Java tutorial
/** * (c) 2009-2014 Peter Wullinger * * $Id$ * * Use, modification and restribution of this file are covered by the * terms of the Artistic License 2.0. * * You should have received a copy of the license terms in a file named * "LICENSE" together with this software package. * * Disclaimer of Warranty: THE PACKAGE IS PROVIDED BY THE COPYRIGHT * HOLDER AND CONTRIBUTORS "AS IS' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES. THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR * A PARTICULAR PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED TO THE * EXTENT PERMITTED BY YOUR LOCAL LAW. UNLESS REQUIRED BY LAW, NO * COPYRIGHT HOLDER OR CONTRIBUTOR WILL BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING IN ANY WAY OUT * OF THE USE OF THE PACKAGE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. **/ package de.dhke.projects.cutil.collections.aspect; import java.util.Arrays; import java.util.Collection; import java.util.Iterator; import java.util.Map; import java.util.TreeMap; import org.apache.commons.collections15.keyvalue.DefaultMapEntry; import org.junit.After; import org.junit.AfterClass; import static org.junit.Assert.*; import org.junit.Before; import org.junit.BeforeClass; import org.junit.Test; /** * * @author Peter Wullinger <java@dhke.de> */ public class AspectMapValueCollectionTest { private Map<String, String> _baseMap; private AspectMap<String, String, Map<String, String>> _aspectMap; private AspectCollectionHistoryListener<Map.Entry<String, String>, Map<String, String>> _listener; private Collection<String> _values; public AspectMapValueCollectionTest() { } @BeforeClass public static void setUpClass() throws Exception { } @AfterClass public static void tearDownClass() throws Exception { } @Before public void setUp() { _baseMap = new TreeMap<>(); _baseMap.put("A", "1"); _baseMap.put("B", "2"); _baseMap.put("C", "3"); _baseMap.put("D", "4"); _aspectMap = AspectMap.decorate(_baseMap, this); _listener = new AspectCollectionHistoryListener<>(); _aspectMap.getListeners().add(_listener); _values = _aspectMap.values(); } @After public void tearDown() { _values = null; _listener = null; _aspectMap = null; _baseMap = null; } /** * Test of size method, of class AspectMapValueCollection. */ @Test public void testSize() { assertEquals(4, _values.size()); _baseMap.remove("A"); assertEquals(3, _values.size()); } /** * Test of isEmpty method, of class AspectMapValueCollection. */ @Test public void testIsEmpty() { assertFalse(_values.isEmpty()); _baseMap.clear(); assertTrue(_values.isEmpty()); } /** * Test of contains method, of class AspectMapValueCollection. */ @Test public void testContains() { assertTrue(_values.contains("1")); assertTrue(_values.contains("2")); assertTrue(_values.contains("3")); assertTrue(_values.contains("4")); assertFalse(_values.contains("5")); } /** * Test of iterator method, of class AspectMapValueCollection. */ @Test public void testIterator() { TestHelper.assertSequenceEquals(Arrays.asList("1", "2", "3", "4"), _values); } /** * Test of iterator method, of class AspectMapValueCollection. */ @Test public void testIterator_remove() { _baseMap.put("_", "1"); Iterator<String> iter = _values.iterator(); /* this empty while loop is intentional */ while (!iter.next().equals("1")) ; iter.remove(); /* the other value stays. It is not really possible to identify, which one */ assertTrue(_values.contains("1")); } /** * Test of iterator method, of class AspectMapValueCollection. */ @Test public void testIterator_remove_veto() { _listener.vetoRemove = true; Iterator<String> iter = _values.iterator(); /* this empty while loop is intentional */ while (!iter.next().equals("1")) ; try { iter.remove(); fail("Remove veto not raised"); } catch (AssertionError ex) { /* ignore */ } assertTrue(_values.contains("1")); } /** * Test of toArray method, of class AspectMapValueCollection. */ @Test public void testToArray_0args() { assertArrayEquals(new Object[] { "1", "2", "3", "4" }, _values.toArray()); } /** * Test of toArray method, of class AspectMapValueCollection. */ @Test public void testToArray_GenericType() { assertArrayEquals(new String[] { "1", "2", "3", "4" }, _values.toArray(new String[_values.size()])); } /** * Test of add method, of class AspectMapValueCollection. */ @Test(expected = UnsupportedOperationException.class) public void testAdd() { _values.add("5"); } /** * Test of remove method, of class AspectMapValueCollection. */ @Test public void testRemove() { assertFalse(_values.remove("5")); assertTrue(_listener.beforeRemoveEvents.isEmpty()); assertTrue(_listener.afterRemoveEvents.isEmpty()); _aspectMap.put("_", "1"); assertTrue(_values.remove("1")); assertFalse(_aspectMap.containsKey("A")); assertEquals("1", _aspectMap.get("_")); assertEquals(1, _listener.beforeRemoveEvents.size()); assertEquals(new DefaultMapEntry<>("A", "1"), _listener.beforeRemoveEvents.get(0).getItem()); assertEquals(1, _listener.afterRemoveEvents.size()); assertEquals(new DefaultMapEntry<>("A", "1"), _listener.afterRemoveEvents.get(0).getItem()); } /** * Test of remove method, of class AspectMapValueCollection. */ @Test public void testRemove_veto() { _listener.vetoRemove = true; assertFalse(_values.remove("5")); try { _values.remove("1"); fail("Remove veto not raised"); } catch (AssertionError ex) { /* ignore */ } assertTrue(_aspectMap.containsKey("A")); } /** * Test of containsAll method, of class AspectMapValueCollection. */ @Test public void testContainsAll() { assertTrue(_values.containsAll(Arrays.asList("1", "2", "3"))); assertTrue(_values.containsAll(Arrays.asList("1", "2", "3", "4"))); assertFalse(_values.containsAll(Arrays.asList("1", "2", "3", "4", "5"))); assertFalse(_values.containsAll(Arrays.asList("5", "6"))); } /** * Test of addAll method, of class AspectMapValueCollection. */ @Test(expected = UnsupportedOperationException.class) public void testAddAll() { _values.addAll(Arrays.asList("@", "_")); } /** * Test of removeAll method, of class AspectMapValueCollection. */ @Test public void testRemoveAll() { assertFalse(_values.removeAll(Arrays.asList("5", "6"))); assertTrue(_listener.beforeRemoveEvents.isEmpty()); assertTrue(_listener.afterRemoveEvents.isEmpty()); _baseMap.put("_", "1"); /* removeAll() drops ALL keys with matching values */ assertTrue(_values.removeAll(Arrays.asList("1", "2"))); assertFalse(_values.contains("1")); assertFalse(_values.contains("2")); assertFalse(_aspectMap.containsKey("A")); assertFalse(_aspectMap.containsKey("B")); assertFalse(_aspectMap.containsKey("_")); assertEquals(3, _listener.beforeRemoveEvents.size()); TestHelper.eventListContains(new DefaultMapEntry<>("A", "1"), _listener.beforeRemoveEvents); TestHelper.eventListContains(new DefaultMapEntry<>("_", "1"), _listener.beforeRemoveEvents); TestHelper.eventListContains(new DefaultMapEntry<>("B", "2"), _listener.beforeRemoveEvents); assertEquals(3, _listener.afterRemoveEvents.size()); TestHelper.eventListContains(new DefaultMapEntry<>("A", "1"), _listener.afterRemoveEvents); TestHelper.eventListContains(new DefaultMapEntry<>("_", "1"), _listener.afterRemoveEvents); TestHelper.eventListContains(new