Examples of net.csdn.common.collections.WowCollections$MapIterator

org.apache.commons.collections15.MapIterator
BlogInfo: WilliamZhu Date: 12-5-17 Time: 下午3:27

        wow = (settings.get("application.helper", "") + "." + wow + "." + getControllerNameWithoutSuffix() + "Helper");
        Object instance;
        try {
            instance = Class.forName(wow).newInstance();
        } catch (Exception e) {
            instance = new WowCollections();
        }
        return instance;
    }

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    public void testMapIterator() {
        assertTrue(makeEmptyMapIterator() instanceof Unmodifiable);
    }


    public void testDecorateFactory() {
        MapIterator it = makeFullMapIterator();
        assertSame(it, UnmodifiableMapIterator.decorate(it));


        it = ((BidiMap) getMap()).mapIterator();
        assertTrue(it != UnmodifiableMapIterator.decorate(it));

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        Object newValue1 = getOtherValues()[0];
        Object newValue2 = getOtherValues()[1];


        resetFull();
        BidiMap bidi = (BidiMap) map;
        MapIterator it = bidi.mapIterator();
        assertEquals(true, it.hasNext());
        Object key1 = it.next();


        if (isSetValueSupported() == false) {
            try {
                it.setValue(newValue1);
                fail();
            } catch (UnsupportedOperationException ex) {
            }
            return;
        }


        it.setValue(newValue1);
        confirmed.put(key1, newValue1);
        assertSame(key1, it.getKey());
        assertSame(newValue1, it.getValue());
        assertEquals(true, bidi.containsKey(key1));
        assertEquals(true, bidi.containsValue(newValue1));
        assertEquals(newValue1, bidi.get(key1));
        verify();


        it.setValue(newValue1);  // same value - should be OK
        confirmed.put(key1, newValue1);
        assertSame(key1, it.getKey());
        assertSame(newValue1, it.getValue());
        assertEquals(true, bidi.containsKey(key1));
        assertEquals(true, bidi.containsValue(newValue1));
        assertEquals(newValue1, bidi.get(key1));
        verify();


        Object key2 = it.next();
        it.setValue(newValue2);
        confirmed.put(key2, newValue2);
        assertSame(key2, it.getKey());
        assertSame(newValue2, it.getValue());
        assertEquals(true, bidi.containsKey(key2));
        assertEquals(true, bidi.containsValue(newValue2));
        assertEquals(newValue2, bidi.get(key2));
        verify();
        
        // at this point
        // key1=newValue1, key2=newValue2
        try {
            it.setValue(newValue1);  // should remove key1
            fail();
        } catch (IllegalArgumentException ex) {
            return;  // simplest way of dealing with tricky situation
        }
        confirmed.put(key2, newValue1);
        AbstractTestBidiMap.this.confirmed.remove(key1);
        assertEquals(newValue1, it.getValue());
        assertEquals(true, bidi.containsKey(it.getKey()));
        assertEquals(true, bidi.containsValue(newValue1));
        assertEquals(newValue1, bidi.get(it.getKey()));
        assertEquals(false, bidi.containsKey(key1));
        assertEquals(false, bidi.containsValue(newValue2));
        verify();
            
        // check for ConcurrentModification
        it.next();  // if you fail here, maybe you should be throwing an IAE, see above
        if (isRemoveSupported()) {
            it.remove();
        }
    }

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    public void testEmptyMapIterator() {
        if (supportsEmptyIterator() == false) {
            return;
        }


        MapIterator it = makeEmptyMapIterator();
        Map map = getMap();
        assertEquals(false, it.hasNext());
        
        // next() should throw a NoSuchElementException
        try {
            it.next();
            fail();
        } catch (NoSuchElementException ex) {
        }
        
        // getKey() should throw an IllegalStateException
        try {
            it.getKey();
            fail();
        } catch (IllegalStateException ex) {
        }
        
        // getValue() should throw an IllegalStateException
        try {
            it.getValue();
            fail();
        } catch (IllegalStateException ex) {
        }


        if (supportsSetValue() == false) {
            // setValue() should throw an UnsupportedOperationException/IllegalStateException
            try {
                it.setValue(addSetValues()[0]);
                fail();
            } catch (UnsupportedOperationException ex) {
            } catch (IllegalStateException ex) {
            }
        } else {
            // setValue() should throw an IllegalStateException
            try {
                it.setValue(addSetValues()[0]);
                fail();
            } catch (IllegalStateException ex) {
            }
        }
    }

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    public void testFullMapIterator() {
        if (supportsFullIterator() == false) {
            return;
        }


