/**
* Tests the {@link EMFCompareMap}'s key set. The set is expected to support the clear() operation
* and it effectively empties the map.
*/
public void testClear() {
testedMethod = "Clear()";
final Set keySet = testedMap.keySet();
try {
keySet.clear();
} catch (UnsupportedOperationException e) {
fail(testedMethod + ' ' + MESSAGE_UNSUPPORTED);
}
assertEquals("Clear() operation didn't effectively empty the map.", 0, testedMap.size());
}
/**
* Tests the {@link EMFCompareMap}'s key set. The set's iterator is expected to throw a {@link
* ConcurrentModificationException} if its original map is structurally modified via the clear()
* method.
*/
public void testConcurrentClear() {
testedMethod = "Clear()";
final Iterator keyIterator = testedMap.keySet().iterator();
testedMap.clear();
try {
keyIterator.next();
fail(MESSAGE_CONCURRENT + ' ' + testedMethod + '.');
} catch (ConcurrentModificationException e) {
// We expected this
} catch (NoSuchElementException e) {
fail(MESSAGE_CONCURRENT + ' ' + testedMethod + '.');
}
}
/**
* Tests the {@link EMFCompareMap}'s key set. The set's iterator is expected to throw a {@link
* ConcurrentModificationException} if its original map is structurally modified via the
* remove(Object) method.
*/
public void testConcurrentRemove() {
testedMethod = "Remove(Object)";
final Iterator keyIterator = testedMap.keySet().iterator();
// Removes a random entry from the set
testedMap.remove(KEY_SET[10]);
try {
keyIterator.next();
fail(MESSAGE_CONCURRENT + ' ' + testedMethod + '.');
} catch (ConcurrentModificationException e) {
// We expected this
} catch (NoSuchElementException e) {
fail(MESSAGE_CONCURRENT + ' ' + testedMethod + '.');
}
}
/**
* Tests the {@link EMFCompareMap}'s key set. The set's iterator is expected to throw a {@link
* ConcurrentModificationException} if its original map is structurally modified via the
* putAll(Collection) method.
*/
public void testConcurrentPutAll() {
testedMethod = "PutAll(Collection)";
final EMFCompareMap anotherMap = new EMFCompareMap();
final Iterator keyIterator = anotherMap.keySet().iterator();
anotherMap.putAll(testedMap);
try {
keyIterator.next();
fail(MESSAGE_CONCURRENT + ' ' + testedMethod + '.');
} catch (ConcurrentModificationException e) {
// We expected this
} catch (NoSuchElementException e) {
fail(MESSAGE_CONCURRENT + ' ' + testedMethod + '.');
}
}
/**
* Tests the {@link EMFCompareMap}'s key set. The set's iterator is expected to throw a {@link
* ConcurrentModificationException} if its original map is structurally modified via the
* put(Object) method.
*/
public void testConcurrentPut() {
testedMethod = "Put(Object)";
final Iterator keyIterator = testedMap.keySet().iterator();
// This entry cannot exist (random value as a key, random key as a value)
testedMap.put(VALUE_SET[5], KEY_SET[10]);
try {
keyIterator.next();
fail(MESSAGE_CONCURRENT + ' ' + testedMethod + '.');
} catch (ConcurrentModificationException e) {
// We expected this
} catch (NoSuchElementException e) {
fail(MESSAGE_CONCURRENT + ' ' + testedMethod + '.');
}
}
/**
* Tests the creation of the {@link EMFCompareMap}'s key set.
*
* <p>
*
* <ul>
* Assertions :
* <li>Created set isn't <code>null</code>
* <li>Created set's size is the same as its original map's.
* <li>The set's entries correspond to the original map's keys.
* </ul>
*/
public void testSetCreation() {
final Set keySet = testedMap.keySet();
assertNotNull("Key set hasn't been created.", keySet);
assertEquals(
"Created set hasn't got the same size as its original map.",
testedMap.size(),
keySet.size());
for (final Iterator keyIterator = keySet.iterator(); keyIterator.hasNext(); ) {
final Object currentKey = keyIterator.next();
assertTrue(
"The set's iterator contains mappings different than its original map's keys.",
testedMap.containsKey(currentKey));
}
}
/**
* Tests the {@link EMFCompareMap}'s key set. The set is expected not to support the add()
* operation.
