abstracttestmap.java

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        resetFull();
        values = map.values();
        assertTrue(map.size() > 0);
        assertTrue(values.size() > 0);
        map.clear();
        assertTrue(map.size() == 0);
        assertTrue(values.size() == 0);
    }
    
    /**
     * Tests that the {@link Map#keySet} collection is backed by
     * the underlying map for clear().
     */
    public void testKeySetClearChangesMap() {
        if (!isRemoveSupported()) return;
        
        // clear values, reflected in map
        resetFull();
        Set keySet = map.keySet();
        assertTrue(map.size() > 0);
        assertTrue(keySet.size() > 0);
        keySet.clear();
        assertTrue(map.size() == 0);
        assertTrue(keySet.size() == 0);
        
        // clear map, reflected in values
        resetFull();
        keySet = map.keySet();
        assertTrue(map.size() > 0);
        assertTrue(keySet.size() > 0);
        map.clear();
        assertTrue(map.size() == 0);
        assertTrue(keySet.size() == 0);
    }
    
    /**
     * Tests that the {@link Map#entrySet()} collection is backed by
     * the underlying map for clear().
     */
    public void testEntrySetClearChangesMap() {
        if (!isRemoveSupported()) return;
        
        // clear values, reflected in map
        resetFull();
        Set entrySet = map.entrySet();
        assertTrue(map.size() > 0);
        assertTrue(entrySet.size() > 0);
        entrySet.clear();
        assertTrue(map.size() == 0);
        assertTrue(entrySet.size() == 0);
        
        // clear map, reflected in values
        resetFull();
        entrySet = map.entrySet();
        assertTrue(map.size() > 0);
        assertTrue(entrySet.size() > 0);
        map.clear();
        assertTrue(map.size() == 0);
        assertTrue(entrySet.size() == 0);
    }

    //-----------------------------------------------------------------------    
    public void testEntrySetContains1() {
        resetFull();
        Set entrySet = map.entrySet();
        Map.Entry entry = (Map.Entry) entrySet.iterator().next();
        assertEquals(true, entrySet.contains(entry));
    }
    public void testEntrySetContains2() {
        resetFull();
        Set entrySet = map.entrySet();
        Map.Entry entry = (Map.Entry) entrySet.iterator().next();
        Map.Entry test = cloneMapEntry(entry);
        assertEquals(true, entrySet.contains(test));
    }
    public void testEntrySetContains3() {
        resetFull();
        Set entrySet = map.entrySet();
        Map.Entry entry = (Map.Entry) entrySet.iterator().next();
        HashMap temp = new HashMap();
        temp.put(entry.getKey(), "A VERY DIFFERENT VALUE");
        Map.Entry test = (Map.Entry) temp.entrySet().iterator().next();
        assertEquals(false, entrySet.contains(test));
    }
    
    public void testEntrySetRemove1() {
        if (!isRemoveSupported()) return;
        resetFull();
        int size = map.size();
        Set entrySet = map.entrySet();
        Map.Entry entry = (Map.Entry) entrySet.iterator().next();
        Object key = entry.getKey();
        
        assertEquals(true, entrySet.remove(entry));
        assertEquals(false, map.containsKey(key));
        assertEquals(size - 1, map.size());
    }            
    public void testEntrySetRemove2() {
        if (!isRemoveSupported()) return;
        resetFull();
        int size = map.size();
        Set entrySet = map.entrySet();
        Map.Entry entry = (Map.Entry) entrySet.iterator().next();
        Object key = entry.getKey();
        Map.Entry test = cloneMapEntry(entry);
        
        assertEquals(true, entrySet.remove(test));
        assertEquals(false, map.containsKey(key));
        assertEquals(size - 1, map.size());
    }
    public void testEntrySetRemove3() {
        if (!isRemoveSupported()) return;
        resetFull();
        int size = map.size();
        Set entrySet = map.entrySet();
        Map.Entry entry = (Map.Entry) entrySet.iterator().next();
        Object key = entry.getKey();
        HashMap temp = new HashMap();
        temp.put(entry.getKey(), "A VERY DIFFERENT VALUE");
        Map.Entry test = (Map.Entry) temp.entrySet().iterator().next();
        
        assertEquals(false, entrySet.remove(test));
        assertEquals(true, map.containsKey(key));
        assertEquals(size, map.size());
    }
    