        MapIterator it = makeFullMapIterator();
        Map map = getMap();
        assertEquals(true, it.hasNext());


        assertEquals(true, it.hasNext());
        Set set = new HashSet();
        while (it.hasNext()) {
            // getKey
            Object key = it.next();
            assertSame("it.next() should equals getKey()", key, it.getKey());
            assertTrue("Key must be in map", map.containsKey(key));
            assertTrue("Key must be unique", set.add(key));
            
            // getValue
            Object value = it.getValue();
            if (isGetStructuralModify() == false) {
                assertSame("Value must be mapped to key", map.get(key), value);
            }
            assertTrue("Value must be in map", map.containsValue(value));

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            return;
        }


        Object newValue = addSetValues()[0];
        Object newValue2 = (addSetValues().length == 1 ? addSetValues()[0] : addSetValues()[1]);
        MapIterator it = makeFullMapIterator();
        Map map = getMap();
        Map confirmed = getConfirmedMap();
        assertEquals(true, it.hasNext());
        Object key = it.next();
        Object value = it.getValue();


        if (supportsSetValue() == false) {
            try {
                it.setValue(newValue);
                fail();
            } catch (UnsupportedOperationException ex) {
            }
            return;
        }
        Object old = it.setValue(newValue);
        confirmed.put(key, newValue);
        assertSame("Key must not change after setValue", key, it.getKey());
        assertSame("Value must be changed after setValue", newValue, it.getValue());
        assertSame("setValue must return old value", value, old);
        assertEquals("Map must contain key", true, map.containsKey(key));
        // test against confirmed, as map may contain value twice
        assertEquals("Map must not contain old value", confirmed.containsValue(old), map.containsValue(old));
        assertEquals("Map must contain new value", true, map.containsValue(newValue));
        verify();


        it.setValue(newValue);  // same value - should be OK
        confirmed.put(key, newValue);
        assertSame("Key must not change after setValue", key, it.getKey());
        assertSame("Value must be changed after setValue", newValue, it.getValue());
        verify();


        it.setValue(newValue2);  // new value
        confirmed.put(key, newValue2);
        assertSame("Key must not change after setValue", key, it.getKey());
        assertSame("Value must be changed after setValue", newValue2, it.getValue());
        verify();
    }

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        verify();
    }


    //-----------------------------------------------------------------------
    public void testRemove() { // override
        MapIterator it = makeFullMapIterator();
        Map map = getMap();
        Map confirmed = getConfirmedMap();
        assertEquals(true, it.hasNext());
        Object key = it.next();


        if (supportsRemove() == false) {
            try {
                it.remove();
                fail();
            } catch (UnsupportedOperationException ex) {
            }
            return;
        }


        it.remove();
        confirmed.remove(key);
        assertEquals(false, map.containsKey(key));
        verify();


        try {
            it.remove();  // second remove fails
        } catch (IllegalStateException ex) {
        }
        verify();
    }

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    public void testMapIteratorSetRemoveSet() {
        if (supportsSetValue() == false || supportsRemove() == false) {
            return;
        }
        Object newValue = addSetValues()[0];
        MapIterator it = makeFullMapIterator();
        Map map = getMap();
        Map confirmed = getConfirmedMap();


        assertEquals(true, it.hasNext());
        Object key = it.next();


        it.setValue(newValue);
        it.remove();
        confirmed.remove(key);
        verify();


        try {
            it.setValue(newValue);
            fail();
        } catch (IllegalStateException ex) {
        }
        verify();
    }

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    //-----------------------------------------------------------------------
    public void testMapIteratorRemoveGetKey() {
        if (supportsRemove() == false) {
            return;
        }
        MapIterator it = makeFullMapIterator();
        Map map = getMap();
        Map confirmed = getConfirmedMap();


        assertEquals(true, it.hasNext());
        Object key = it.next();


        it.remove();
        confirmed.remove(key);
        verify();


        try {
            it.getKey();
            fail();
        } catch (IllegalStateException ex) {
        }
        verify();
    }

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    //-----------------------------------------------------------------------
    public void testMapIteratorRemoveGetValue() {
        if (supportsRemove() == false) {
            return;
        }
        MapIterator it = makeFullMapIterator();
        Map map = getMap();
        Map confirmed = getConfirmedMap();


        assertEquals(true, it.hasNext());
        Object key = it.next();


        it.remove();
        confirmed.remove(key);
        verify();


        try {
            it.getValue();
            fail();
        } catch (IllegalStateException ex) {
        }
        verify();
    }

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