Examples of java.util.Map.containsValue()

java.util.Map.containsValue()
Returns true if this map maps one or more keys to the specified value. More formally, returns true if and only if this map contains at least one mapping to a value v such that (value==null ? v==null : value.equals(v)). This operation will probably require time linear in the map size for most implementations of the Map interface. @param value value whose presence in this map is to be tested @return true if this map maps one or more keys to thespecified value @throws ClassCastException if the value is of an inappropriate type forthis map (optional) @throws NullPointerException if the specified value is null and thismap does not permit null values (optional)

        } catch (IllegalArgumentException e) {
            // expected
        }


        assertTrue(!map.containsKey(new Integer(3)));
        assertTrue(!map.containsValue(new Integer(3)));


        Map map2 = new HashMap();
        map2.put("A", "a");
        map2.put("B", "b");
        map2.put("C", "c");

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            assertEquals(true, map.containsKey(new Integer((String) els[i])));
            try {
                map.containsKey(els[i]);
                fail();
            } catch (ClassCastException ex) {}
            assertEquals(true, map.containsValue(els[i]));
            assertEquals(els[i], map.get(new Integer((String) els[i])));
        }
        
        try {
            map.remove(els[0]);

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        map = TransformedSortedMap.decorate(new TreeMap(), null, TestTransformedCollection.STRING_TO_INTEGER_TRANSFORMER);
        assertEquals(0, map.size());
        for (int i = 0; i < els.length; i++) {
            map.put(els[i], els[i]);
            assertEquals(i + 1, map.size());
            assertEquals(true, map.containsValue(new Integer((String) els[i])));
            assertEquals(false, map.containsValue(els[i]));
            assertEquals(true, map.containsKey(els[i]));
            assertEquals(new Integer((String) els[i]), map.get(els[i]));
        }

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        assertEquals(0, map.size());
        for (int i = 0; i < els.length; i++) {
            map.put(els[i], els[i]);
            assertEquals(i + 1, map.size());
            assertEquals(true, map.containsValue(new Integer((String) els[i])));
            assertEquals(false, map.containsValue(els[i]));
            assertEquals(true, map.containsKey(els[i]));
            assertEquals(new Integer((String) els[i]), map.get(els[i]));
        }


        assertEquals(new Integer((String) els[0]), map.remove(els[0]));

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        for (int i = 0; i < els.length; i++) {
            map.put(els[i], els[i]);
            assertEquals(i + 1, map.size());
            assertEquals(true, map.containsKey(new Integer((String) els[i])));
            assertEquals(false, map.containsKey(els[i]));
            assertEquals(true, map.containsValue(els[i]));
            assertEquals(els[i], map.get(new Integer((String) els[i])));
        }
        
        assertEquals(null, map.remove(els[0]));
        assertEquals(els[0], map.remove(new Integer((String) els[0])));

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        map = TransformedMap.decorate(new HashMap(), null, TestTransformedCollection.STRING_TO_INTEGER_TRANSFORMER);
        assertEquals(0, map.size());
        for (int i = 0; i < els.length; i++) {
            map.put(els[i], els[i]);
            assertEquals(i + 1, map.size());
            assertEquals(true, map.containsValue(new Integer((String) els[i])));
            assertEquals(false, map.containsValue(els[i]));
            assertEquals(true, map.containsKey(els[i]));
            assertEquals(new Integer((String) els[i]), map.get(els[i]));
        }

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        assertEquals(0, map.size());
        for (int i = 0; i < els.length; i++) {
            map.put(els[i], els[i]);
            assertEquals(i + 1, map.size());
            assertEquals(true, map.containsValue(new Integer((String) els[i])));
            assertEquals(false, map.containsValue(els[i]));
            assertEquals(true, map.containsKey(els[i]));
            assertEquals(new Integer((String) els[i]), map.get(els[i]));
        }


        assertEquals(new Integer((String) els[0]), map.remove(els[0]));

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        refs = callbackCache();
        Pointer cbstruct = ref.cbstruct;
        
        cb = null;
        System.gc();
        for (int i = 0; i < 100 && (ref.get() != null || refs.containsValue(ref)); ++i) {
            try {
                Thread.sleep(10); // Give the GC a chance to run
                System.gc();
            } finally {}
        }

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                Thread.sleep(10); // Give the GC a chance to run
                System.gc();
            } finally {}
        }
        assertNull("Callback not GC'd", ref.get());
        assertFalse("Callback still in map", refs.containsValue(ref));
        
        ref = null;
        System.gc();
        for (int i = 0; i < 100 && (cbstruct.peer != 0 || refs.size() > 0); ++i) {
            // Flush weak hash map

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        Pointer cbstruct = ref.cbstruct;
        Pointer first_fptr = cbstruct.getPointer(0);
        
        cb = null;
        System.gc();
        for (int i = 0; i < 100 && (ref.get() != null || refs.containsValue(ref)); ++i) {
            Thread.sleep(10); // Give the GC a chance to run
            System.gc();
        }
        assertNull("Callback not GC'd", ref.get());
        assertFalse("Callback still in map", refs.containsValue(ref));

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