*/
public void testNoAddThroughSet() {
final Set keySet = testedMap.keySet();
try {
keySet.add(VALUE_SET[10]);
fail("UnsupportedOperationException should have been thrown.");
} catch (UnsupportedOperationException e) {
// We expected this
}
}
/**
* Tests the {@link EMFCompareMap}'s key set's iterator. The iterator is expected to support the
* remove(Object) operation and this method is expected to effectively remove the given object
* from the map. Size of the map afterward should have decreased by 1.
*/
public void testRemoveViaIterator() {
testedMethod = "Iterator's remove(Object)";
int currentMapSize = testedMap.size();
for (final Iterator keyIterator = testedMap.keySet().iterator(); keyIterator.hasNext(); ) {
final Object currentKey = keyIterator.next();
try {
keyIterator.remove();
} catch (UnsupportedOperationException e) {
fail(testedMethod + ' ' + MESSAGE_UNSUPPORTED);
}
assertFalse(
"Operation remove() of the key set's iterator did not remove the element from the map.",
testedMap.containsKey(currentKey));
assertEquals(
"Unexpected size of the map after removal of an element.",
--currentMapSize,
testedMap.size());
}
}
/**
* Tests the {@link EMFCompareMap}'s key set. The set is expected to support the remove(Object)
* operation and this method is expected to effectively remove the given object from the map. Size
* of the map afterward should have decreased by 1.
*/
public void testRemoveViaSet() {
testedMethod = "Set's remove(Object)";
final Set keySet = testedMap.keySet();
// Create an array of the entries to avoid concurrent modification exception
final Object[] array = keySet.toArray();
int currentMapSize = testedMap.size();
for (Object key : array) {
try {
keySet.remove(key);
} catch (UnsupportedOperationException e) {
fail(testedMethod + ' ' + MESSAGE_UNSUPPORTED);
}
assertFalse(
"Operation remove() of the key set did not remove the element from the map.",
testedMap.containsKey(key));
assertEquals(
"Map size didn't decrease by one after removal of one element.",
--currentMapSize,
testedMap.size());
}
}
/**
* Tests the {@link EMFCompareMap}'s key set. The set is expected to support the
* retainAll(Collection) operation and it effectively removes all the map's element not contained
* within the given collection.
*/
public void testRetainAll() {
testedMethod = "RetainAll(Collection)";
Set keySet = testedMap.keySet();
final Set retainedElements = new HashSet();
try {
keySet.retainAll(retainedElements);
} catch (UnsupportedOperationException e) {
fail(testedMethod + ' ' + MESSAGE_UNSUPPORTED);
}
assertEquals("Map should have been emptied by its keySet retainAll().", 0, testedMap.size());
for (int i = 0; i < KEY_SET.length; i++) {
// Adds more and more values to the map for each loop
for (int j = 0; j < i; j++) {
testedMap.put(KEY_SET[j], VALUE_SET[j]);
}
keySet = testedMap.keySet();
// Create an array of the entries to avoid concurrent modification exception
final Object[] array = keySet.toArray();
int currentMapSize = testedMap.size();
for (int j = 0; j < array.length; j++) {
for (int k = 0; k < array.length - j; k++) {
retainedElements.add(array[k]);
}
try {
keySet.retainAll(retainedElements);
} catch (UnsupportedOperationException e) {
fail(testedMethod + ' ' + MESSAGE_UNSUPPORTED);
}
for (int k = 0; k < array.length - j; k++) {
assertTrue(
"Operation retainAll(Collection) did not retain necessary elements within the map.",
testedMap.containsKey(array[k]));
}
assertEquals(
"Unexpected size of the map after retainAll() execution.",
currentMapSize--,
array.length - j);
}
}
}
/**
* {@inheritDoc}
*
* @see junit.framework.TestCase#tearDown()
*/
@Override
protected void tearDown() {
testedMap.clear();
}
/**
* {@inheritDoc}
*
* @see junit.framework.TestCase#setUp()
*/
@Override
protected void setUp() {
for (int i = 0; i < KEY_SET.length; i++) {
testedMap.put(KEY_SET[i], VALUE_SET[i]);
}
}