DefaultMapEntry<>("B", "2"), _listener.afterRemoveEvents); } /** * Test of removeAll method, of class AspectMapValueCollection. */ @Test public void testRemoveAll_veto() { _listener.vetoRemove = true; assertFalse(_values.removeAll(Arrays.asList("5", "6"))); assertTrue(_listener.beforeRemoveEvents.isEmpty()); assertTrue(_listener.afterRemoveEvents.isEmpty()); try { assertTrue(_values.removeAll(Arrays.asList("1", "2"))); fail("Remove veto not raised"); } catch (AssertionError ex) { /* ignore */ } assertTrue(_listener.beforeRemoveEvents.isEmpty()); assertTrue(_listener.afterRemoveEvents.isEmpty()); assertTrue(_values.contains("1")); assertTrue(_values.contains("2")); assertTrue(_aspectMap.containsKey("A")); assertTrue(_aspectMap.containsKey("B")); } /** * Test of retainAll method, of class AspectMapValueCollection. */ @Test public void testRetainAll() { assertFalse(_values.retainAll(Arrays.asList("1", "2", "3", "4"))); assertTrue(_listener.beforeRemoveEvents.isEmpty()); assertTrue(_listener.afterRemoveEvents.isEmpty()); _baseMap.put("_", "1"); assertTrue(_values.retainAll(Arrays.asList("2", "3", "4"))); assertFalse(_values.contains("1")); assertTrue(_values.contains("2")); assertTrue(_values.contains("3")); assertTrue(_values.contains("4")); assertEquals(2, _listener.beforeRemoveEvents.size()); assertTrue(TestHelper.eventListContains(new DefaultMapEntry<>("A", "1"), _listener.beforeRemoveEvents)); assertTrue(TestHelper.eventListContains(new DefaultMapEntry<>("_", "1"), _listener.beforeRemoveEvents)); assertEquals(2, _listener.afterRemoveEvents.size()); assertTrue(TestHelper.eventListContains(new DefaultMapEntry<>("A", "1"), _listener.afterRemoveEvents)); assertTrue(TestHelper.eventListContains(new DefaultMapEntry<>("_", "1"), _listener.afterRemoveEvents)); } /** * Test of retainAll method, of class AspectMapValueCollection. */ @Test public void testRetainAll_veto() { _listener.vetoRemove = true; assertFalse(_values.retainAll(Arrays.asList("1", "2", "3", "4"))); assertTrue(_listener.beforeRemoveEvents.isEmpty()); assertTrue(_listener.afterRemoveEvents.isEmpty()); _baseMap.put("_", "1"); try { assertTrue(_values.retainAll(Arrays.asList("2", "3", "4"))); fail("Remove veto not raised"); } catch (AssertionError ex) { /* ignore */ } assertTrue(_values.contains("1")); assertTrue(_values.contains("2")); assertTrue(_values.contains("3")); assertTrue(_values.contains("4")); assertTrue(_listener.beforeRemoveEvents.isEmpty()); assertTrue(_listener.afterRemoveEvents.isEmpty()); } /** * Test of clear method, of class AspectMapValueCollection. */ @Test public void testClear() { assertFalse(_aspectMap.isEmpty()); assertFalse(_values.isEmpty()); _values.clear(); assertTrue(_aspectMap.isEmpty()); assertTrue(_values.isEmpty()); assertEquals(1, _listener.beforeClearEvents.size()); assertEquals(1, _listener.afterClearEvents.size()); /* second clear does nothing */ _values.clear(); assertEquals(1, _listener.beforeClearEvents.size()); assertEquals(1, _listener.afterClearEvents.size()); } /** * Test of clear method, of class AspectMapValueCollection. */ @Test public void testClear_veto() { _listener.vetoClear = true; assertFalse(_aspectMap.isEmpty()); assertFalse(_values.isEmpty()); try { _values.clear(); fail("Clear veto not raised"); } catch (AssertionError ex) { /* ignore */ } assertFalse(_aspectMap.isEmpty()); assertFalse(_values.isEmpty()); _baseMap.clear(); /* second clear does nothing */ _values.clear(); assertTrue(_listener.beforeClearEvents.isEmpty()); assertTrue(_listener.afterClearEvents.isEmpty()); } }