Examples of gnu.trove.set.TIntSet.retainAll()

gnu.trove.set.TIntSet.retainAll()
Removes any values in the set which are not contained in collection. @param collection a Collection value @return true if the set was modified by the retain all operation


        Collection<Integer> test_collection = new HashSet<Integer>();
        for ( int i = 0; i < element_count; i++ ) {
            test_collection.add( keys[i] );
        }
        keyset.retainAll( test_collection );
        assertFalse( keyset.isEmpty() );
        assertFalse( map.isEmpty() );


        // Reset map
        for ( int i = 0; i < element_count; i++ ) {

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            map.put( keys[i], vals[i] );
        }
        assertEquals( element_count, map.size() );


        test_collection.remove( Integer.valueOf( keys[5] ) );
        keyset.retainAll( test_collection );
        assertEquals( element_count - 1, keyset.size() );
        assertEquals( element_count - 1, map.size() );
        assertFalse( keyset.contains( keys[5] ) );
        assertFalse( map.containsKey( keys[5] ) );

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            map.put( keys[i], vals[i] );
        }
        assertEquals( element_count, map.size() );


        test_collection.add( Integer.valueOf( 1138 ) );
        keyset.retainAll( test_collection );
        
    }




    public void testKeySetRetainAllTCollection() {

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            assertTrue( keyset.contains( keys[i] ) );
        }
        assertFalse( keyset.isEmpty() );


        assertFalse( "keyset: " + keyset + ", should be unmodified.",
                keyset.retainAll( keyset ) );


        TIntCollection other = new TIntArrayList( keyset );
        assertFalse( "keyset: " + keyset + ", should be unmodified. other: " +
                     other, keyset.retainAll( other ) );

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        assertFalse( "keyset: " + keyset + ", should be unmodified.",
                keyset.retainAll( keyset ) );


        TIntCollection other = new TIntArrayList( keyset );
        assertFalse( "keyset: " + keyset + ", should be unmodified. other: " +
                     other, keyset.retainAll( other ) );


        other.remove( keys[5] );
        assertTrue( "keyset: " + keyset + ", should be modified. other: " +
                    other, keyset.retainAll( other ) );
        assertFalse( keyset.contains( keys[5] ) );

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        assertFalse( "keyset: " + keyset + ", should be unmodified. other: " +
                     other, keyset.retainAll( other ) );


        other.remove( keys[5] );
        assertTrue( "keyset: " + keyset + ", should be modified. other: " +
                    other, keyset.retainAll( other ) );
        assertFalse( keyset.contains( keys[5] ) );
        assertFalse( map.containsKey( keys[5] ) );
        assertFalse( map.containsValue( vals[5] ) );
        assertTrue( "keyset: " + keyset + ", should contain all in other: " +
                    other, keyset.containsAll( other ) );

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            assertTrue( keyset.contains( keys[i] ) );
        }
        assertFalse( keyset.isEmpty() );


        assertFalse( "keyset: " + keyset + ", should be unmodified. array: " +
                     Arrays.toString( keys ), keyset.retainAll( keys ) );


        int[] other = new int[element_count - 1];
        for ( int i = 0; i < element_count; i++ ) {
            if ( i < 5 ) {
                other[i] = i + 1;

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            if ( i > 5 ) {
                other[i - 1] = i + 1;
            }
        }
        assertTrue( "keyset: " + keyset + ", should be modified. array: " +
                    Arrays.toString( other ), keyset.retainAll( other ) );
    }




    public void testKeySetRemoveAllCollection() {
        int element_count = 20;

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        // test with a java.util.Map
        Set<Number> java_set = new HashSet<Number>();
        for ( int i = 0; i < keys.length; i++ ) {
            java_set.add( Integer.valueOf( keys[i] ) );
        }
        assertFalse( set.retainAll( java_set ) );
        assertEquals( keys.length, set.size() );
        assertEquals( keys.length, map.size() );
        for ( int i = 0; i < keys.length; i++ ) {
            assertTrue( set.contains( keys[i] ) );
            assertTrue( map.containsKey( keys[i] ) );

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            assertTrue( set.contains( keys[i] ) );
            assertTrue( map.containsKey( keys[i] ) );
        }
        java_set.remove( 42 );
        assertTrue( "set should have been modified: " + set + ", java: " + java_set,
                set.retainAll( java_set ) );
        assertEquals( keys.length - 1, set.size() );
        assertEquals( keys.length - 1, map.size() );
        for ( int i = 0; i < keys.length; i++ ) {
            if ( keys[i] != 42 ) {
                assertTrue( set.contains( keys[i] ) );

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