    //-----------------------------------------------------------------------
    /**
     * Tests that the {@link Map#values} collection is backed by
     * the underlying map by removing from the values collection
     * and testing if the value was removed from the map.
     * <p>
     * We should really test the "vice versa" case--that values removed
     * from the map are removed from the values collection--also,
     * but that's a more difficult test to construct (lacking a
     * "removeValue" method.)
     * </p>
     * <p>
     * See bug <a href="http://issues.apache.org/bugzilla/show_bug.cgi?id=9573">
     * 9573</a>.
     * </p>
     */
    public void testValuesRemoveChangesMap() {
        resetFull();
        Object[] sampleValues = getSampleValues();
        Collection values = map.values();
        for (int i = 0; i < sampleValues.length; i++) {
            if (map.containsValue(sampleValues[i])) {
                int j = 0;  // loop counter prevents infinite loops when remove is broken
                while (values.contains(sampleValues[i]) && j < 10000) {
                    try {
                        values.remove(sampleValues[i]);
                    } catch (UnsupportedOperationException e) {
                        // if values.remove is unsupported, just skip this test
                        return;
                    }
                    j++;
                }
                assertTrue("values().remove(obj) is broken", j < 10000);
                assertTrue(
                    "Value should have been removed from the underlying map.",
                    !map.containsValue(sampleValues[i]));
            }
        }
    }

    /**
     * Tests that the {@link Map#keySet} set is backed by
     * the underlying map by removing from the keySet set
     * and testing if the key was removed from the map.
     */
    public void testKeySetRemoveChangesMap() {
        resetFull();
        Object[] sampleKeys = getSampleKeys();
        Set keys = map.keySet();
        for (int i = 0; i < sampleKeys.length; i++) {
            try {
                keys.remove(sampleKeys[i]);
            } catch (UnsupportedOperationException e) {
                // if key.remove is unsupported, just skip this test
                return;
            }
            assertTrue(
                "Key should have been removed from the underlying map.",
                !map.containsKey(sampleKeys[i]));
        }
    }

    // TODO: Need:
    //    testValuesRemovedFromEntrySetAreRemovedFromMap
    //    same for EntrySet/KeySet/values's
    //      Iterator.remove, removeAll, retainAll


    /**
     * Utility methods to create an array of Map.Entry objects
     * out of the given key and value arrays.<P>
     *
     * @param keys    the array of keys
     * @param values  the array of values
     * @return an array of Map.Entry of those keys to those values
     */
    private Map.Entry[] makeEntryArray(Object[] keys, Object[] values) {
        Map.Entry[] result = new Map.Entry[keys.length];
        for (int i = 0; i < keys.length; i++) {
            Map map = makeConfirmedMap();
            map.put(keys[i], values[i]);
            result[i] = (Map.Entry) map.entrySet().iterator().next();
        }
        return result;
    }


    /**
     * Bulk test {@link Map#entrySet()}.  This method runs through all of
     * the tests in {@link AbstractTestSet}.
     * After modification operations, {@link #verify()} is invoked to ensure
     * that the map and the other collection views are still valid.
     *
     * @return a {@link AbstractTestSet} instance for testing the map's entry set
     */
    public BulkTest bulkTestMapEntrySet() {
        return new TestMapEntrySet();
    }

    public class TestMapEntrySet extends AbstractTestSet {
        public TestMapEntrySet() {
            super("MapEntrySet");
        }

        // Have to implement manually; entrySet doesn't support addAll
        public Object[] getFullElements() {
            Object[] k = getSampleKeys();
            Object[] v = getSampleValues();
            return makeEntryArray(k, v);
        }
        
