a)); + assertTrue(Arrays.equals(elements, Arrays.copyOf(a, SIZE))); + assertNull(a[SIZE]); + for (int i = SIZE + 1; i < a.length; i++) + assertEquals(42, (int) a[i]); + } + + /** + * toArray throws an ArrayStoreException when the given array can + * not store the objects inside the set + */ + public void testToArray_ArrayStoreException() { + try { + CopyOnWriteArraySet c = new CopyOnWriteArraySet(); + c.add("zfasdfsdf"); + c.add("asdadasd"); + c.toArray(new Long[5]); + shouldThrow(); + } catch (ArrayStoreException success) {} + } + + /** + * A deserialized serialized set is equal + */ + public void testSerialization() throws Exception { + Set x = populatedSet(SIZE); + Set y = serialClone(x); + + assertNotSame(y, x); + assertEquals(x.size(), y.size()); + assertEquals(x.toString(), y.toString()); + assertTrue(Arrays.equals(x.toArray(), y.toArray())); + assertEquals(x, y); + assertEquals(y, x); + } + + /** + * addAll is idempotent + */ + public void testAddAll_idempotent() throws Exception { + Set x = populatedSet(SIZE); + Set y = new CopyOnWriteArraySet(x); + y.addAll(x); + assertEquals(x, y); + assertEquals(y, x); + } + +} -- cgit v1.2.3