        // Have to implement manually; entrySet doesn't support addAll
        public Object[] getOtherElements() {
            Object[] k = getOtherKeys();
            Object[] v = getOtherValues();
            return makeEntryArray(k, v);
        }
        
        public Set makeEmptySet() {
            return makeEmptyMap().entrySet();
        }
        
        public Set makeFullSet() {
            return makeFullMap().entrySet();
        }
        
        public boolean isAddSupported() {
            // Collection views don't support add operations.
            return false;
        }
        public boolean isRemoveSupported() {
            // Entry set should only support remove if map does
            return AbstractTestMap.this.isRemoveSupported();
        }
        public boolean isGetStructuralModify() {
            return AbstractTestMap.this.isGetStructuralModify();
        }
        public boolean isTestSerialization() {
            return false;
        }

        public void resetFull() {
            AbstractTestMap.this.resetFull();
            collection = map.entrySet();
            TestMapEntrySet.this.confirmed = AbstractTestMap.this.confirmed.entrySet();
        }
        
        public void resetEmpty() {
            AbstractTestMap.this.resetEmpty();
            collection = map.entrySet();
            TestMapEntrySet.this.confirmed = AbstractTestMap.this.confirmed.entrySet();
        }
        
        public void testMapEntrySetIteratorEntry() {
            resetFull();
            Iterator it = collection.iterator();
            int count = 0;
            while (it.hasNext()) {
                Map.Entry entry = (Map.Entry) it.next();
                assertEquals(true, AbstractTestMap.this.map.containsKey(entry.getKey()));
                assertEquals(true, AbstractTestMap.this.map.containsValue(entry.getValue()));
                if (isGetStructuralModify() == false) {
                    assertEquals(AbstractTestMap.this.map.get(entry.getKey()), entry.getValue());
                }
                count++;
            }
            assertEquals(collection.size(), count);
        }

        public void testMapEntrySetIteratorEntrySetValue() {
            Object key1 = getSampleKeys()[0];
            Object key2 = (getSampleKeys().length ==1 ? getSampleKeys()[0] : getSampleKeys()[1]);
            Object newValue1 = getNewSampleValues()[0];
            Object newValue2 = (getNewSampleValues().length ==1 ? getNewSampleValues()[0] : getNewSampleValues()[1]);
            
            resetFull();
            // explicitly get entries as sample values/keys are connected for some maps
            // such as BeanMap
            Iterator it = TestMapEntrySet.this.collection.iterator();
            Map.Entry entry1 = getEntry(it, key1);
            it = TestMapEntrySet.this.collection.iterator();
            Map.Entry entry2 = getEntry(it, key2);
            Iterator itConfirmed = TestMapEntrySet.this.confirmed.iterator();
            Map.Entry entryConfirmed1 = getEntry(itConfirmed, key1);
            itConfirmed = TestMapEntrySet.this.confirmed.iterator();
            Map.Entry entryConfirmed2 = getEntry(itConfirmed, key2);
            verify();
            
            if (isSetValueSupported() == false) {
                try {
                    entry1.setValue(newValue1);
                } catch (UnsupportedOperationException ex) {
                }
                return;
            }
            
            entry1.setValue(newValue1);
            entryConfirmed1.setValue(newValue1);
            assertEquals(newValue1, entry1.getValue());
            assertEquals(true, AbstractTestMap.this.map.containsKey(entry1.getKey()));
            assertEquals(true, AbstractTestMap.this.map.containsValue(newValue1));
            assertEquals(newValue1, AbstractTestMap.this.map.get(entry1.getKey()));
            verify();
            
            entry1.setValue(newValue1);
            entryConfirmed1.setValue(newValue1);
            assertEquals(newValue1, entry1.getValue());
            assertEquals(true, AbstractTestMap.this.map.containsKey(entry1.getKey()));
            assertEquals(true, AbstractTestMap.this.map.containsValue(newValue1));
            assertEquals(newValue1, AbstractTestMap.this.map.get(entry1.getKey()));
            verify();
            
            entry2.setValue(newValue2);
            entryConfirmed2.setValue(newValue2);